9 results about "Tree material" patented technology

This invention discloses PCR primers and identification methods for distinguishing the sex of poplar trees from five major groups and the sex genotype of the white poplar group. This invention is based on the sex-determining gene in poplar trees. FERR Genes and FERR-R Specific primers were designed for each gene, and a PCR primer set for detecting the sex of poplar trees from five different groups was finally obtained through screening. PCR detection results of poplar materials with known sex using this primer set were completely consistent with the actual poplar sex phenotype, demonstrating that the PCR primer set provided by this invention can accurately identify the sex of poplar trees from the five different groups at the molecular level, making poplar sex identification more universal. Furthermore, the specific amplification provided by this invention... FERR The primer pairs for the gene can accurately identify the sex chromosome composition of poplar species. This invention has significant application prospects in the identification of male and female sexes in the five major poplar species, molecular breeding of poplars, and the control of female tree fluff.

1. The name of the design product: peanut clip (purple tree material). 2. The use of the design product: used for clamping peanuts. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective drawing.

The invention discloses PCR (Polymerase Chain Reaction) primers and an identification method for identifying female and male genders of five-region-named poplar and gender genotypes of poplar poplar. Specific primers are respectively designed according to the sex determining genes FERR gene and FERR-R gene of the poplar, finally, the PCR primer group for detecting the sex of the five-grade poplar is obtained through screening, and the PCR detection result of the PCR primer group on the known sex poplar material is completely consistent with the actual sex phenotype of the poplar. The PCR primer group provided by the invention is proved to be capable of accurately identifying the male and female sex of the five grades of the poplar from the molecular level, so that the male and female sex identification of the poplar is more universal; in addition, the primer pair for specifically amplifying the FERR gene provided by the invention can be used for accurately identifying the sex chromosome composition of the poplar pie species. The method has an important application prospect in the aspects of sex identification of the five-part poplars, molecular breeding of the poplars, prevention and treatment of flying catkins of female plants and the like.

The invention discloses a method for collecting sieve tube overflow substances in rubber tree barks, and belongs to the technical field of sieve tube overflow substance acquisition. Rubber tree coppice shoots growing within two years are selected; a section of stem is selected from the third extension unit or the fourth extension unit, the outermost epidermis and part of the cortex layer of the bark are scraped firstly, and wiping is carried out after primary latex exudates completely; after that, scraping off the remaining part of cortex, primary phloem fiber layer and primary phloem until the secondary phloem containing the sieve tube tissue is exposed, puncturing the secondary phloem, and sucking the discharged sieve tube overflow in the secondary phloem; a V-shaped opening is upwards cut in the secondary phloem part along the punctured part, and the sieve tube overflowing matter flowing out subsequently is sucked. The method is implemented on a specific rubber tree material in a specific period, a secondary milk duct is not generated in the bark, and pure sieve tube overflow of the rubber tree can be obtained by removing the primary milk duct and the latex firstly, then obtaining the sieve tube overflow and eliminating interference of the latex in the milk duct.

The invention discloses a comprehensive evaluation method for drought resistance of camellia oleifera based on multi-dimensional indexes and application of the comprehensive evaluation method, and relates to the technical field of plant stress resistance breeding. Performing drought stress treatment on the tea-oil tree material to be tested; 27 indexes of the tea-oil tree material to be tested are measured; a membership function analysis method is combined with principal component analysis, 19 key indexes are selected, and membership function values and weight coefficients are calculated; calculating a drought resistance coefficient; calculating drought resistance comprehensive evaluation values, and sorting according to the comprehensive evaluation values; and selecting a drought-resistant variety and a sensitive variety according to the sequence, and carrying out transcriptome comparative analysis and screening to obtain a drought-resistant key gene. According to the method, multi-dimensional indexes are constructed, key indexes are screened from the indexes, objectivity of evaluation results can be guaranteed conveniently, the drought-resistant varieties and sensitive varieties with typicality can be rapidly screened out from drought-resistant sequencing, drought-resistant key genes can be conveniently obtained through screening, then the drought-resistant key genes are applied to subsequent camellia oleifera molecular breeding, and good application prospects are achieved.

A method forming a wind turbine blade includes forming a first shell of the wind turbine blade, the first shell having a first exterior side surface, a first interior side surface, and a first mating side surface connecting the first interior and first exterior side surfaces to one another, forming a second shell of the wind turbine blade, the second shell having a second exterior side surface, a second interior side surface, and a second mating side surface connecting the second interior and second exterior side surfaces to one another, and connecting the first and second mating side surfaces to one another to form the wind turbine blade. The first and second shells include date palm tree material and epoxy.

1. Name of the designed product: soil sample screening device (purple tree material). 2. Use of the designed product: for screening soil samples. 3. Design points of the designed product: in shape. 4. Picture or photo that best indicates the design points: perspective view.

1. The name of the design product: sweet potato blade (purple tree material). 2. The use of the design product: for grid potato, sweet potato cutting. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.

The invention relates to an application of a PtNPF6.4 gene in enhancing low nitrogen stress resistance of poplar, and by creating a PtNPF6.4 gene overexpression and knocking out a transgenic poplar material, the nitrogen content of a PtNPF6.4 overexpression strain under a low nitrogen stress condition is improved, and the plant height, the leaf number, the biomass and the root development are remarkably improved; meanwhile, the plant shows higher net photosynthetic rate, stomatal conductance and transpiration rate. The gene effectively promotes nitrogen absorption of the poplar under low nitrogen stress, the photosynthesis of the poplar is remarkably improved, the growth and development of the poplar are further promoted, and the low nitrogen stress resistance of the poplar is enhanced. The important function of the PtNPF6.4 gene in the aspect of remarkably improving the low nitrogen stress of the poplar is found for the first time, a theoretical basis and an excellent candidate gene are provided for efficient nitrogen breeding of forest trees, and the PtNPF6.4 gene has important theoretical and practical significance in directional breeding of artificial wood trees and accurate improvement of forest quality.