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42 results about "Field population" patented technology

Method for reproducing paphiopedilum armeniacum

The invention relates to a method for reproducing paphiopedilum armeniacum. The method comprises the steps of carrying out field planting on adult plants of the paphiopedilum armeniacum, carrying out artificial pollination when the paphiopedilum armeniacum flowers, marking the time of pollination and seeding by using capsule seeds of the paphiopedilum armeniacum of 90-110 days after the pollination. In recent years, field populations of the paphiopedilum armeniacum are excessively collected, seriously damaged and endangered and problems of protection and commercial development are needed to solve through artificial breeding method. According to the invention, aiming to solve the problem that the paphiopedilum armeniacum seed is more difficult to sprout after maturing, methods of seed morphological characteristic observing and aseptic germination are utilized to confirm that the seed germination rate is highest when the seed blastocyte morphological characteristic is shown as ellipsoidal embryogenesis and the suspensor presents a character of 2-3 cellular components in linear arrangement after 90 days after the pollination of the paphiopedilum armeniacum, therefore, the method disclosed by the invention has the advantages that optimal germination time of the seeds of the paphiopedilum armeniacum can be confirmed and technological basis is established for the building of a high-efficiency artificial reproduction technical system of the paphiopedilum armeniacum.
Owner:KUNMING INST OF BOTANY - CHINESE ACAD OF SCI

Method and special primer of method for fast identifying plutella xylostella ryanodine receptor gene mutation

InactiveCN102952889ATimely adjustment of prevention and control strategiesHigh sensitivityMicrobiological testing/measurementDNA/RNA fragmentationAgricultural scienceOpen reading frame
The invention discloses a method and a special primer of the method for fast identifying the plutella xylostella ryanodine receptor gene mutation. The invention provides a specific primer combination, which consists of a single chain DNA (deoxyribonucleic acid) molecule shown as a sequence 1 of a sequence table, a single chain DNA molecule shown as a sequence 2 of the sequence table and a single-chain DNA molecule shown as a sequence 3 of the sequence table. The specific primer combination can be used for the following (a) or (b): (a) the specific primer combination can be used for identifying whether plutella xylostella generates the G4899E mutation of the ryanodine receptor gene or not, and the G4899E mutation of the ryanodine receptor gene refers to that an open reading frame of the ryanodine receptor gene is mutated into A from G in the 14696 locus nucleotide of the 5' tail end; and (b) the specific primer combination is used for the auxiliary identification of the resistance of plutella xylostella on bisamide pesticides. The specific primer combination and the application of the specific primer combination have the important significance in the aspects of monitoring the resistance gene frequency of plutella xylostella field populations on the bisamide pesticides and the bisamide pesticide resistance generation and development trend of the plutella xylostella field populations, timely regulating the plutella xylostella preventing and control strategy, guiding the reasonable pesticide use and delaying the resistance development.
Owner:CHINA AGRI UNIV

Apolygus lucorum vitellogenin and specific peptide chain, vector, strain and application thereof

InactiveCN104711265APredicting Outbreak PotentialBacteriaMicroorganism based processesVitellogeninsWestern blot
The invention discloses a DNA sequence used for encoding apolygus lucorum vitellogenin. The invention further discloses a specific peptide sequence capable of detecting an AlVg protein expression level by using Western-blot, and the expression difference of AlVg in apolygus lucorum on the protein level is analyzed by utilizing the specificity of the polypeptide. The invention further constructs an atlas of age in days after female adult eclosion and AlVg expression trend. The correlation of AlVg genes and protein expression levels in female adults with single female fecundity is investigated after the female adults are continuously bred on a variety of host plants, in order to construct a related prediction model, which has significant importance on prediction of the spawning potential of the apolygus lucorum. a positive correlation relation between the AlVg expression levels of female apolygus lucorum adults and the single female fecundity after eclosion for 7 days is defined. The specific peptide sequence disclosed by the invention can be used for observing and predicting the population dynamics of the apolygus lucorum in fields, and providing a foundation for research and development of new technology for monitoring field populations of the apolygus lucorum.
Owner:JIANGSU ACADEMY OF AGRICULTURAL SCIENCES

Molecular detection method of resistance of diamond back moth against avermectin target

The present invention discloses a molecular detection method of resistance of diamond back moth against an avermectin target. According to the method, a specific primer designed according a diamond back moth glutamate chloride ion channel gene sequence is used, extracted diamond back moth single-head genomic DNA is used as a template for PCR amplification of glutamate chloride ion channel gene fragments, diamond back moth individual genotypes (sensitive homozygote SS, resistant heterozygote RS and resistant homozygote RR) can be distinguished by analysis of a target fragment purified product direct sequencing chromatogram, and population sample resistance allele mutation frequency can be detected. A detection method of diamond back moth glutamate chloride ion channel gene A309V mutation and a special primer sequence are disclosed, and the method has the advantages of being simple, rapid and high in accuracy, can be used to monitor the occurrence and development trend of allele frequency of the resistance of a diamond back moth field population against avermectin and drug resistance, and provides an important basis for adjustment of diamond back moth chemical control strategies and formulation of measures to delay the development of resistance.
Owner:NANJING AGRICULTURAL UNIVERSITY

CAPS marking method for detecting avermectin resistance related gene mutation of spider mites

The invention discloses a CAPS marking method for detecting avermectin resistance related gene mutation of spider mites. Spider mite population GluCl3 gene to be detected which contains a gene fragment with G326E mutation is amplified, and enzyme sites are analyzed, wherein a Hinf I enzyme site exists in the amplified fragments of the sensitive population, and the site does not exist in the resistance homozygosis population, amplified fragments containing the Hinf I enzyme site exist in the resistance heterozygosis population, and amplified fragments without the site exist in the resistance heterozygosis population. The method can be used for replacing traditional biological assay methods, and has the advantages of little manpower and few sample amounts, large detection quantity, high sensitivity, good specificity, rapid and simplicity, and accuracy and reliability; the method is suitable for rapid diagnosis of avermectin resistance of Tetranychus urticae field population, and is usedfor carrying out real time monitoring and early warning forecast of avermectin resistance of field spider mites at the same time; the method has important meaning for avermectin resistance monitoringof field spider mites, and application prospect is wide.
Owner:INST OF VEGETABLE & FLOWERS CHINESE ACAD OF AGRI SCI
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