36 results about "Pennisetum" patented technology

The invention discloses a high-yield cold-resistant pennisetum germplasm screening method and application thereof, and the method is based on 10 yield traits, 4 cold-resistant indexes and 4 low-temperature photosynthetic ability indexes of pennisetum, constructs a multi-dimensional dynamic monitoring system across autumn, winter and spring, and performs high-yield cold-resistant comprehensive evaluation on the pennisetum germplasm, thereby screening out a high-yield cold-resistant breeding material. The invention provides a comprehensive, efficient and accurate high-yield cold-resistant Chinese pennisetum germplasm screening method, through a multi-dimensional dynamic monitoring system crossing autumn, winter and spring, yield traits, cold resistance indexes and low-temperature photosynthetic ability indexes are integrated, and the problems that a traditional method is single in evaluation dimension, disjointed with field reality and insufficient in dynamic adaptability are solved. The comprehensive evaluation system based on the principal component quantitative model not only fills the blank of the high-yield and cold-resistant evaluation model of the pennisetum alopecuroides, but also remarkably improves the breeding efficiency, provides powerful support for cultivating cold-resistant and yield-reduction-free breakthrough varieties, and has important application value and popularization prospect.

The utility model relates to a carex meyeriana composite fabric forming mechanism and bonding and reinforcing device, including fabric processing machine main part, bonding and reinforcing component, support plate and fabric forming component, the fabric processing machine main part is equipped with bonding and reinforcing component, the inner wall of two sides of fabric processing machine main part is fixedly connected with the support plate, the fabric forming component is equipped with the bonding and reinforcing component, and the bonding and reinforcing component is equipped with the bonding and reinforcing component. A fabric forming assembly is mounted on the supporting plate and the fabric processing machine main body; the bonding and reinforcing assembly comprises an adhesive pipe, a discharging hole, a supporting frame, a first motor, a sealing baffle disc and a sealing rotating wheel; according to the utility model, the bonding and reinforcing assembly is adopted, the spinning layer can be automatically glued, and the glued spinning layer is bonded and reinforced, so that manual assistance is reduced, and the bonding and reinforcing effect of the fabric is improved; and the fabric forming assembly is adopted, during heating forming, the edge of the fabric can be cut, manual auxiliary cutting is not needed, the cutting burden is reduced, and the fabric cutting effect is improved.

The invention discloses an application of a pennisetum whole genome InDel molecular marker in variety identification. According to the invention, firstly, 108 new InDel markers are screened, and the markers can be used for intraspecific identification of four cultispecies of pennisetum alopecuroides, Yu valley, pennisetum purpureum and hybrid pennisetum alopecuroides, and can also be used for interspecific identification, so that the specific species category of a to-be-detected sample can be clearly identified; and the method has a wide application prospect in the aspects of variety identification, variety right dispute judgment, auxiliary market dispute and the like.

The application provides a method for identifying and screening cold tolerance of elephant grass and application thereof, and relates to the field of plant cultivation. The method mainly comprises the following steps: subjecting the standard elephant grass stem segments to variable temperature germination; subjecting the standard elephant grass stem segments to constant temperature low temperature stress; subjecting the stressed stem segments to recovery culture under suitable conditions; determining and calculating the low temperature germination, stress survival rate and recovery growth rate of the stem segments; and comprehensively evaluating the cold tolerance of the stem segments based on the weighted values of the three. The application overcomes the shortcomings of the prior art, can simulate the key low temperature stress and recovery process in the laboratory, and can realize rapid, reliable and batch preliminary identification and screening of the cold tolerance of a large amount of materials, so that the blind dependence on large-scale and long-period field identification is significantly reduced, the screening accuracy and breeding efficiency are effectively improved, and the breeding period is shortened.

The application relates to SRAP molecular marker primers for genetic diversity analysis of pasture of the Puccinellia genus and a genetic diversity analysis method thereof; the SRAP molecular marker primers are composed of the following eight pairs of primers: ME1-EM5, ME2-EM3, ME3-EM5, ME4-EM3, ME5-EM2, ME6-EM7, ME7-EM2 and ME8-EM2. The eight pairs of SRAP molecular marker primers screened by the application have the advantages of rich amplification bands, rich polymorphism, large brightness and good repeatability, and can be used for genetic diversity analysis of the Puccinellia genus pasture varieties.

The application discloses a sub-genome-specific retrotransposon of elephant grass and application thereof, and belongs to the field of bioinformatics and molecular cytogenetics. The application mainly comprises the following steps: 2 sub-genome-specific retrotransposon sequences are screened out through bioinformatics analysis of short fragment sequences of the sub-genome of elephant grass; primers are designed according to the sequences, and the genomic DNA of elephant grass is used as a template to amplify the primers through PCR, and the target fragments are recovered through purification of PCR products; and it is verified that the 2 retrotransposon sequences produce clear and bright signals on the respective 14 chromosomes of elephant grass through probe labeling, chromosome sheet preparation and fluorescence in situ hybridization. The retrotransposon sequences can be directly used for specific identification of the sub-genome of elephant grass, more accurate information is provided for identification of the sub-genome of elephant grass, and a foundation is laid for chromosome engineering breeding of elephant grass.

This invention belongs to the field of silage machinery and equipment, specifically relating to an adjustable feeding and chopping device and its control method for a hybrid Napier grass harvester. The feeding and chopping device includes a shell, conveying components, a gathering component, a pre-compression component, a feeding component, and a chopping component; the pre-compression component includes an upper pressure roller, a slider, a pin, a limit slot, a front slide rail, a rear slide rail, and a pressure sensor. This device can automatically adjust the forage gathering range, feeding speed, and chopping speed according to the amount of crop fed. It can pre-compress loose stalks in advance to improve the chopping effect. It can also reasonably adjust the power input according to the feeding amount to reduce energy loss, further improving the quality and efficiency of silage chopping. The front top cover and pre-compression component enable the device to quickly clear blockages, reducing problems caused by material blockage.

The invention relates to a carbon reduction and decarbonization method and system for a coal-fired power plant. The carbon reduction and decarburization method for the coal-fired power plant comprises the following steps: S1, ammonia-process carbon capture: capturing carbon dioxide in flue gas by using ammonia water through a decarburization tower to generate an ammonium bicarbonate solution; s2, carbon sequestration of the pennisetum sinese, diluting the solution, using the diluted solution as a liquid nitrogen fertilizer for growth of the pennisetum sinese, using carbon dioxide in tail gas of a decarburization tower as a gas fertilizer through an automatic industrial planting system, and using a byproduct in a carbon capture process as a nitrogen fertilizer; and S3, biomass blending combustion is conducted, the mature pennisetum sinese is naturally aired and dried through boiler waste heat to be prepared into biomass fuel, and the biomass fuel replaces part of fire coal to be put into a power plant boiler for biomass blending combustion power generation. According to the carbon reduction and decarburization method for the coal-fired power plant, provided by the invention, triple carbon reduction technologies of carbon dioxide capture, plant carbon sequestration and biomass energy blending combustion are integrated, so that a closed-loop deep decarburization system is formed; while the carbon capture efficiency is improved, clean energy replacement and resource utilization are realized.

The invention belongs to the technical field of comprehensive utilization of Juncao, and particularly relates to a method for preparing furfural from Juncao and comprehensively utilizing the furfural. The method comprises the following steps: firstly, carrying out catalyst impregnation pretreatment on Juncao, carrying out hydrolysis reaction by using an integrated vertical hydrolysis pot, and separating after hydrolysis to obtain a furfural aqueous solution and a blow-off material, namely furfural residue; cooking the blown material through alkaline pulping, squeezing, washing with water, and bleaching to obtain finished pulp; black liquor obtained in the material spraying and squeezing process reacts by a multi-effect evaporator to obtain lignin; therefore, production of Juncao furfural and effective separation of pulp and lignin are realized.

The invention relates to the technical field of fermented feeds, in particular to a pennisetum sinese bacterium enzyme synergistic fermented feed as well as a preparation method and application of the pennisetum sinese bacterium enzyme synergistic fermented feed. The invention discloses a pennisetum sinese bacterium enzyme synergistic fermentation method. The method comprises the following steps: S1, crushing pennisetum sinese sections, and sieving to obtain micronized pennisetum sinese; s2, mixing saccharomyces cerevisiae, bacillus coagulans, lactobacillus casei, cellulase and water to obtain a zymophyte aqueous solution; s3, mixing the zymophyte aqueous solution with the micronized pennisetum sinese, and performing solid-state fermentation to obtain the pennisetum sinese bacterium enzyme synergistic fermentation feed. According to the application, the saccharomyces cerevisiae, the bacillus coagulans, the lactobacillus casei and the cellulase are used for synergistically fermenting the pennisetum sinese, so that the dry matter degradation rate and the crude protein content of the pennisetum sinese are increased, the contents of crude fibers and tannin are reduced, and the growth performance and the immunity of pigs and poultry are improved.

The invention provides a method for planting gastrodia elata by replacing firewood with pennisetum sinese. The planting method comprises the following steps: step 1, position selection; the method comprises the following steps: selecting a land parcel with loose, breathable and water-permeable soil and a shading degree of 45% in a mountainous area with an altitude of 600-1800m, and scarifying and leveling the land parcel; step 2, fungus material preparation; harvesting the mature pennisetum sinese, pulling the mature pennisetum sinese to the field, cutting straw into 15 cm for later use, and cutting straw leaves into 7 cm for later use. Step 3, gastrodia elata planting; step 4, burying the box body; the gaps around the planting box are backfilled with soil, the soil is compacted forcibly, and the part, protruding out of the ground, of the side wall of the planting box is covered with the soil as well. And step 5, gastrodia elata harvesting. According to the invention, the adjustable planting device is used. The cover plate is lifted through a threaded structure, internal fungus materials can be fixed by moving downwards, and cover opening and ventilation gap forming are facilitated by moving upwards. The method utilizes the pennisetum sinese to completely replace wood, and is environment-friendly and efficient.

The utility model relates to the field of miscanthus transferring equipment, and provides a miscanthus transplanting and transferring box which comprises a box body and a plurality of transplanting discs stacked in the box body, each transplanting disc comprises a water retention layer, a disc body and supporting blocks fixedly connected to the two sides of the disc body, the water retention layer is attached to the upper end face of the disc body, and each supporting block comprises a first block body and a second block body. The first block body protrudes out of the water retention layer, and the second block body protrudes out of the lower end face of the disc body. According to the miscanthus amurensis transplanting and transferring box provided by the utility model, the miscanthus amurensis turfs are flatly laid by arranging the transplanting discs, and the stacking of the miscanthus amurensis turfs is completed by stacking the transplanting discs. The space utilization rate is increased, meanwhile, damage to miscanthus is reduced, and the survival rate of miscanthus transplanting is increased. The water retention layer is arranged on the upper end face of the tray body, the water retention layer is wetted so as to provide water for turf of the miscanthus on the water retention layer, and the survival rate of the miscanthus is further increased.

The invention belongs to the technical field of breeding, and particularly relates to a compound feed added with fresh pennisetum sinese and used for pigs and a preparation method and application of the compound feed. The feed consists of 40-50 parts by weight of fresh pennisetum sinese and 50-60 parts by weight of basic feed for pigs. Harvesting the fresh pennisetum sinese when the plant height is 1.5 m, and chopping to be less than 1cm; the basic feed comprises corn, soybean meal, premix and other raw materials, and the premix provides various vitamins and minerals. During preparation, the fresh pennisetum sinese and the basic feed are uniformly mixed according to the proportion. The feed is applied to pig breeding, and tests show that in the feeding period of 90 days, the added fresh pennisetum sinese can partially replace a basic feed and reduce the feed intake of the basic feed, the daily average weight gain of pigs is similar to that of a group without the fresh pennisetum sinese, the feed has no significant adverse effect on the growth performance, and the feed has the advantages of saving the feed cost and improving the resource utilization rate.

This utility model relates to the field of everyday footwear technology. It discloses a Ula grass slipper, comprising, from bottom to top, an outer sole, a support layer, a Ula grass ecological felt layer, and an inner sole. The edge of the outer sole extends upwards to form a edging, and one side of the edging is connected to the upper. The upper is connected to the edge of the inner sole. This Ula grass slipper, with its natural fiber blended knitted fabric used for the Ula grass ecological felt layer, upper, and inner sole, has excellent breathability, effectively dissipating sweat and preventing dampness and stuffiness. This solves the problem of poor breathability in traditional slippers. Ula grass itself has natural antibacterial and deodorizing properties. The Ula grass ecological felt layer further enhances the slipper's antibacterial and deodorizing functions, effectively inhibiting the growth of bacteria and fungi, reducing the occurrence of foot diseases such as athlete's foot, satisfying people's pursuit of a healthy life, and compensating for the lack of antibacterial and deodorizing functions in traditional slippers.

The present application relates to a kind of industrial juicer for deep processing of pennisetum, comprising: frame, feed hopper, pretreatment zone and residue-liquid separation zone are arranged in height on frame;Roller feeding mechanism, for material is rolled and delivered to pretreatment zone;Cutting material roller mechanism, including cutting plate being arranged in pretreatment zone, the outside of cutting plate can be movably installed cutting blade, and the bottom side of cutting blade is installed broken material compression roller;Hot softening guide mechanism, for heating softening treatment to material after roller pressing and conveying it to centrifugal separation zone;Juice separation device, including primary filter cartridge and secondary filter cartridge, the top of the secondary filter cartridge is closed and fixed with end cover plate, a plurality of residue outlets are formed in end cover plate, and lifting auger is rotatably arranged in the middle of end cover plate;Juice collection mechanism, for discharging and collecting juice.The present application can facilitate feeding and overall smooth progress of juicing process, and can effectively improve juicing effect and juicing efficiency.

The utility model relates to the technical field of seed screening, and discloses an American pennisetum seed grading and screening device which comprises a screening machine, a grading and screening mechanism and a segmented conveying mechanism, a screening box is movably arranged at the top of the screening machine, and the grading and screening mechanism is arranged in the screening box; through a connecting plate and a discharging channel, unfiltered seeds can be conveniently guided into a guide cylinder through a feeding groove, a motor is matched to conveniently rotate an auger clockwise, the auger can conveniently drive the unfiltered seeds to be conveyed upwards, and meanwhile, a third screening plate is matched to conveniently convey and guide the seeds in a segmented mode; according to the seed screening device, seeds directly fall on the second screening plate through the third screening plate for secondary screening, the filtered seeds directly fall into the screening box from the second screening plate, and the filtered seeds are discharged from the first discharging plate through guiding of the second screening plate, so that the seeds are fully screened, and the screening effect is better.

The utility model relates to a carex meyeriana product hemming sewing mechanism and an automatic deviation rectifying device thereof, the automatic deviation rectifying device comprises a sewing table main body, a traction assembly and automatic deviation rectifying assemblies, the traction assembly is installed on the outer wall of one side of the sewing table main body, and the automatic deviation rectifying assemblies are installed on the two sides of the sewing table main body; the traction assembly comprises second supporting plates, a second motor, a second gear, a guide rail, a sliding plate, a traction frame, a moving frame, a second rack, a connecting plate, a second air cylinder and a traction plate. The second supporting plates are symmetrically and fixedly connected to the outer wall of one side of the sewing table body. The traction assembly is adopted, the carex meyeriana product can be automatically pulled, auxiliary traction of the carex meyeriana product by manpower is not needed, the manual burden is reduced, and the traction effect is improved; and the automatic deviation rectifying assembly is adopted, position deviation rectifying can be conducted on the wula sedge products, auxiliary deviation rectifying does not need to be conducted on the wula sedge products manually, the manual burden is reduced, and the deviation rectifying effect is improved.

The utility model discloses a seed section taking machine for agricultural planting, which comprises a bracket and a shell, and the shell is fixedly arranged at the upper end in the bracket. According to the pennisetum hydridum seed section taking device, through the mechanical simplified design, a pennisetum hydridum rod only needs to be put into the shell, and is moved to the area of the cutting wheel under the action of the guide mechanism, so that the cutting wheel performs cutting type seed section taking treatment on the pennisetum hydridum rod, and therefore, by using the device disclosed by the utility model, the seed section taking efficiency is greatly improved. Not only is the complexity of the mechanical structure of the device reduced, but also the working intensity of a user is reduced. Through the design of the pushing function, the pennisetum hydridum rod at the upper end of the interior of the shell can be smoothly moved to the area of the cutting wheel, and the phenomenon that the pennisetum hydridum rod is blocked at the upper end of the interior of the shell is prevented; seed section parts and other parts after pennisetum hydridum rods are cut can be in an independent collection state, and the collection efficiency of the seed sections is improved.

The invention discloses a method for culturing a stem tip thin cell layer of paspalum vaginatum to obtain a regenerated plant, and belongs to the technical field of tissue culture of paspalum vaginatum. According to the method, the stem tip thin cell layer of paspalum vaginatum is used as an explant material for induction to obtain a callus, then the callus is proliferated, then the callus is induced to differentiate and bud, and the regenerated plant is obtained. And finally, cutting bud clusters for seedling strengthening and rooting culture to obtain a complete plant. The method disclosed by the invention is simple and efficient, and can provide technical support for researches on germchit breeding, transgenosis and gene editing technologies, gene function verification, biotechnology breeding and the like of the paspalum vaginatum.

The invention belongs to the technical field of biomass conversion and utilization, and particularly provides a method for efficiently producing ethanol by utilizing lignocellulose. Additives such as tea saponin are introduced in the synchronous saccharification and fermentation stage, the conversion efficiency of the lignocellulose raw material can be remarkably improved, and the ethanol yield is remarkably improved. The method specifically comprises the following steps: firstly, pretreating a lignocellulose raw material by adopting a deep eutectic solvent, combining with a synchronous saccharification and fermentation technology, and introducing a specific additive in a fermentation stage, so that the conversion efficiency of the lignocellulose raw material is remarkably improved, and the ethanol yield is improved. The method for efficiently producing ethanol is high in ethanol yield, wide in raw material source and suitable for lignocellulose raw materials such as pennisetum hydridum with a compact fiber structure, has sustainable development, and provides powerful support for industrial application of lignocellulose energy.

The invention relates to an agricultural factory, and belongs to the technical field of facility agriculture and soilless culture. The whole greenhouse is a fully-sealed greenhouse composed of an inner film and an outer film, photovoltaic panels are laid on the outer film, and the greenhouse internally comprises a planting area, a fish culture area, a feeding area, a fly maggot production area and a processing area. A photovoltaic power generation system, an automatic temperature control system, a moisture recovery system, an LED lighting system, an irrigation system, a CO2 concentration control system, an element detection and supplement system and an intelligent control system are arranged in the greenhouse, pennisetum sinese is planted in the planting area, and products in the planting area and the fly maggot production area are used as feed of the fish culture area and the feeding area. The manure-containing water in the fish culture area is used for irrigating the planting area, the fish and animals are made into freeze-dried fish and freeze-dried meat, and thermoelectric water and fertilizer self-sufficiency can be achieved. The outer film of the double-layer greenhouse is used for resisting wind and laying a photovoltaic solar power generation panel and also has a heat preservation effect, and the inner film achieves the optimum temperature required by different crops under the conditions of the outer film, 24-hour illumination heat production and fishpond heat storage.

The invention provides an external pharmaceutical composition for assisting erection and delaying time and an external traditional Chinese medicine spray for assisting erection and delaying time, and belongs to the technical field of biological medicines. The external pharmaceutical composition for assisting erection and delaying the time comprises an erection-assisting exosome combination, a delaying exosome combination and prostaglandin E1, the erection-assisting exosome combination comprises exosomes of the following traditional Chinese medicine components: brilliant bugleweed herb, pterocarya strobilacea, ligusticum wallichii, cricket lespedeza herb, whorlleaf stonecrop herb, glans pennisetum, Cabaza, tribulus terrestris and eurycoma longifolia. The delayed exosome composition comprises exosomes of the following traditional Chinese medicines: albizia julibrissin, ajuga paniculata, mulberry leaves and photinia serrulata leaves. The external-use pharmaceutical composition and a transdermal enhancer are combined to prepare the external-use traditional Chinese medicine erection-assisting and time-delaying spray. According to the external spray, the prostaglandin E1 and the traditional Chinese medicine exosome have a synergistic erection assisting effect; and the time-delay traditional Chinese medicine exosome and the erection-assisting traditional Chinese medicine exosome in the traditional Chinese medicine exosome also have a synergistic effect and jointly play the erection-assisting and time-delay effects.

The present application relates to the field of agricultural science and technology, and particularly relates to a method for rapidly evaluating overwintering rate of perennial forage Pennisetum. The method for rapidly evaluating overwintering rate of perennial forage Pennisetum comprises predicting the overwintering rate of the perennial forage Pennisetum according to the germination lethal rate of the perennial forage Pennisetum after low-temperature treatment. The method can be completed in several days, greatly shortens the evaluation period of the overwintering rate and reduces the evaluation cost. Meanwhile, the method is simple to operate and the conditions are controllable, and can rapidly and quantitatively predict the overwintering rate of the perennial forage Pennisetum, thereby providing a theoretical basis for the breeding of the perennial forage Pennisetum and the regional layout of different perennial forage Pennisetums.

The application belongs to the technical field of plant transgenics, and particularly relates to a nano-magnetic-bead-mediated pollen tube channel transgenic method of Pennisetum. The method comprises the following steps: magnetic bead and plasmid DNA complexing, magnetic bead-DNA complex and pollen culture solution complexing, magnetic transfection, and pollination. Compared with a traditional transformation mode, the nano-magnetic-bead-mediated transformation method does not need to pass through tissue culture, the transformation condition is more moderate, the time is shorter, and the method is a high-efficiency and rapid transformation mode, which has great guiding significance for the genetic breeding work of the Pennisetum. A large amount of seeds can be obtained through artificial pollination, and more materials are provided for the screening of subsequent transgenic plants. The method is simple in operation, saves resources, and has a synergistic effect between the operation steps, and excellent effects are achieved.

This invention discloses a transcription factor gene PaZFP36 in *Lycoris radiata* that enhances plant cold resistance and yield, and its application. This invention belongs to the field of biotechnology. The protein PaZFP36 is any one of the following: A1) a protein with the amino acid sequence shown in SEQ ID No:2; A2) a protein obtained by substituting and / or deleting and / or adding amino acid residues to the protein of A1), possessing more than 80% identity and the same function as the protein shown in A1); or a fusion protein obtained by attaching a protein tag to the N-terminus and / or C-terminus. Overexpression in wild-type *Lycoris radiata*. PaZFP36 The gene can significantly improve the cold resistance and yield of 'Liqiu' Napier grass, which has important production application value for creating parent plants with excellent cold resistance and high yield characteristics and for breeding cold-resistant and high-yielding varieties.

The utility model discloses a kind of uralsit cushion mould pressing forming mechanism, including base and heating mechanism, the top end one side of the base is provided with equipment box, and the top end of equipment box is provided with controller, the top end other side of the base is provided with organism, and the top end both ends of organism are all provided with hydraulic press, the top end of hydraulic press is provided with bottom pressing table, the surface of bottom pressing table is provided with heating mechanism.The uralsit cushion mould pressing forming mechanism, heating mechanism is set, when uralsit cushion is mould pressed and formed by equipment, the heater in heating mechanism is heated by the heating plate in the heater, heat is conducted to the forming die installed, so that the forming die is heated, so when mould pressing and forming, uralsit material can be heated and softened by heat, so that it is easier to press and form, so as to improve the efficiency of mould pressing and forming.

The present application relates to the fluorescence marker for identifying the centromere region of the chromosome of P. wallichii and its application, belongs to the technical field of molecular cytogenetics, the fluorescence marker probe is named HS-CHTZ5, the probe belongs to the centromere region repeat sequence of P. wallichii, can be combined with the centromere of P. wallichii chromosome and show fluorescence signal, and the centromere segment of P. wallichii chromosome is identified.The fluorescence marker provided by the present application can be used as a beneficial supplement to the prior art, and through in situ hybridization, the efficient identification of the centromere region of the chromosome of P. wallichii is realized, and the present application has important significance for cytogenetic map construction, chromosome karyotype analysis and different genus and species chromosome relationship analysis.

The application discloses a kind of agrobacterium-mediated'Bond No. 1'hybrid pennisetum genetic transformation method. The method comprises the following steps: using maltose solution containing glutamine to pretreat hybrid pennisetum embryonic callus;Agrobacterium resuspension solution containing the vector of target gene is used to infect pretreated callus;The callus after infection is inoculated into co-culture medium, recovery medium, screening medium, differentiation medium and rooting medium in sequence for culture, and regeneration transformation plant is obtained. The application successfully establishes agrobacterium-mediated'Bond No. 1'hybrid pennisetum genetic transformation system, and the positive rate can reach 62%, and'Bond No. 1'hybrid pennisetum efficient and stable genetic transformation is first effectively realized, and the analysis of hybrid pennisetum gene function research and the excavation of key candidate gene are laid the foundation for hybrid pennisetum molecular breeding.

The invention belongs to the technical field of plant cold resistance detection, and particularly relates to a hyperspectral imaging method and system based on machine learning and application of the hyperspectral imaging method and system in cold resistance evaluation of pennisetum alopecuroides. The invention discloses a method and a system for predicting cold resistance of pennisetum alopecuroides based on a hyperspectral imaging technology of machine learning. The prediction method comprises the following steps: acquiring a pennisetum alopecuroides leaf hyperspectral image by using a hyperspectral imaging system, determining a region of interest, and correcting the region of interest to obtain standard hyperspectral data; obtaining the value of the low-temperature induction component of the leaf, calculating the weight ratio of each physiological index, and determining that the proline content is the physiological index with the maximum weight ratio; preprocessing the average hyperspectral data and screening characteristic wave bands; and constructing an estimated remote sensing monitoring image under the low-temperature stress of the pennisetum alopecuroides by utilizing the characteristic wave bands and different models. According to the method, the cold resistance of the pennisetum alopecuroides can be nondestructively and effectively detected, so that feasibility is provided for low-temperature stress diagnosis and breeding of the pennisetum alopecuroides.

The utility model provides a seta removing device for pennisetum alopecuroides seeds, which relates to the technical field of seed processing and comprises a support, a protective shell is fixedly connected onto the support, and a discharge hopper is arranged at the bottom end of the tail of the protective shell in a penetrating manner; a roller is rotationally connected into the protective shell, a driving mechanism is arranged on the support, and the driving mechanism is in transmission connection with the roller; a dust collection barrel is arranged in the roller in a penetrating mode, the dust collection barrel is fixedly connected with the protective shell, and a plurality of dust collection openings are formed in the peripheral wall of the dust collection barrel in a penetrating mode; the dust collection fan is arranged in the dust collection barrel, and the dust collection fan is used for sucking bristles separated from the pennisetum alopecuroides seeds in the roller into the dust collection barrel and then discharging the bristles. According to the pennisetum seed bristle removal device, bristles of pennisetum seeds fall off through friction, then the falling bristles are guided and discharged through the dust collection fan, the pennisetum seeds without the bristles are discharged through the discharging hopper, and batched bristle removal treatment on the pennisetum seeds is achieved.