245 results about "Chlorophyll content" patented technology

The invention belongs to the technical field of agriculture, and particularly provides a compound microbial agent and application thereof. The compound microbial agent is prepared from bacillus velezensis RKN1111, bacillus subtilis N-3 and paenibacillus mucilaginosus HX-02, and the compound microbial agent is prepared from bacillus velezensis RKN1111, bacillus subtilis N-3 and paenibacillus mucilaginosus HX-02, and the compound microbial agent is prepared from bacillus velezensis RKN1111, bacillus subtilis N-3 and paenibacillus mucilaginosus HX-02. The compound microbial agent can effectively improve the pH and EC of saline alkali soil, increase the content of alkali-hydrolyzable nitrogen, available phosphorus and quick-acting potassium in the soil, and play a significant role in increasing the plant height, stem diameter, chlorophyll content and aboveground biomass of corn plants in coastal saline-alkali soil.

The invention discloses application of a GsRZ1A gene in improving alkali resistance of plants, and belongs to the technical field of genetic engineering. The nucleotide sequence of the GsRZ1A gene is as shown in SEQ ID NO: 1, and the coded amino acid sequence of the GsRZ1A gene is as shown in SEQ ID NO: 2. A transgenic line is obtained by constructing an overexpression vector of the GsRZ1A gene and transforming soybeans. A transgenic line is subjected to alkali stress treatment, and a result shows that the overexpressed GsRZ1A soybean line shows a faster relative growth rate, the total leaf area, the leaf chlorophyll content and the relative water content are all higher than those of a control line of an empty vector, the total root length and the total root surface area of a root system are also remarkably larger than those of a control group, and the antioxidant enzyme activity can be improved; the accumulation of superoxide anions and malonaldehyde is reduced, and the accumulation of osmotic regulation substances such as soluble sugar is increased to enhance the tolerance of the soybeans to alkali stress, so that the method has an important application prospect in alkali-resistant plant breeding.

The invention relates to the technical field of agricultural quantitative remote sensing and intelligent agriculture, and discloses a multi-source remote sensing data radiation correction and chlorophyll content cross-platform inversion method, which comprises the following steps: synchronously obtaining ground actual measurement, unmanned aerial vehicle and satellite remote sensing data, calculating vegetation indexes, and screening sensitive characteristic variables by using Pearson correlation analysis; establishing a radiation correction model by adopting a ratio averaging method, performing radiation normalization processing on satellite data by taking unmanned aerial vehicle data as a reference, and eliminating sensor response differences; an SPAD inversion model is constructed and optimized based on Z-score standardization, the SPAD inversion model is migrated and applied to corrected satellite data, a regional scale chlorophyll distribution diagram is generated through pixel-by-pixel calculation, and then a differentiated farmland management strategy is formulated. According to the method, the difficulty of multi-source data collaboration is solved, the regional scale crop chlorophyll monitoring precision is improved, and scientific decision support is provided for large-area crop fertilization.

The invention belongs to the technical field of biological agents, and particularly relates to ginsenoside variant flavobacterium DG-16 and application thereof in relieving continuous cropping obstacles of angelica sinensis and improving the quality of the angelica sinensis. According to the ginsenoside variant flavobacterium DG-16 disclosed by the invention, the growth of angelica sinensis is promoted by increasing the contents of jasmonic acid and cytokinin hormones, reducing the contents of gibberellin and salicylic acid hormones and promoting the circulation and utilization of nitrogen; in addition, the flavobacterium ginsenoside variant DG-16 can significantly increase the chlorophyll content, is beneficial to photosynthesis of the angelica sinensis, effectively changes the physiological and biochemical states of the angelica sinensis, can resist root rot of the angelica sinensis so as to relieve successive cropping obstacles and improve the quality, and has a significant effect.

The invention relates to the field of gene engineering and molecular breeding, and discloses application of a ZmTCP5 gene in regulation and control of heat resistance of corn. According to the invention, three types of knockout mutants of the gene are obtained by using a CRISPR / Cas9 technology, and three overexpression materials are created. At normal temperature (25-28 DEG C), the material has no obvious phenotypic difference with a wild type; however, under high temperature stress (45 DEG C), the ZmTCP5 knockout mutant has enhanced heat resistance, reduced reactive oxygen species (ROS) accumulation, and significantly increased ROS scavenging enzyme activity, chlorophyll content and photochemical efficiency; on the contrary, the ZmTCP5 overexpression strain is more sensitive to heat stress, which indicates that the ZmTCP5 negatively regulates the heat resistance of the corn. The research provides a theoretical basis for analyzing a heat-resistant molecular mechanism of the corn, and also provides an important gene resource for creating a new germplasm of the heat-resistant corn.

The invention discloses application of a phosphorus-solubilizing fungus solid bacterial fertilizer in promoting crop growth, and belongs to the field of environment and the technical field of agriculture. The solid bacterial fertilizer comprises penicillium deserticola and / or penicillium fistulosum, the penicillium deserticola and / or penicillium fistulosum are compounded according to the proportion of 1: 1, agricultural waste mushroom bran serves as a main carrier, and the inoculum size of a bacterial solution is 9 wt%. The bacterial fertilizer can effectively activate insoluble phosphorus in soil, significantly improve absorption and utilization of phosphorus by crops, promote plant growth, increase root length and biomass, increase leaf chlorophyll content, enhance photosynthesis capability, reduce dependence on chemical phosphate fertilizer and realize agricultural waste recycling, and has the advantages of high efficiency, environmental protection and low cost.

The invention discloses a method for determining a toughness and catastrophe threshold value of a functional group of a water ecosystem, and relates to the technical field of water environment ecological engineering.The method comprises the steps that the state of a target water ecosystem is determined according to the total nitrogen content, the total phosphorus content and the chlorophyll content of a water body in the target water ecosystem, the state of the target water ecosystem is eutrophication or non-eutrophication; determining the biomass of phytoplankton based on the target water ecosystem state; utilizing an Ecopath model to construct a static food network relation model of the target water ecosystem; based on the target water ecosystem state, the biomass of the phytoplankton and the static food network relation model, determining a toughness threshold value and a catastrophe threshold value of the biomass of each functional group; each functional group is a plurality of groups for dividing species in the target water ecosystem. According to the method, the water ecosystem functional group toughness threshold value and the catastrophe threshold value which are simple to operate and high in accuracy can be provided.

The invention discloses a rice chlorophyll content prediction method, device, medium and equipment, and relates to the technical field of crop growth, and the method comprises the following steps: obtaining canopy spectral data and physicochemical parameters of rice in a to-be-detected area; dividing the rice canopy into three concentric circle areas based on the leaf inclination angles of different leaves of the rice, and obtaining the layered rice canopy; constructing a hierarchical radiation transfer model HRTM for simulating a rice hierarchical spectrum, and inputting the physical and chemical parameters into the hierarchical radiation transfer model HRTM to generate hierarchical spectrum data; constructing a lookup table LUT based on the physicochemical parameters and the layered spectral data, taking the lookup table LUT as an analog data set, improving the analog data set by adopting a quartile method, and determining analog spectral data; based on the simulated spectrum data, constructing an inversion model for acquiring the chlorophyll content of the rice layers layer by layer; and inputting hyperspectral data to be measured into the inversion model, and determining a corresponding chlorophyll content prediction result.

The invention provides a plant chlorophyll index determination method based on multispectral laser, which comprises the following steps: detecting ambient light intensity of an environment where plant leaves are located to obtain an actual ambient light detection value; according to the actual detection value of the ambient light, a pulse generator is regulated and controlled, and a PWM frequency conversion signal is generated; driving a multi-band laser source based on the PWM frequency conversion signal to enable the laser source to emit laser and form uniform light spots on the surface of the plant leaf; receiving and preprocessing the laser signal reflected by the plant leaf to obtain a pure electric signal; the pure electric signal is converted into a digital quantity, calculation processing is carried out based on the digital quantity and a preset digital quantity, and the reflectivity corresponding to each wave band is obtained; and calculating based on the reflectivity corresponding to each wave band to obtain the chlorophyll index. By adopting the method, related data of the chlorophyll content of the plant can be accurately obtained, and technical support is provided for agricultural scientific management, diagnosis decision and high yield.

The invention relates to the technical field of rice planting methods, in particular to a nutrient solution for culturing Guizhou indica rice variety 'Guizhou Red No.1' as well as application and a culture method of the nutrient solution. According to the invention, a nutrient solution specially aiming at 'Guihong No.1' is researched and determined, the nutrient solution is added with micromolecular substances and Br with the final concentration of 0.1-0.6 [mu] M, GABA with the final concentration of 0.3-0.9 mM, melatonin with the final concentration of 0.5-5 [mu] M and salicylic acid with the final concentration of 10-20 [mu] M, and the nutrient solution specially aiming at 'Guihong No.1' can effectively improve the plant height, the biomass (fresh weight), the nitrogen content, the chlorophyll content and the dry weight of a single plant of 'Guihong No.1'. The nutrient solution provided by the invention can solve the technical problem of lack of an effective culture method in the prior art, and can better promote large-scale, intensive and factory planting management and large-area popularization and application of indica rice varieties in Guizhou by utilizing synergistic interaction and advantage complementation among different treatment modes.

The invention belongs to the technical field of biology, and particularly relates to Dendrobium officinale DoSTRK1 protein as well as a coding gene and application thereof. The invention discloses a Dendrobium officinale DoSTRK1 protein, which comprises a protein consisting of an amino acid sequence as shown in SEQ ID NO.6, and a protein which is subjected to substitution and / or deletion and / or addition of one or more amino acid residues, is related to plant drought tolerance and is derived from the protein. The invention finds that overexpression of the gene encoding the DoSTRK1 protein can enable an overexpression strain to show stronger tolerance under salt stress of a plant, and specifically, the overexpression strain shows longer roots in a seedling stage and higher chlorophyll content in a growth stage. Under drought stress, the overexpression strain also shows stronger tolerance, and compared with a wild type, the overexpression strain has the advantages that the root length in the seedling stage is increased, and the survival rate in the growth stage is higher.

This invention belongs to the field of post-harvest quality testing technology for agricultural products, specifically relating to a method for predicting the degree of chilling injury in bitter gourd. The method uses *Bitter Gourd 'Du Ruan'* as the research object, employing segmented pre-cooling treatment to measure indicators such as chilling injury index, respiration rate, weight loss rate, firmness, chlorophyll content, malondialdehyde content, and antioxidant enzyme activity during storage. This determines suitable pre-cooling conditions, explores the impact of different pre-cooling settings on its physiological quality and chilling injury development during storage, and constructs a bitter gourd chilling injury prediction model based on key indicators. The method for predicting the degree of chilling injury in bitter gourd provided by this invention offers a theoretical basis and technical support for optimizing post-harvest cold chain processes for bitter gourd, mitigating low-temperature damage, and extending shelf life.

The present disclosure provides isolated Pseudomonas koreensis strains useful for enhancing crop yield, as well as inoculant compositions comprising one or more of the isolated strains, seeds that have been treated with one or more of the isolated strains, and methods of using the isolated strains to enhance root growth, nutrient uptake, chlorophyll content, etc.

The invention relates to the technical field of intelligent agriculture, and discloses a facility vegetable field prediction system and method based on multi-modal vision, and the system comprises a terminal control and data collection system which is used for carrying out the image collection of the growth condition of leafy vegetables in a vegetable field; the data processing system is used for denoising, correcting and registering the images and aligning the images of different modalities in space; and the data analysis system reconstructs a 3D model of the plant by using point cloud data of a depth camera or LiDAR, and constructs an integrated sensing system of a two-dimensional form, a three-dimensional structure, a physiological state and a moisture condition by fusing RGB, hyperspectrum, depth and thermal imaging multi-mode image acquisition equipment. According to the system, the technical bottleneck of one-sided information of a single sensor is effectively overcome, the number of leaf vegetables, the canopy volume, the chlorophyll content, the canopy temperature and key parameters directly related to yield formation can be synchronously obtained, and a solid data foundation is laid for high-precision yield prediction.

The invention provides a rice monitoring method, device and system based on multi-modal data fusion, and the method comprises the steps: obtaining the spectrum and image data of a rice canopy, respectively extracting the features of the data, inputting the features to a trained rice monitoring model, and obtaining a monitoring result; the rice monitoring model is obtained based on the following steps: preprocessing rice canopy spectrum and image data to obtain a feature vector and a pixel matrix; and training a multi-task learning model composed of a one-dimensional convolutional neural network and a two-dimensional coupon neural network based on the sample feature vector, the pixel matrix and the corresponding label matrix. Aiming at the problems of tedious flow, low efficiency, poor real-time performance and the like in the existing rice nitrogen and chlorophyll detection and pest and disease damage identification technology, rapid in-situ detection of the nitrogen and chlorophyll contents of rice leaves and efficient pest and disease damage identification are realized through a map fusion technology; the technical problems that an existing rice monitoring method is prone to misjudgment and missed judgment and low in efficiency can be solved.

The invention discloses application of bacillus megaterium and a biological fertilizer thereof in rice planting, and relates to the technical field of microorganisms. The bacillus megaterium is preserved in the China General Microbiological Culture Collection Center on July 10, 2025, and the preservation number of the bacillus megaterium is CGMCC (China General Microbiological Culture Collection Center) NO.35179. The bacillus megaterium has the advantages that the bacillus megaterium is preserved in the China General Microbiological Culture Collection Center on July 10, 2025; the strain is a plant growth-promoting bacterium and has a good rice growth-promoting effect, and when the prepared biological fertilizer is applied to the rice planting process, compared with a control group, the tiller number of rice is increased by 64.44%, the plant height is increased by 2.77%, and the leaf chlorophyll content is increased by 8.38%. The bacillus megatherium provided by the invention and the biological fertilizer prepared by strain fermentation have the advantages of greenness, safety, high efficiency and the like, and have a better application prospect in the aspect of agricultural production.

The application relates to the technical field of molecular biology, and discloses a cold-tolerance identification method of Pennisetum based on a 65-core molecular marker set, a primer group and a gene chip and application thereof. The application collects core germplasm resources of the Pennisetum through a system, and constructs a GWAS population by using multi-environment (different altitudes) conditions, so that a wide genetic background and phenotype variation are fully covered, and a material foundation for genetic analysis of cold tolerance is laid. In the aspect of cold-tolerance phenotype identification, the application innovatively takes the chlorophyll content of leaves and the percentage of green leaves after natural low-temperature stress in autumn and winter fields as the cold-tolerance evaluation indexes, judges individuals with more than 40 excellent allelic variations as high-cold-tolerance varieties, and establishes a rapid and non-destructive phenotype screening method which can be implemented at the seedling stage.

The invention discloses a method for enhancing adhesion ability of coral larvae after enhancement and release. According to the method, coral larvae (such as coral plankton larvae) are exposed to a 40 mM calcium chloride (CaCl2) solution to be treated for 12-24 hours, and then enhancement and release are carried out. The treated larvae show remarkably enhanced adhesion ability after releasing, the accumulated adhesion rate within 3 days reaches 66.33% and is increased by 240% compared with that of a control group in the same period, and the average survival rate reaches 98.14%. Meanwhile, the transverse growth area and the budding number of attached larvae are remarkably increased, and the density of zooxanthellae, the photosynthetic efficiency and the chlorophyll content have no negative effects. The CaCl2 solution is used for successfully inducing the continuous attachment effect of the coral larvae, the method is easy and convenient to operate, low in cost and environmentally friendly, the attachment success rate of enhancement and release of the coral larvae and the subsequent growth performance of the larvae are remarkably increased, and the method is suitable for repairing and protecting a coral reef ecological system.

The application provides a method for identifying overall maturity of cigar tobacco germplasm resources, and belongs to the technical field of cigar tobacco germplasm resource identification and tobacco leaf harvesting. The identification method comprises the following steps: measuring chlorophyll content of upper, middle and lower leaves (or upper and middle leaves) of cigar tobacco at the mature period of the cigar tobacco; calculating average values and variation coefficients of the chlorophyll content of the upper, middle and lower leaves (or the upper and middle leaves) of the variety; when the average variation coefficient of the whole plant is less than 15% (or less than 11.7%), the variety is identified as a whole plant maturity consistent variety, and whole plant or half whole plant harvesting can be carried out. The identification method is conducive to screening cigar tobacco varieties suitable for whole plant / half whole plant harvesting, and contributes to shortening the harvesting period, reducing the harvesting cost, and improving the appearance quality and sensory quality of cigar tobacco leaves.

This invention belongs to the field of organic agriculture, specifically a biological agent for promoting wheat photosynthesis and its preparation method. Addressing the problems of existing biological agents having relatively simple components, low absorption and utilization efficiency by wheat ears, and a tendency to reduce nitrate reductase activity, nitrogen utilization, and chlorophyll content in wheat leaves, the following solution is proposed: the biological agent comprises the following raw materials in parts by weight: 50-65 parts of yield-enhancing amine, 15-20 parts of choline chloride, 10-15 parts of diethylaminoethanol hexanoate, 5-10 parts of brassinolide, 3-5 parts of p-chlorophenoxyacetic acid, 1-3 parts of calcium diphenylureasulfonate, 2-5 parts of trace agents, and 2-4 parts of ethylene glycol styraldehyde. The biological agent of this invention can promote better photosynthesis in wheat, enhance nitrate reductase activity, and improve nitrogen utilization.

The invention relates to aureobasidium pullulans Cy28 and application thereof, and belongs to the technical field of microorganisms, the aureobasidium pullulans Cy28 can reduce the content of Cd in soil and can generate more pullulan in a Cd-containing environment; when the culture medium is applied to lettuce planting, the dry weight of edible tissues of the lettuce can be remarkably increased in a cadmium-free or cadmium-containing environment, and the content of Cd in the edible tissues and roots of the lettuce is reduced, so that the content of Cd in the edible tissues of the lettuce reaches the edible standard; in addition, the vitamin C content, the chlorophyll content, the soluble protein content and the IAA content of edible tissues of the lettuce can be improved; meanwhile, the content of beneficial microorganism Pseudarthrobacter in the soil can be remarkably increased in a cadmium environment, and the effect of improving the soil is achieved.

The invention provides a highland barley HvDREB3 protein, a coding gene and application thereof, and belongs to the technical field of plant genetic engineering. The HvDREB3 protein provided by the invention has an amino acid sequence as shown in SEQ ID NO.1, and the coding gene of the HvDREB3 protein has a nucleotide sequence as shown in SEQ ID NO.2. The invention also provides application of the protein, the coding gene of the protein or a biological material containing the coding gene in regulation and control of plant freezing resistance, and a method for constructing an anti-freezing plant. The HvDREB3 gene is subjected to overexpression in highland barley through an overexpression transgenic technology, so that the survival rate is remarkably increased, the ion leakage rate is remarkably reduced, the chlorophyll content is increased, the antioxidant enzyme activity is enhanced, and the capability of resisting low-temperature freezing injury stress is remarkably improved.

The invention provides a penicillium oxalicum strain K3R2 and a preparation method and application of a biological agent of the penicillium oxalicum strain K3R2. The biocontrol bacterium Penicillium oxalicum strain K3R2 screened by the invention is preserved in the China General Microbiological Culture Collection Center on September 25, 2025, the preservation number is CGMCC NO.42219, and the preservation address is Institute of Microbiology, Chinese Academy of Sciences, No. 3, No.1 yard, Beichen West Road, Chaoyang District, Beijing; the ITS sequence of the Penicillium oxalicum strain K3R2 is as shown in SEQ ID NO: 1, and the CaM sequence is as shown in SEQ ID NO: 2. The penicillium oxalicum strain K3R2 provided by the invention can inhibit hypha growth and spore germination of beet neocam spores, the hypha inhibition rate is 83.60%, the spore inhibition rate is 65.31%, and the penicillium oxalicum strain K3R2 has the effect of preventing and treating quinoa stem blight. Meanwhile, the penicillium oxalicum strain K3R2 has the capabilities of salt resistance, alkali resistance, phosphate solubilization, potassium solubilization, cellulose solubilization and nitrogen fixation; the strain K3R2 remarkably promotes the growth of quinoa plants, so that the chlorophyll content is increased by 20.22%, and the accumulation of nutrient substances is accelerated; the fresh weight, the dry weight and the stem diameter of quinoa plants are increased, and the lodging resistance is enhanced.

The application provides a growth promoting microbial preparation for relieving saline-alkali stress and application thereof, and belongs to the technical field of agricultural microorganisms. The microbial preparation provided by the application can significantly relieve the adverse effect of saline-alkali stress on the growth and development of corn, and can stably improve the growth indexes of corn such as plant height, stem diameter, fresh weight, dry weight, leaf area index and chlorophyll content in different saline-alkali degree plots, and continuously promotes the growth in the whole growth period of corn, especially promotes the grain fresh weight in the late growth period, which is beneficial to yield formation. Meanwhile, the different strains in the compound microbial preparation have good interaction ability, can play the synergistic effect of multiple bacteria and functional complementary effect, and further improve the adaptability and growth promoting effect of the microbial preparation in the complex soil environment. The application has the advantages of environmental friendliness, low cost, difficulty in producing drug resistance and the like, and has a good application prospect in the fields of agricultural yield increase in saline-alkali land and development of microbial fertilizers.

The invention discloses application of gold nanoclusters in improvement of salt tolerance of cotton. According to the application, a solution containing the L-gold nanoclusters and / or the D-gold nanoclusters is applied to cotton roots or leaves. The concentration of the L-gold nanocluster in the solution is 0.001 to 0.01 mM; or in the solution, the concentration of the D-gold nanocluster is 0.003 to 0.008 mM. The gold nanocluster can well improve the fresh weight of the cotton under salt stress, can improve the chlorophyll content and photosynthesis of the cotton under salt stress, and can improve the oxidation resistance of the cotton under salt stress.

This invention discloses a method for establishing a spectral characteristic database of trees affected by wood nematode, involving the interdisciplinary fields of forestry disease monitoring, spectral analysis, and database technology. By capturing subtle spectral changes in pine needles in the red and near-infrared bands, this invention can identify signs of infection before obvious symptoms appear on the tree's surface. Through a multi-step, multi-index comprehensive analysis method, it effectively eliminates interference from other ground features such as forest land and bare soil. The established dedicated spectral model and indices are highly targeted, achieving higher classification and identification accuracy than using a single general index, significantly reducing the false positive rate. The use of UAV hyperspectral remote sensing technology overcomes the shortcomings of manual inspection, such as limited coverage, numerous blind spots, and poor timeliness, enabling rapid and comprehensive monitoring of large-scale pine forest resources. It can not only determine whether pine trees are infected but also quantitatively assess the severity of the disease through chlorophyll content estimation models and spectral characteristic differences.

The invention belongs to the technical field of biology, and particularly relates to Dendrobium officinale DoORP1 protein and a coding gene and application thereof. The invention discloses a Dendrobium officinale DoORP1 protein, which comprises a protein composed of an amino acid sequence as shown in SEQ ID NO.6, and a protein which is subjected to substitution and / or deletion and / or addition of one or more amino acid residues, is related to plant drought tolerance and is derived from the Dendrobium officinale DoORP1 protein. The invention finds that overexpression of the gene coding the DoORP1 protein enables an overexpression strain to show stronger tolerance under salt stress of a plant, and the overexpression strain specifically shows that the root is longer in a seedling stage and the chlorophyll content is higher in a growth stage. Under drought stress, the overexpression strain also shows stronger tolerance, and compared with a wild type, the overexpression strain has the advantages that the root length in the seedling stage is increased, and the survival rate in the growth stage is higher.

The invention relates to a broccoli early rice rotation analysis method and system based on multi-source data fusion, electronic equipment and a computer readable storage medium, and the method comprises the steps: obtaining multi-source data of a target field area, and carrying out the preprocessing, positioning and calibration of a field multi-view image and soil PH value detection data; and generating a soil PH value thermodynamic diagram through spatial superposition fusion and an interpolation algorithm. On the basis, a PH stress area is identified, and spatial consistency analysis is carried out on the PH stress area and a chlorophyll content diagram obtained through multispectral image inversion, so that the health degree of the crop root system is evaluated. Then, a growth model with the soil PH value, the root system health degree and the multispectral and thermal infrared image features as input is established, and key parameters such as the plant nitrogen content, the leaf area index and the water stress index are quantitatively inverted by means of the predefined PH-root system-canopy physiological response relation. And finally, quantitative analysis of economic, ecological and agronomic benefits is carried out based on inversion parameters, and a comprehensive crop rotation benefit report is generated.

The application discloses a kind of cadmium stress under rice chlorophyll content estimation method and system, method includes the following steps: collecting the spectral image of different cadmium concentration under different varieties different growth stages under rice leaf and measuring chlorophyll content;Extract the spectral reflectance of rice leaf spectral image;Pretreatment is carried out;According to different varieties and different growth stages, spectral characteristic band screening is carried out respectively;According to proportion, it is divided into training set and test set;Chlorophyll content prediction model is established;On training set, the prediction model is trained respectively, and after training, the prediction model is tested using test set respectively;Performance verification is carried out during training and testing process, and the final prediction model is obtained;The spectral image of the rice leaf to be measured is input into the final prediction model to predict chlorophyll content.The present application is based on hyperspectral technology and machine learning to quantitatively measure the chlorophyll content of rice under Cd stress, to realize the non-destructive, rapid and accurate online estimation of chlorophyll content under Cd stress.

The present invention relates to a process for removing chlorophyll present in plant extracts, in particular natural plant extracts used for cosmetic purposes and obtained by alcoholic extraction; it also relates to plant extracts with reduced chlorophyll content obtained by this process.