17 results about "Mature stage" patented technology

The invention belongs to the technical field of plant genetic engineering, and particularly relates to a method for improving drought resistance of rice. By knocking out the DRG1 gene and combining deep root ratio phenotype identification and seedling stage and mature stage drought stress phenotype identification results, when the gene segment is deleted, the deep root ratio of rice is reduced, the drought stress resistance is reduced, and the function and application approach of the gene are proved.

This invention relates to the field of bioengineering technology and provides an application of the maize heat shock transcription factor gene ZmHSF18, wherein the nucleotide sequence of the maize heat shock transcription factor gene ZmHSF18 is shown in SEQ ID NO:1. Experiments have demonstrated that overexpression of the maize heat shock transcription factor gene ZmHSF18 in plants can significantly improve seed germination rate and frozen survival rate at the mature stage under low-temperature stress, reduce malondialdehyde accumulation, and increase superoxide dismutase activity. Therefore, this maize heat shock transcription factor gene ZmHSF18 can be used to improve plant cold tolerance and create transgenic plants with enhanced cold tolerance, possessing important application value in plant genetic engineering and stress resistance breeding.

The present application belongs to the poplar plantation technical field, and particularly relates to a poplar plantation structure optimization and sustainable management method and system. The method comprises the following steps: S1, constructing a growth model of poplar, and dividing the poplar into three stages of a juvenile stage, a middle-aged stage and a near-mature stage according to the growth model; S2, collecting site factor data; S3, dividing the research area into multiple site grade areas, and configuring differentiated growth parameters, rotation periods and felling intensities for the site grade areas; S4, building a multi-objective linear programming model, and the objective function covers maximization of total wood yield, minimization of management cost and maximization of ecological benefit; S5, linearly fitting the juvenile stage, the middle-aged stage and the near-mature stage to obtain the corresponding linear equations of the stages, embedding the linear equations of S2 into the multi-objective linear programming model as constraint conditions, and clearly defining the forest age range of each stage; and S6, solving the multi-objective linear programming model to obtain optimal felling area, rotation period and felling intensity parameters.

The present application belongs to the technical field of plant morphology, and particularly relates to a seed plant propagule three-dimensional shape measurement method based on a video stereomicroscope, comprising: collecting seed plant propagules at the mature stage and air-drying to a constant weight; classifying the propagules according to the seed, fruit shape and surface accessory structure, and determining the measurement criteria of the shape of different categories of propagules; scanning the three-dimensional structure of each category of propagule by using a video stereomicroscope, and accurately measuring the shape parameters length, width and thickness of the propagule; normalizing each category of propagule, calculating the shape index of the propagule, and representing the closeness to a spherical shape. The method quantifies the complex three-dimensional shape characteristics of the seed plant propagule into a comprehensive shape index, realizes accurate quantitative measurement and digitization of the morphological characteristics of the propagule, solves the pain point of determining the shape of the propagule by using a traditional observation tool, and facilitates the comparative identification of the three-dimensional shapes of different categories of seed plant propagules.

This utility model belongs to the field of passion fruit technology, and in particular to a climbing device for passion fruit cultivation. It includes an adjustable climbing structure with outward-expanding climbing structures on both the front and rear sides, and reinforced support structures on both sides. Through the adjustable climbing structure and the reinforced support structures, the reinforced support structures effectively support the adjustable climbing structure, ensuring its stability. Furthermore, the device possesses high flexibility and adaptability, allowing for precise adjustments based on the actual needs of passion fruit at different growth stages. Whether it's the initial climbing during the seedling stage or the vigorous growth during the mature stage, this structure provides just the right amount of support and guidance, not only helping the vines achieve even distribution throughout the growth process but also effectively preventing insufficient light caused by overly dense vines.

The invention discloses a tenebrio molitor pupa breeding technology and an eating method, and belongs to the technical field of tenebrio molitor pupae. The breeding process comprises the following steps: preparing feed by taking wheat bran, selenium-enriched yeast, selenium-enriched vegetables and traditional Chinese medicinal material powder as raw materials, and feeding tenebrio molitor larvae until the tenebrio molitor larvae grow to a mature stage; placing the mature larvae of the tenebrio molitor in a low-temperature environment of 0-12 DEG C for refrigeration; when fresh pupae are required to eat, the refrigerated mature tenebrio molitor larvae are recovered and pupated at the temperature of 25-35 DEG C, and the fresh pupae pupated within 15 min are obtained. According to the method, pupation centralization of the tenebrio molitor larvae is achieved, instant supply of fresh pupae is guaranteed, commercialization requirements are met, the nutritional quality of the fresh pupae is improved, the problem of side effects possibly caused by eating of the fresh pupae is solved, and the aim of conditioning the body of the tenebrio molitor pupae is achieved.

The application discloses a cadmium-polluted paddy field rice-shrimp co-cultivation method using sulfate-reducing bacteria, which comprises the following steps: step 1, spraying diluted SRB bacterial agent propagation liquid in the cadmium-polluted paddy field to be treated, then making the bacterial agent fully contact with the soil in the form of rotary tillage, and adding water in the paddy field to a depth of 5-10 cm, wherein the cadmium content in the cadmium-polluted paddy field to be treated is 0.40-1.50 mg / kg, and the pH of the cadmium-polluted paddy field ranges from 5.5 to 6.5; step 2, monitoring the redox potential of the soil in the paddy field until the redox potential value of the soil is monitored to be below-150 mV within a preset time period, and then performing rice transplanting operation; step 3, after 10-15 days of rice transplanting, putting Australian freshwater lobster fry with a body length of 2-5 cm; and step 4, harvesting rice and lobsters at the mature stage of the rice respectively. The application aims to significantly reduce the cadmium content in rice and the availability of soil cadmium through the sulfate-reducing bacteria and rice-shrimp co-cultivation system.

The application discloses ZmRLR1 application of a gene and a coded protein in regulating corn root development. ZmRLR1 The nucleotide sequence of the gene is shown in the sequence table SEQ ID No: 1, and the protein sequence is shown in the sequence table SEQ ID No: 2. The number of lateral root primordia, the total length of lateral roots and the total lateral root density of the seedling stage of the ZmRLR1 protein overexpression transgenic plant are significantly increased, the number and size of the root system of the fifth layer of crown roots at the mature stage are significantly increased, and the weight of the rhizosphere soil is increased.

The application provides a fruit picking method, system and device based on target recognition and a storage medium, and relates to the technical field of computer vision.The application collects image data of a fruit to be recognized, performs preprocessing, constructs a fruit maturity prediction model by using a convolutional neural network, inputs the preprocessed image data into the model, outputs a maturity index of the fruit, further extracts key features in the fruit image, calculates the difference between the maturity stage and the fruit image features, generates a difference index, corrects the maturity index of the fruit, sets a maturity threshold, and judges whether the fruit has reached a picking standard.The application realizes accurate judgment of fruit maturity and automatic picking by combining image processing, feature data analysis and a machine learning model.

The invention relates to the technical field of plant biological breeding, in particular to application of OsRH11 protein and a coding gene thereof in controlling male reproductive development of rice. The rice OsRH11 gene is separated and cloned, and it is found that a rice plant with the OsRH11 gene knocked out is pollen-free abortion; the pollen fertility of the complemented plant line is recovered, and the single plant maturing rate in the mature period is close to that of a wild type. Therefore, the invention newly finds a gene, namely the OsRH11 gene, related to the male sterility of the rice. Meanwhile, the reason of rice male sterility caused by gene mutation is discussed, the molecular mechanism of rice male sterility pollen abortion is clarified, the cognition of people on the rice male sterility molecular mechanism is further deepened, and a new viewpoint is provided for the molecular regulation mechanism of rice male reproductive development. The application of the male sterility gene OsRH11 gene in genetic improvement of rice varieties has important practical significance for rice breeding workers.

The invention provides an application of a GmbetaCA11 protein and / or a GmbetaCA11 gene in promoting soybean growth and / or increasing soybean yield, and belongs to the technical field of plant genetic engineering. The Gm beta CA11 gene is a gene for coding soybean carbonic anhydrase. By enhancing the expression level of the GmbetaCA11 gene and increasing the accumulation amount of the GmbetaCA11 protein in soybean bodies, the soybean growth and development process can be effectively regulated and controlled, the soybean plant growth can be remarkably promoted, and the soybean yield related traits can be improved. Through overexpression of the GmbetaCA11 gene in soybeans, the plant height and yield can be significantly increased; the plant height and single plant yield of the transgenic plant in the mature period are obviously higher than those of a control plant, and the growth situation in the seedling period is also better than that of the control plant. According to the invention, the important function of the GmbetaCA11 gene in regulation and control of soybean growth and yield formation is defined, and the GmbetaCA11 gene has important theoretical value and application prospect in cultivation of new high-yield soybean varieties.

This utility model discloses an integrated device for plant seedling maintenance, relating to the field of seedling maintenance technology. It includes a support frame, of which multiple supports are provided, and a ring-shaped support member is fixedly connected to the top of each support frame. A ring-shaped irrigation member is slidably connected to the center of the bottom of the ring-shaped support member. When it is necessary to adaptively adjust the irrigation height of the irrigation nozzle, the positioning pin on the outer wall of the sliding plate can be pulled outwards, separating its end from the positioning hole. After being pulled out, the ring-shaped irrigation member can be slid up and down along the guide groove and slide of the support frame according to actual needs until the irrigation nozzle is aligned with the target irrigation area. Then, the positioning pin is released, allowing it to be inserted into the positioning hole of the corresponding height under the action of a compression spring, quickly locking the height of the ring-shaped irrigation member. The irrigation height can be adjusted according to the root distribution characteristics of the seedling and mature stages of the plant.

The invention discloses a corn hybrid germplasm resource saline-alkaline tolerant system as well as a construction method and application thereof, and belongs to the technical field of agricultural biology. The corn hybrid germplasm resource saline-alkaline tolerance system comprises evaluation subsystems of a germination stage, a seedling stage and a mature stage; in the germination stage, a mixed saline-alkaline solution with a specific ratio is adopted for stress, and a vitality index, relative water content, root length, root dry weight and germination rate are screened as key indexes; saline-alkali soil potting stress is adopted in the seedling stage, and fresh leaf weight, SOD activity, POD activity, relative water content and chlorophyll content are screened as key indexes; in the mature period, through saline-alkali soil field tests, hundred-grain weight and single spike weight are screened as key indexes. And calculating a comprehensive evaluation value of saline-alkaline tolerance of each stage through principal component analysis and a membership function method, so as to realize accurate grading of germplasm resources. The invention provides a systematic and reliable technical scheme for identification and breeding of saline-alkaline tolerant germplasm of corn.

The invention discloses a method for preventing pod cracking and increasing yield in the rape harvesting process, and belongs to the technical field of rape harvesting methods. Regulating and controlling the environment at the later growth stage: keeping the relative water content of the soil within the range of 40-60% and keeping the relative water content stable through irrigation or drainage measures from 10-15 days before the rape enters the pod mature stage to harvesting; spraying an anti-shattering agent: spraying the anti-shattering agent after 80% or more of rape pods in the field enter a wax ripening stage and have white film layers; harvesting of mature oilseed rapes: using an oilseed rape combine harvester to directly harvest the oilseed rapes, and according to harvesting requirements, the height of a header of the harvester is set to be 8-32 cm, the rotating speed of a reel is adjusted to be 18-32 revolutions per minute, the rotating speed of a threshing cylinder is set to be 400-500 revolutions per minute, and the harvesting operation speed is controlled to be 1.4-2.6 kilometers per hour. By means of the mode, the anti-shattering agent is sprayed to the oilseed rape in the specific period, meanwhile, harvesting parameters are optimized, the yield loss is reduced, and the economic benefits of oilseed rape planting are improved.

Provided in the present invention is an oligosaccharide-based multifunctional plant immunomodulator. Specifically, the plant immunomodulator has a structure represented by formula I below. The plant immunomodulator of the present invention can not only regulate the growth and development of crops, but also induce crops to resist against biological stress and abiotic stress, thereby improving the yield and quality of crops. By using the plant immunomodulator of the present invention, not only can multiple plant growth and development processes be positively regulated, including promoting seed germination, seedling morphogenesis and plant vigor at the mature stage, thereby increasing the crop yield and fruit quality, but also improving the resistance of plants against biological stress (diseases, insects and weeds) and abiotic stress (a frozen or near-frozen soil environment, drought, waterlogging, salinity and alkalinity, extremely low / high temperature, etc.). In addition, the plant immunomodulator of the present invention has the advantages of being non-toxic, free of pesticide residues, environmentally friendly, incapable of inducing pesticide resistance in pathogens, etc.

The present application relates to the beer brewing technical field, specifically to a kind of beer fermentation equipment and process, equipment includes yeast activation tank, main fermentation tank, flavour modification tank and post-mature wine storage tank in turn, respectively corresponding yeast activation, main fermentation, flavour modification, low-temperature post-mature four fermentation stages, quantitative sterile conveying pump and sterile control valve are achieved between each tank body quantitative sterile conveying of material, and each stage can be independently regulated and controlled environmental parameter;Process includes yeast activation stage, main fermentation stage, flavour modification stage and low-temperature post-mature stage.In the present application, each tank body only bears single fermentation function, single-tank failure does not affect the operation of other processes, realizes the accurate control of yeast metabolic pathway, directional enrichment of flavouring material, the consistency deviation of batch flavour is small, and beer flavour level is more rich, which can be widely applied to the large-scale production of various types of beer, especially suitable for customized production of high-quality craft beer.

The invention provides a method for efficiently accelerating maturation of warm-water shellfish gonads in a high-temperature period. Aiming at the problem of low maturity of sexual glands of warm-water breeding shellfishes in a high-temperature period, the principle that feeding, growth and development of variable-temperature animals are positively correlated with environment water temperature is utilized, and according to the biological characteristics that the animals have compensatory feeding and development, the warm-water breeding shellfishes in the high-temperature period have low maturity of sexual glands; the rapid development of the gonad of the seed shellfish is promoted through alternate variable-temperature breeding (low-temperature fasting breeding for 6 hours every day and high-temperature feeding breeding for 18 hours, and circulation and repetition). Only two weeks are needed, more than 80% of the scallop gonads can develop from the vacuole stage to the mature stage, and only 20% of the parent scallop gonads in the natural sea area reach the mature stage. The method effectively solves the problem of low maturity of the sexual glands of the shellfish seeds in the production of the warm water shellfish seeds in the high-temperature period. Therefore, the method has the advantages of being high in efficiency, short in consumed time, high in applicability and the like.