412 results about "Leaf lamina" patented technology

The invention relates to the technical field of ecology and hydrology, in particular to a terrestrial ecosystem water carbon flux estimation method considering water balance constraint, which comprises the following steps: estimating leaf scale photosynthetic rate and stomatal conductance by utilizing a photosynthesis model; the leaf scale photosynthetic rate and the stomatal conductance are upscaled into canopy vegetation total primary productivity and canopy conductance to construct an evapotranspiration model to estimate evapotranspiration data; constructing a water balance model according to the evapotranspiration data so as to estimate the available water amount of the soil; constructing a soil moisture stress function according to the available water amount of the soil so as to constrain the estimation process of the photosynthesis model and the evapotranspiration model; and acquiring historical water-carbon flux data and historical remote sensing observation data of a long sequence daily scale, and calibrating the model to obtain a water-balance-constraint-considered water-carbon flux estimation model of the terrestrial ecosystem capable of estimating the water-carbon flux data. Therefore, the problems that an existing water carbon flux prediction frame is difficult to adapt to climate changes, low in prediction accuracy and the like are solved.

The invention discloses a monitoring method and system for identifying crop drought based on leaf morphology, and relates to the field of agricultural drought monitoring, and the method comprises the following steps: selecting a completely unfolded healthy leaf, cleaning with ultrapure water, blow-drying with nitrogen, and fixing on a standard objective table to obtain a standardized leaf sample; based on the standardized leaf sample, a high-resolution scanner is used for obtaining a front gray image and a back gray image of the leaf, and a binary image with a clear vein network is obtained through image splicing and binarization processing; skeletonizing the binary image with the clear vein network, and calculating the vein fractal dimension by adopting a box counting method to obtain a fractal dimension change rate; the method is in a fixed detection area of a standardized leaf sample. Through innovative leaf vein fractal dimension analysis and contact angle dynamic measurement, a crop drought monitoring system is constructed, and in the aspect of leaf vein analysis, skeletonization processing and a box counting method are adopted to realize accurate quantification of a leaf vein network topological structure.

The invention relates to the technical field of photosynthetic carbon sequestration, in particular to a photosynthetic carbon sequestration data real-time monitoring system and method, and the system comprises an evapotranspiration gradient recognition module, a photosynthetic rate change capture module, a non-cooperative state judgment module, a carbon sequestration fluctuation trajectory extraction module and a monitoring stability output module. According to the method, the response time point of the evapotranspiration process to the illumination change is dynamically positioned by obtaining parameters such as stomatal conductance, leaf surface temperature, saturation vapor pressure difference and transpiration rate of a leaf layer, the time point of sudden change of the physiological activity is marked, and the change of the transpiration rate and the change of the net photosynthetic rate are compared according to the difference range between the change of the net photosynthetic rate and the change of the transpiration rate. According to the method, the non-collaborative evapotranspiration function state can be judged, the possible response imbalance situation between leaf photosynthesis and moisture adjustment can be effectively recognized, the recognition capacity for the dysfunction time period is enhanced, the time window with low output stability is screened, and the dynamic adaptability and abnormal response judgment capacity of carbon sequestration monitoring data are enhanced.

The invention relates to the technical field of molecular markers, in particular to an Indel molecular marker related to yellow leaves of a melon seedling growing point and application of the Indel molecular marker. The invention explores a key candidate gene MELO3C016136 for controlling the leaf color of the growth point of the muskmelon seedling, and develops an Indel molecular marker ygp2 for identifying the leaf color change of the growth point of the muskmelon seedling based on the key candidate gene MELO3C016136. The molecular marker ygp2 can be used for identifying the leaf color change character of the growth point of the muskmelon seedling, only one-time PCR amplification and polyacrylamide gel electrophoresis need to be carried out on the DNA of the plant to be detected, the identification result is reliable, the genotype of the target plant can be simply and conveniently identified, and the genotype identification result is completely consistent with the leaf color phenotype of the growth point of the seedling; important technical support is provided for creating new muskmelon germplasm with yellow seedling growing point leaves.

The invention relates to the technical field of image acquisition, in particular to an insect pest image acquisition method for vegetable insect pest prevention and control, which comprises the following steps: accurately extracting a single leaf in a leaf image through vein features of vegetable leaves, and obtaining a complete leaf and a sheltered leaf; then determining an insect pest gnawing area in the single leaf based on color characteristics of leaf meat in the single leaf and continuity of leaf veins; based on the number and area characteristics of pest gnawing areas, the pest gnawing degrees of the complete leaves and the sheltered leaves are quantified; and finally, according to different gnawing degrees of insect pests, different image acquisition modes are adopted for different leaves. By means of the method, more accurate positioning and collection of the pest gnawing area can be achieved, detection errors caused by leaf shielding in a traditional method can be avoided, and more targeted data support is provided for follow-up pest gnawing degree evaluation and prevention and control scheme making through dynamic allocation of resources.

The invention belongs to the technical field of crop disease and insect pest recognition, and particularly discloses a crop disease and insect pest recognition analysis method based on image processing, and the method comprises the steps: collecting a state image of a plant in a dynamic environment, and eliminating the interference of the dynamic environment on the state image recognition of a plant leaf; differentiated analysis is carried out on disease and insect pest characteristics of different areas corresponding to each leaf area, so that leaf disease and insect pest types and defect data thereof are accurately identified; the color value distribution health state of leaves near a leaf vein distribution area is detected by simulating the leaf vein distribution contour of the interference area, the corresponding leaf vein structure stability of each leaf area is analyzed, and the leaf state of the remaining area after the interference area and the pest and disease damage area of the leaves are removed is identified. And assisting in evaluating the leaf risk area condition in each leaf area, and judging the pest and disease damage state in the plant leaf according to the condition. The recognition precision of the crop state image is improved, and targeted prevention and control measures can be taken.

The invention relates to the technical field of plant genetic engineering, in particular to a transcription factor CsKNAT1 and application thereof in regulation and control of development of tea trees. The nucleotide sequence of the gene is as shown in SEQ ID NO: 1, and the sequence of protein coded by the gene is as shown in SEQ ID NO: 2. Research finds that overexpression of the CsKNAT1 gene can influence the form of plant leaves: the edges of the leaves are promoted to have notches (asymmetric leaves are formed, resulting in increase of sawteeth at the edges of the leaves); the formation of compound leaves can be promoted; leaves on plant stems can grow in a rosette form, and secondary stems are bolted in the middles of rosette leaves; the research also finds that the overexpression of the CsKNAT1 gene can obviously influence the flowering phase and the flower form of the plant; the delay of the flowering phase is promoted; overexpression of the CsKNAT1 gene can further influence development of floral organs and formation of siliques, part of arabidopsis plants have phenotypes that corolla becomes small, stamens are exposed, petals gradually extend and are zigzag in a wavy shape, the length of mature siliques is remarkably shortened by 20%-36.1%, and the phenomenon that the fruits are aborted occurs.

An MLC is provided, the MLC includes: a plurality of leaves; first driving mechanisms connected to the leaves and configured to drive the leaves to move to form a radiation field; and at least one leaf head mechanism mounted on at least one corresponding leaf of the leaves and configured to adjust the radiation field.

The invention discloses application of an MsMYB-ZD gene in regulating and controlling the leaf size and yield of medicago sativa, and belongs to the technical field of plant genetic engineering. According to the invention, an MsMYB-ZD transcription factor for regulating and controlling the leaf size of medicago sativa is cloned by using transcriptome analysis; experimental data show that the MsMYB-ZD gene presents a gradually up-regulated expression mode in a leaf development process; compared with wild alfalfa Gongnong No.1 1-16 single plants, the leaf area of the overexpressed MsMYB-ZD transgenic single plant is averagely enlarged by 77%, and the expression quantity and the leaf area of the transgenic line show a remarkable positive correlation relationship; the fresh grass yield of a transgenic single plant is increased by 158.7%, and the hay yield of a single plant is increased by 207.5%. The results show that the gene has important significance for improving the yield of medicago sativa.

The invention relates to the technical field of genetic breeding, and provides a BcKH14 gene for regulating and controlling growth of leaf epidermal hair of black cabbage, and the nucleotide sequence of the BcKH14 gene is as shown in SEQ ID NO.1. The invention also provides an overexpression vector containing the gene and a genetically engineered host cell. In addition, the invention also provides application of the gene in cultivation of a new variety of multi-epidermal black cabbage, and a method for promoting development of epidermal hair of black cabbage leaves. According to the invention, the key gene BcKH14 related to epidermal hair development is screened from the black cabbage, and the gene is over-expressed in an arabidopsis thaliana plant, so that the positive regulation of the gene on the epidermal hair of the leaf of the black cabbage is verified, the growth of the epidermal hair of the leaf of the plant can be promoted, and a foundation is laid for cultivating a new variety of the black cabbage with multiple epidermal hair; the method has important value for improving the stress resistance and disease and pest resistance of the black cabbage.

The embodiment of the invention provides a ray beam collimation system, and relates to the technical field of medical equipment. The ray beam collimation system comprises a primary collimator and a multi-leaf collimator. The primary collimator is provided with a through hole with a fixed shape and size, and the through hole is matched with the multi-leaf collimator in shape and size. And the primary collimator is positioned below the ray source and above the multi-leaf collimator. The multi-blade collimator comprises at least two blade groups composed of a plurality of blades, the tail end of each blade is provided with a concave-convex part, the concave-convex part comprises a plurality of first protrusions arranged at intervals in the first direction, a first recess is formed between every two adjacent first protrusions, the at least two blade groups comprise two blades opposite in the second direction, and the first protrusions are arranged at intervals in the first direction. The first protrusion of one of the two opposite blades is used for being connected with the first recess of the other blade in an inserted mode. The ray beam collimation system provided by the embodiment of the invention has the benefits that leakage rays between the tail ends of the blades are shielded, and the irradiation space of a patient in radiotherapy is increased.

The invention discloses application of a PdePin1At protein and a coding gene thereof in regulation and control of a plant tree form. According to the invention, a transgenic poplar with reduced PdePin1At gene expression quantity is constructed by using a microRNA interference technology, and experiments prove that compared with a wild poplar, the leaf area, the leaf width, the leaf length, the branch included angle, the petiole length and the phyllotactic angle of the transgenic poplar are reduced, and the number of leaves / stem nodes is increased. The method is of great significance to molecular mechanism and theoretical research of regulating and controlling poplar tree forms, leaf shapes and quantity, branch angles and phyllotaxis, and is of great guiding significance to directional cultivation of trees with tree forms meeting actual production requirements. Under the condition that the plant height is not changed, the number of leaves of newborn organs can be increased, so that the number of photosynthetic organs is increased; and by changing the included angle of the branches, sunshine shielding can be reduced during close planting of the forest trees. Therefore, the method also has important guiding significance on agricultural production.

This invention discloses a plant-based carrier material, its preparation method, and its application in skincare products. The plant-based carrier material is a powder of leaves from a Lamiaceae plant with an internal porous structure. This porous structure gives the material a good loading capacity and allows it to adsorb and slowly release small molecule liquid components. The preparation process of this carrier material is simple and mild. Furthermore, the Lamiaceae plant leaf raw material has antibacterial, antioxidant, and anti-inflammatory effects, making it suitable as a mask carrier. The cleansing mask obtained using this material as a carrier has excellent oil control and skin cleansing effects.

The invention belongs to the field of long-stalked gynostemma pentaphyllum cuttings and provides a long-stalked gynostemma pentaphyllum cutting method and a cultivation device thereof. The cutting process comprises: selecting healthy and sturdy middle and upper stem segments of long-stalked gynostemma pentaphyllum in a planting field, placing the segments in a tray or a basket, and storing them in a cool and shady environment; retaining two nodes on each cutting, cutting ends 1.5-2 cm apart from the upper and lower nodes, removing leaves and tendrils on the lower nodes, retaining a compound leaf on the upper portion, and preventing leaves and stems from being broken during the operation; then fixing the cut cuttings in a container with a water matrix, arranging them in order, separating rows with partitions, and ensuring that the water matrix is ​​10 cm deep, keeping the lower nodes 2-3 cm in the water matrix, transplanting 1000 cuttings per square meter, and using a sunshade net with a 50% sunshade rate for sunshade. This method uses water as the matrix, has a high survival rate of cuttings, does not require other matrices such as peat, is easy to obtain, has little pollution, and has a propagation efficiency that is more than 5 times that of other methods. It significantly reduces labor costs and is conducive to the rapid propagation of long-stemmed Gynostemma pentaphyllum.

The invention discloses a fertilization method and system for improving CO2 absorption efficiency of greenhouse plants based on an SPAC system. The method comprises the following steps: acquiring moisture information and environment information of the greenhouse plants through a biological environment information acquisition module deployed in a greenhouse; according to the obtained moisture information and environment information, the current leaf water potential and the saturation vapor pressure difference are calculated; calculating the stomatal conductance of the plant by combining the soil water potential and the atmospheric pressure according to the calculated current leaf water potential and saturation vapor pressure difference; and regulating and controlling water and CO2 fertilization of the greenhouse plants according to the stomatal conductance of the plants. By means of the method, under the condition that the evaporation intensity is too high, plant water stress can be weakened, stomatal opening is promoted, stomatal conductivity and mesophyll conductivity are improved, CO2 absorption and utilization are promoted, the photosynthesis efficiency of greenhouse fruits and vegetables can be effectively improved, and plant growth and yield formation are promoted.

The application discloses a method for making ornamental plant leaves into skin-friendly artware after artificial posture setting treatment and a preparation method thereof, and comprises the following steps: 1) pretreatment, 2) enhancement treatment, 3) coloring, 4) leaf shaping, and 5) combination. The plant which is originally soft, not enough to stand upright and difficult to shape is reinforced by a preservative and polyethylene material, so that the thickness of the leaf vein is increased from 2 mm to 3 mm, and the treated plant leaves have gloss and high flexibility. The plant leaf artware is skin-friendly and environment-friendly, and is beneficial to resource reuse. The plant leaf artware has high practicability in the field of decoration and environment-friendly products.

A new black locust tree ‘OBE TSZM’ particularly distinguished by elliptic leaves with an obtuse apex; bodkin like thorns; straight, pinnate growth habit; and blooms profusely and is a useful bee pasture, well-liked by beekeepers, is disclosed.

The application discloses application of a PHB9 gene in regulating rice leaf morphology and belongs to the technical field of genetic engineering.The CDS sequence of the PHB9 gene is shown as SEQ ID NO.2.It is found through experiments that overexpression of the PHB9 gene increases leaf length and leaf width, and the PHB9 gene has a significant effect on regulating rice leaf morphology.Further, changes in vascular systems, mitochondria and chloroplast structures in the internal structure of the leaf are analyzed, and it is shown that the vascular systems, mitochondria and chloroplast structures change when the leaf morphology is regulated, and the morphological changes in the internal structure of the leaf affect the changes in the leaf phenotype, and have a significant influence on improving the photosynthetic rate of the leaf.It is also found that overexpression of the PHB9 gene reduces the sensitivity of rice seeds to ABA, promotes seed germination and root growth.The application provides a new gene for breeding of leaf morphology building, root development and seed germination.

The invention discloses a blackberry RubHLH1 gene as well as an expression protein and application thereof, and belongs to the technical field of plant genetic engineering. The nucleotide sequence of the blackberry RubHLH1 gene provided by the invention is as shown in SEQ ID NO. 1, and the amino acid sequence of expressed protein is as shown in SEQ ID NO. 2. The RubHLH1 gene is genetically transformed into arabidopsis thaliana, and a RubHLH transgenic arabidopsis thaliana plant shows a plurality of beneficial characters compared with a wild type plant at the same growth time, including that the stem length is fast and thick, the SPAD value is high, and podding is carried out in advance; wherein stem segments and petiole epithelium spines of the bHLH-3 strain are more than those of a wild type, the leaf surface is more shrunk, and the number of pores is large. The activities of POD, SOD and CAT and the contents of MDA, H2O2, total phenols and flavonoids in a transgenic plant are higher than those in a CK contrast. The invention provides an efficient gene resource and a molecular tool for cultivating excellent transgenic plant varieties by using a molecular breeding means.

The variety ‘LULU’ is a cultivar of the Dracaena deremensis plants. It can reach 66 cm height in a 21 cm diameter pot, with an average of approximately 40-46 leaves per plant. The arrangement of the leaves is a rosette disposition wrapped around the stem. Shows a dark green colored foliage in lower leaves, and a light green in the upper leaves.

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 present invention discloses a chlorophyll hyperspectral inversion method based on a curled plant leaf radiation transmission model. The method is as follows: 1. For the curled leaf to be measured, the hemispherical reflectance spectrum DHR and the hemispherical transmission spectrum DHT are measured. The three-dimensional point cloud data of the curled leaf is collected. 2. The leaf structure parameters, leaf surface roughness, leaf average refractive index and leaf chlorophyll absorption coefficient of the curled leaf are obtained. 3. Based on the three-dimensional point cloud data, the spatial geometric model of the curled leaf is obtained. 4. The spatial geometric model of the curled leaf is spectrally simulated. 5. Chlorophyll concentration is inverted. The present invention takes into account the influence of the spatial morphology of the curled leaf on the multi-angle spectral simulation and the chlorophyll hyperspectral inversion results, improves the accuracy of chlorophyll inversion, and can obtain a high-precision canopy radiation transmission model based on this.

A new Scaevola plant named ‘SVAZ0011’, particularly distinguished by its large pink flowers with white-green eyes, continuous and an abundant flowering response, medium green foliage, a vigorous densely spreading and trailing growth habit with excellent branching and heat tolerance.

A new cultivar of Sedum plant named ‘PPC093’ that is characterized by its short plant height, its mature foliage that is purple in color, and its flowers that are yellow and grey-purple in color.

The invention relates to the related technical field of crop irrigation, in particular to a high-temperature-resistant and drought-resistant intelligent precise spraying device which comprises a bearing seat, a water supply unit, a stand column, a bearing frame, a spraying unit, an L-shaped bearing column, a redirection unit and a leaf turning execution unit. Through the synergistic effect of active plant turning and intelligent redirection spraying, the problem that an anti-evaporation agent is difficult to act on the back faces of leaves is solved. The leaf turning execution unit gently turns up the top canopy layer of the cotton through the unique movement mode that a leaf pushing plate ascends firstly and then turns over, air hole dense areas on the back faces of leaves are accurately exposed, an intelligent avoiding mechanism is arranged in the leaf turning execution unit, and it is guaranteed that crops are not damaged in the turning process. And meanwhile, the redirection unit captures the falling medicament, the direction of the medicament is changed into lateral upward spraying by utilizing airflow, and the medicament is deeply atomized through a dual physical crushing mechanism, so that the medicament can be uniformly attached to a target area in the form of tiny liquid drops.

Installation (1) for removing leaves (21) from stems (20) of plants (22) comprising a defoliating station (2) with an inlet (3) of plants to be defoliated and an outlet (4) of defoliated plants and a system (5) for holding plants (22). The station (2) comprises one or more pairs of cavities (61, 62). The cavities (61, 62) of a pair of cavities are mounted to move between a position close to and a position far apart from each other. When close to each other, said cavities (61, 62) are mounted, over at least part of their travel, to move along a straight-line defoliation direction (D). When close to each other, said cavities (61, 62) form a succession of through orifices (7), each closed around its periphery. The succession of orifices (7) is arranged along a line (L1) transverse to the defoliation direction (D). Figure for the abbreviation: Fig. 2

This application discloses a method for systematically monitoring and evaluating the structural and functional diversity of urban forest stands. It identifies the plant type by analyzing the ratio of leaf to leaf root length among different plants, combined with pigment information of plants of the same type. The ratio of leaf to leaf root length is a prominent feature of plant leaves, and identifying this feature through binarized images is fast and accurate. However, identifying plant types solely based on the ratio of leaf to leaf root length or plant pigment information can lead to low accuracy because some plants have similar ratios, and different plants may have similar pigment information. This application combines these two features, using the ratio of leaf to leaf root length and plant pigment information to comprehensively determine the plant type, thus greatly improving the comprehensiveness of the features and increasing the accuracy of identification.

A new and distinct Dracaena plant named ‘SILINDO’ which is characterized by large, lightly spiraled foliage born on an unbranched stem, dark green foliage that is centrally striped with golden-yellow and narrowly margined with yellow-green, and the stability of these characteristics from generation to generation.

The application belongs to the technical field of health food, and particularly relates to an aquilaria sinensis leaf oral liquid and a preparation method thereof. The steps comprise the following steps: S1: taking the artificial planting aquilaria sinensis leaf, cleaning and cutting, to obtain clean raw materials; S2: spraying purified water to the raw materials, adjusting humidity, and uniformly watering in a closed state, to obtain humidified leaves; S3: steam short-time high-temperature treatment of the humidified leaves in a closed humid heat environment, and then cold air rapid cooling, to obtain pretreated leaves; S4: water extraction of the pretreated leaves, to obtain a water extract; S5: filtration and centrifugation of the water extract, and reduced pressure concentration, to obtain a clear concentrated solution; S6: addition of food additives to the concentrated solution, to obtain a blending solution; S7: precision filtration, sterilization and filling of the blending solution, to obtain the artificial planting aquilaria sinensis leaf oral liquid. The application adjusts humidity and wet heat pretreatment by water extraction, passivates endogenous oxidase, relaxes leaf tissue, significantly reduces enzymatic browning and sediment formation, and improves flavor coordination.