321 results about "Rhizoctonia" patented technology

The invention discloses a streptomyces corchorusii strain NF0919, which is collected in China General Microbiological Culture Collection Center, and has the collection number CGMCC No. 3968. The strain can be used for preventing and treating rhizoctonia cerealis, rice false smut, rice sheath blight disease and other various plant diseases.

The invention discloses bacillus subtilis S001 capable of inhibiting a variety of pathogens and further discloses a microbial preparation prepared from the bacillus subtilis S001 and a preparation method the microbial preparation. The bacillus subtilis S001 with the collection number of CGMCC No.6425 has the function of promoting growth and inhibiting pathogens including the fusarium, pepper rhizoctonia solani, tomato leaf mold, tomato early blight pathogen, tomato grey mold, eggplant sclerotia pathogen, wheat full-rotting pathogen, wheat root rotting pathogen and wheat sheath blight pathogen. The microbial pesticides and microbial fertilizers prepared from the bacillus subtilis S001 are environmentally-friendly and have good safety, and pathogens can not resist the microbial pesticides and the microbial fertilizers easily.

Disclosed herein is a method for increasing the production of crops, particularly wheat and soybean, using herbicide resistant cultivars. In one aspect of this method, the method increases crop yield by diminishing the impact of the root diseases caused by Gaeumannomyces and Rhizoctonia species by treating the crop with an herbicide, in particular glyphosate. In another aspect the method for treating crops reduces the effects foliar pathogens and diseases, particularly fungal pathogens, such as rusts, including soybean rust, stem rust, stripe rust and leaf rust.

The invention discloses Burkholderia pyrrocinia of which the classification name is Burkholderia pyrrocinia. The strain number is LWK2, the Burkholderia pyrrocinia is preserved in the China center for type culture collection (CCTCC), the preservation number is CCTCC NO: M 2016007, and the preservation date is January 5, 2016. The invention further discloses application of the Burkholderia pyrrocinia in cercidiphyllum japonicum growth promotion. The LWK2 strain has the strong potassium decomposing capacity and auxin secretion capacity and can obviously promote germination of cucumber seeds; when an LWK2 bactericide is inoculated to a cercidiphyllum japonicum seedling, the result shows that the bactericide can obviously promote growth of the cercidiphyllum japonicum seedling. Meanwhile, the strain has a certain antagonistic effect on phytopathogen such as pyticularia oryzae, cytospora chrysosperma, fusarium oxysporum, riziocotinia solani and rhizoctonia.

The invention provides a sterilization composition comprising the following active components with effective quantity: flutolanil and one of triazole class compounds of hexaconaole, ethyltrianol, diniconazole, triazolone, triadimenol, epoxiconazole, fluquinconazole, flusilazole, systhane, penconazole, tetraconazole, biphenyl triadimenol and cyclopropyl hexaconazole. The composition can be used forpreventing and treating diseases caused by rhizoctonia and has the following advantages: (1) mixed matching has an obvious synergistic action, and the preventing and treating effect is enhanced; (2)the function mechanisms of two active components in the composition are different, the single selection pressure of pathogenic bacteria is lightened, and the composition is beneficial to overcoming the generation of the drug resistance of the pathogenic bacteria and delaying the generation speed of resistibility; (3) the preventing effect is obviously enhanced after the medicaments are mixed and matched, and the use quantity of the effective components is reduced, thereby the cost is lowered and environmental pollution is lightened; and (4) preventing and treating spectra are expanded, the composition also has a treating function to other diseases, and can treat multiple diseases.

The invention discloses a PCR (polymerase chain reaction) primer capable of simultaneously detecting five soil-borne fungal diseases of wheat paddock, wherein the sequence of the rhizoctonia solani primer is as follows: an upstream primer P1: 5'-TCCTCCCGCTTATTGATATGC-3'; and a downstream primer P2: 5'-CGGTTGAGCTGGGTCTTTTA-3'. A multi-PCR detecting system built by the invention can simultaneously detect the five pathogenic funguses such as rhizoctonia cerealis, gaeumannomyces graminis, fusarium graminearum, fake fusarium graminearum and bipolaris sorokinianum. The size of an amplified product segment disclosed by the invention is accordant with an expected result, and five pairs of the primers only can be generated aiming at the target specific stripe and the non-specific stripe, so that the five pathogenic funguses can be well distinguished from one another. The PCR primer is convenient and quick: a sample can be prepared and detected within four hours, and the five pathogens such as the rhizoctonia cerealis, the gaeumannomyces graminis, the fusarium graminearum, the fake fusarium graminearum and the bipolaris sorokinianum can be simultaneously detected; the PCR primer is high in sensitivity: 0.39ng of a pathogen DNA (deoxyribonucleic acid) sample can be detected: and the PCR primer is exact: compared with the conventional separation identifying and symptom identifying method,the PCR primer is higher in the accuracy of the detecting result.

The invention discloses ectomycorrhizal helper bacteria bacillus pumilus HR10. The classified nomenclature of the ectomycorrhizal helper bacteria bacillus pumilus HR10 is bacillus pumilus, the bacillus pumilus is preserved in CCTCC, the collection number of the bacillus pumilus is CCTCC No: M 2010143 and the preservation date is June 12th, 2010. The bacillus pumilus HR10 is plant growth-promoting rhizobacteria, has direct promoting effect on black tree growth and can promote the growth of rhizipogen luteous of ectomycorrhizal fungi; double inoculation of the bacillus pumilus HR10 and the rhizipogen luteous has obvious growth-promoting effect on pinus thunbergii parl; the bacillus pumilus HR10 has inhibiting effect on pathogenic rhizoctonia of pine nursery stock damping-off disease; and greenhouse preventing and controlling experiments show that the bacillus pumilus HR10 strains can effectively prevent and control the pine nursery stock damping-off disease.

The invention provides crop growth promoting antagonistic trichoderma, in particular to Trichoderma atroviride H18-1-1 and TF28 with preservation numbers of CGMCC No.9774 and 9775 and aims to solve the problem that using agricultural chemicals for preventing and treating agricultural diseases is prone to causing environment pollution and agricultural chemical residues, jeopardizing an agricultural ecological system, killing beneficial microorganisms in the environment, improving drug resistance of phytopathogen and finally causing decline of prevention and treatment effects and even failure in prevention and treatment. The trichoderma not only can be applied to agricultural biological prevention and treatment but also can promote growth of crops such as wheat and prevent and treat diseases caused by rhizoctonia cerealis, fusarium culmorum, fusarium proliferatum and / or fusarium oxysporum and the like.

The invention relates to a synthesis method of 5, 7, 4'-trihydroxy-3', 5'-dimethoxyflavone and application thereof, particularly to a chemical synthesis method of allelochemicals, 5, 7, 4'-trihydroxy-3', 5'-dimethoxyflavone, by separating from allelochemical rice, Oryza sativa L.(PI312777). Syringic acid and phloroglucinol are used as the raw materials, the object products are synthesized by four steps. The products are protected by benzyl, and benzyl is synchronously removed with glacial acetic acid heating and ring closing in the final reaction step, thereby reducing the reaction steps. Compared with the method of removing benzyl by Pd / C charging hydrogen, the method of the invention is more simple, economical, and safe. The invention is capable of effectively stopping growth of garnyardgrass, cyperus iria linn and cyperus difformis linn seeds in rice, restraining paddyfield weed, improving rice yield, stopping spore germination of pyricularia oryzae and rhizoctonia solan so as to avoid the problems due to pesticide application and promote sustainable development of agriculture.