48 results about "Bipolaris maydis" patented technology

The invention relates to a 4-substituted phenyl-6-trifluoromethyl-2-amino pyrimidinamine compound which has a novel chemical structure and a general formula III, a synthesis method for the compound and the application of the compound used as bacteriacide. The method comprises the following steps of: reacting substituted phenyl methyl ketone used as an initial raw material and trifluoroacetic acid ethyl ester under catalysis of sodium alcoholate to generate 4,4,4-trifluoro-1-substituded phenylbutane-1,3-diketone, and reacting 4,4,4-trifluoro-1-substituded phenylbutane-1,3-diketone and guanidinium salt under an alkaline condition to generate a III series compound with the general formula III. The compound with the general formula III can inhibit growth of pathogenic bacteria such as rice sheath blight, rice bakanae disease, exserohilum turcicum, bipolaris maydis, curvulavia lunata, corn kernel rot, corn top rot pathogenic bacteria, fusarium graminearum, cotton anthracnose, bean fusarium, rape sclerotinia rot, botrytis cinerea, cucumber fusarium wilt pathogenic bacteria, cucumber brown rot pathogenic bacteria, cucumber scab pathogenic bacteria, hot pepper root rot pathogenic bacteria, kidney bean anthracnose bacteria, and pythium aphanidermatum. In the formula III, R is methyl, ethyl, methoxy group, fluorine, chlorine, bromine, trifluoromethyl and other groups, and the number of R is 1 to 3.

The invention belongs to the technical field of biological prevention and control of maize diseases, and discloses a maize sheath surface paenibacillus polymyxa strain and application thereof. The maize sheath surface paenibacillus polymyxa strain disclosed by the invention is paenibacillus polymyxa SF05; the strain is collected in China Center for Type Culture Collection on July 31, 2020, the collection number is CCTCC NO: M 2020384, and the collection address is Wuhan University, Wuhan, China. The maize sheath surface paenibacillus polymyxa strain can effectively inhibit the growth of rhizoctonia solani, exserohilum turcicum, bipolaris maydis and fusurium verticillioides, and can induce up-regulation of the expression level of maize disease resistance-related genes, enhances maize disease resistance, and can effectively control the maize sheath blight in production.

The invention discloses a breeding method of a waxy corn variety with high resistance against diseases and pests, belonging to the technical field of corn disease-resistant breeding. In the invention, high-yield high-quality waxy corn variety, high-resistance bipolaris maydis variety, high-resistance sphacelotheca reiliana variety, high-resistance ostrinia nubilalis variety and high-resistance puccinia polysora variety are adopted as parents; and through hybridization and backcrossing polymerization and multiple generations of seed waxiness and disease resistance identification and screening, a hybrid waxy corn variety with high resistance against 4 diseases and pests, good waxiness and excellent agricultural and yield traits is obtained.

The invention relates to two optically pure isomers of NK007 for short and applications in a bactericidal aspect. Compounds NK007-3 and NK007-4 have good bactericidal activity, can be used for treating plant bacteria diseases selected from fusarium wilt of cucumber, cercospora brown spot of peanut, apple ring spot, alternaria solani, puccinia polysora, rice bakanae disease, sclerotinia rot of colza, phytophthora capsici disease, wheat sharp eyespot, bipolaris maydis, watermelon anthracnose, potato late blight, rice sheath blight disease and cucumber gray mold.

The invention discloses a diterpene compound extracted from branches and leaves of croton. The diterpene compound comprises 12-O-Tigloylphorbol-13-(2-methy lbutyrate) and 12-O-Acetylphorbol-13-(2-methy lbutyrate). The invention further discloses the use of the diterpene compound in preparing biopesticide for killing tobacco mosaic virus and phytopathogen. Experiments prove that the diterpene compound extracted from branches and leaves of croton, including the 12-O-Tigloylphorbol-13-(2-methy lbutyrate) and the 12-O-Acetylphorbol-13-(2-methy lbutyrate), can remarkably stop tobacco mosaic virus from invasion and proliferation and restrain cucumber wilt disease fungus, wheat scab pathogen, magnaporthe grisea, thanatephorus cucumeris, bipolaris maydis, exserohilum turcicum and other phytopathogens.

The invention belongs to the technical field of pesticides and discloses a mixed medicament and application thereof to prevention and treatment of bipolaris maydis. The mixed medicament comprises active ingredients including propiconazole and iprodione in a weight ratio of 6:4. By mixing of bactericides with different function mechanisms, the novel medicament for prevention and treatment of bipolaris maydis is obtained and conducive to delaying of field drug resistance, is capable of improving prevention and treatment effects and reducing medicament consumption and utilization cost and has potential social, economic and ecological benefits.

The invention discloses a sterilization composite containing metalaxyl-M and application thereof. The sterilization composite containing metalaxyl-M comprises two active components A and B, the component A is metalaxyl-M and the component B is propineb or metiram. The composite is efficient, safe and environmentally-friendly, has synergy, can be used for increasing crop production and fruit quality and lowering cost and is beneficial to the postponement of the generation of drug resistance of harmful bacteria. The composite also can be used for preventing and controlling crop banded sclerotial blight, damping off, root rot, rice blast, exserohilum turcicum, bipolaris maydis, downy mildew, phytophthora blight, leaf spot, gray mold, alternaria leaf spot, anthracnose, ring spot, powdery mildew, Leptosphaeria maculans and late blight.

The invention belongs to the technical field of gene engineering, relates to a method for rapidly detecting pathogens by a specific primer, and in particular relates to the specific primer for rapidly detecting corn southern leaf blight and a detection method of the corn southern leaf blight. A rapid detection method of pathogens of the corn southern leaf blight comprises the following steps: (1) collecting fungal hyphae; (2) extracting fungal DNAs; (3) carrying out PCR (Polymerase Chain Reaction) amplification, wherein a PCR system is as follows: 1 microliter of a forward primer X-EF, 1 microliter of a reverse primer X-ER, 1 microliter of a DNA template, 12.5 microliters of Taq PCR Master Mix, and the balance of ddH2O which is added until the volume is 25 microliters; a PCR procedure: pre-denaturing for 3 minutes at 94 DEG C; denaturing for 30 seconds at 94 DEG C, annealing for 30 seconds at 52.9 DEG C, and extending for 30 seconds at 72 DEG C, circulating for 32 times; extending for 10 minutes at 72 DEG C and preserving at 4 DEG C. In order to provide evidences for rapidly and accurately monitoring whether corn leaves are latently infected by bipolaris maydis or not, prevention and control measures can be easily and effectively adopted as soon as possible.

The invention relates to a 4-substituted phenyl-6-trifluoromethyl-2-amino pyrimidinamine compound which has a novel chemical structure and a general formula III, a synthesis method for the compound and the application of the compound used as bacteriacide. The method comprises the following steps of: reacting substituted phenyl methyl ketone used as an initial raw material and trifluoroacetic acid ethyl ester under catalysis of sodium alcoholate to generate 4,4,4-trifluoro-1-substituded phenylbutane-1,3-diketone, and reacting 4,4,4-trifluoro-1-substituded phenylbutane-1,3-diketone and guanidinium salt under an alkaline condition to generate a III series compound with the general formula III. The compound with the general formula III can inhibit growth of pathogenic bacteria such as rice sheath blight, rice bakanae disease, exserohilum turcicum, bipolaris maydis, curvulavia lunata, corn kernel rot, corn top rot pathogenic bacteria, fusarium graminearum, cotton anthracnose, bean fusarium, rape sclerotinia rot, botrytis cinerea, cucumber fusarium wilt pathogenic bacteria, cucumber brown rot pathogenic bacteria, cucumber scab pathogenic bacteria, hot pepper root rot pathogenic bacteria, kidney bean anthracnose bacteria, and pythium aphanidermatum. In the formula III, R is methyl, ethyl, methoxy group, fluorine, chlorine, bromine, trifluoromethyl and other groups, and the number of R is 1 to 3.

The invention discloses a novel application of an antifungal medicine to prevention and control of crop diseases and belongs to the field of agricultural fungicides. The antifungal medicine is fluconazole and can prevent and control rice sheath blight disease, tomato early blight, rice blast, wheat powdery mildew, wheat stripe rust, rhizoma bletillae southern blight, apple alternaria leaf spots, bipolaris maydis and peanut root rot. Discovered that the fluconazole is relatively high in activity to various crop fungal diseases, the activities of some fluconazole are even higher than the activities of the triazole agricultural commercial fungicide used now, and the fluconazole can realize the novel application to prevention and control of the crop diseases.

The invention discloses the application of a Stilbene analog containing a thiazole ring structure as a fungicide. The structural formula of the Stilbene analog containing a thiazole ring structure is shown in formula (I): in formula (I), the H on the benzene ring is The substituent R is mono-substituted, di-substituted or unsubstituted; n is an integer from 0 to 2, and n represents the number of substituent R on the benzene ring; when n=0, it means that the H on the benzene ring is not substituted; n= When 1, it means that the H on the benzene ring is monosubstituted by the substituent R; when n=2, it means that the H on the benzene ring is disubstituted by the substituent R, and the substituents R on different substitution positions are the same or different; the substituents R is hydrogen, C1~C4 alkyl, C1~C3 haloalkyl, methoxy or halogen. The Stilbene analog containing the thiazole ring structure of the present invention has a good inhibitory effect on wheat head blight and maize spot fungus.

The invention belongs to the technical field of pesticides and discloses a mixed medicament and application thereof to prevention and treatment of bipolaris maydis. The mixed medicament comprises active ingredients including propiconazole and iprodione in a weight ratio of 6:4. By mixing of bactericides with different function mechanisms, the novel medicament for prevention and treatment of bipolaris maydis is obtained and conducive to delaying of field drug resistance, is capable of improving prevention and treatment effects and reducing medicament consumption and utilization cost and has potential social, economic and ecological benefits.

A kind of ChCDC10 gene of small spot bacterium maize and its application belong to the technical field of microbial genetic engineering. The ChCDC10 gene which is from the control of conidia formation, ascospore formation and pathogenicity of the small spot of corn provided by the invention, its DNA sequence is as SEQ Shown in ID No: 1; The protein encoded by the ChCDC10 gene provided, its amino acid sequence is shown in SEQ ID No: 2; ChCDC10 gene can be applied in the field of genetic engineering of plant resistance to maize spot disease; The protein ChCDC10, which controls the formation of conidia and ascospores and pathogenicity, is deleted, mutated or modified, so that the formation of conidia and ascospores is restricted and the pathogenicity is reduced, which can be used as a target in the design and screening of resistant maize It is safe for plants to be used in small spot disease agents, especially since such proteins do not exist in plants.

The invention discloses a breeding method of a waxy corn variety with high resistance against diseases and pests, belonging to the technical field of corn disease-resistant breeding. In the invention, high-yield high-quality waxy corn variety, high-resistance bipolaris maydis variety, high-resistance sphacelotheca reiliana variety, high-resistance ostrinia nubilalis variety and high-resistance puccinia polysora variety are adopted as parents; and through hybridization and backcrossing polymerization and multiple generations of seed waxiness and disease resistance identification and screening, a hybrid waxy corn variety with high resistance against 4 diseases and pests, good waxiness and excellent agricultural and yield traits is obtained.