46 results about "Blast disease" patented technology

The invention discloses a method and a system for detecting rice panicle blast based on a deep convolutional neural network. The method comprises the following steps: acquiring a hyperspectral image of outdoor rice panicles and performing panicle blast disease calibration; performing data preprocessing and data enhancement on the hyperspectral image of the rice panicles; establishing a deep convolutional neural network model and optimizing model parameters with a stochastic gradient descent algorithm; detecting the hyperspectral image of the rice panicles to be tested with the trained deep convolutional neural network model, and judging whether the rice panicles are infected by the panicle blast disease or not. The system comprises a hyperspectral camera, a computer, a tripod and a reflection board, wherein the rice panicles are hung on the reflection board; the hyperspectral camera is fixed on the tripod, is connected with the computer, and has a lens aiming at the rice panicles on the reflection board. The method and the system provided by the invention can provide technical support for predicting the outdoor rice panicle blast disease and can also play an instructive role in rational and precise application and management of water and fertilizer, pesticide or other agricultural resources in a production process.

The invention belongs to the field of the agricultural pesticides and fungicides, in particular discloses a replaced aryl ether compounds and the preparation and application. The replaced aryl ether compounds of the invention are shown as the general formula (I): the general formula (I) compounds of the invention have the broad-spectrum activity--the compounds have very favorable control effects on the diseases such as the grape downy mildew, rice sheath blight, rice-blast disease, tomato late blight, powdery mildew, cucumber powdery mildew, cucumber downy mildew, cucumber gray mold, etc. The compounds of the invention simultaneously have very good insecticidal activity, have effects on a plurality of pests such as the armyworm, the diamondback moth, etc. and are very suitable for the integrated control of the pests on various crops.

The invention discloses a method for distinguishing a rice blast disease in rice based on aerial photographs of a farmland. The method comprises the steps of image preprocessing, image segmentation, extraction and identification of diseased spots and calculation of damage percentage. In the step of image segmentation, color component combined images are segmented by adopting an Otsu method according to background of the images and diseased spot color characteristics; in the step of extraction and identification of the diseased spots, specially, the extraction and identification of the diseasedspots can be used for identifying that the diseased spots are the diseased spots of the rice blast disease or natural yellowing diseased spots; and finally, by combining with national grading standard, the grades of disease disasters of the rice blast disease are determined according to the area proportion of the diseased spots of the rice blast disease on the leaf blades. According to the methoddisclosed by the invention, acquired photographs with complicated backgrounds can be processed preferably, interference is reduced, the type of the diseased spots can be accurately distinguished, andthe disaster grade of the rice blast disease can be accurately determined.

The invention discloses a medicine for preventing and treating livestock blast diseases, which is made from Melastoma dodecandrum, dandelion, Herba Lobeliae Chinensis, honeysuckle, radix isatidis, rhizoma anemarrhenae, Bupleurum, pomegranate rind, plantain, cornu saigae Tataricae, terramycin, sulfamethoxazole compound, and chloromycetin. The medicine has the efficacies of clearing heat, purging fire, sterilizing, detoxifying, dissipating swollen symptom as well as lump, stopping blooding as well as relieving diarrhea, inducing diuresis for treating stranguria, calming liver-wind, treating diarrhea with astringents, evacuating and reducing fever, producing fluid as well as moisturizing dryness, and removing heat from the blood as well as relieving sore throat. The medicine has better effects of preventing and treating the blast diseases of a plurality of domestic animals and fowls such as pigs, chickens, ducks, gooses, etc., and further has certain curative effects on the blast diseases of cattle, sheep and dogs and the diseases such as bird flu, aftosa, etc.

The invention relates to a purpose of a sterilization agent composition for preventing and treating rice diseases. The composition consists of two active substances and agriculture acceptable pesticide auxiliary agents, wherein the ingredient a is epoxiconazole, and the ingredient b is prochloraz (or agriculture acceptable metal salt type compounds of the prochloraz). In the active ingredients, the weight ratio of the epoxiconazole to the prochloraz is 0.03 to 65, and is preferably 0.05 to 55. The sterilization agent composition can be used for effectively preventing and treating rice blast diseases, rice sheath blight diseases and rice brown spot diseases. The composition obtained through compounding the ingredient a and the ingredient b has the positive effects in aspects of fungus resistance delay, prevention and treatment effect improvement and the like, and high sterilization activity is shown. Experiments prove that the composition provided by the invention has the characteristics that the use cost is low, the use is safe on plants and environment, and the like.

The invention discloses stenotrophomonas rhizophila S11 capable of preventing and treating rice blast diseases of rice. The stenotrophomonas rhizophila S11 is preserved in the China General Microbiological Culture Collection Center, and the preservation number is CGMCC No.18346. The invention discloses an application of the stenotrophomonas rhizophila S11 to preparation of medicines for preventingand treating the rice blast diseases of the rice. Besides, the invention discloses an antibiological inoculant capable of preventing and treating the rice blast diseases of the rice, a preparation method of the antibiological inoculant, and an application of the antibiological inoculant to prevention and treatment of the rice blast diseases of the rice. The antibiological inoculant contains the stenotrophomonas rhizophila S11. Through determination by a flat face-to-face culturing method, the inventor of the invention finds that the S11 strain has high antagonistic action on magnaporthe oryzae/pyricularia oryzae, and the diameter of an inhibition zone can reach 44mm; and green house inoculation and field experiment both indicate that the S11 antibiological inoculant can effectively prevent and treat the rice blast diseases of the rice. Therefore, the stenotrophomonas rhizophila S11 strain disclosed by the invention can be used for biological prevention and treatment of the rice blastdiseases of the rice, and has great popularization and application prospects.

The invention discloses an immunofluorescent reagent used for detecting muscovy duck gosling blast diseases, which is characterized in that an anti-GPV hybridoma cell strain D11 strain is used for preparing anti-GPV monoclonal antibody, then the GPV monoclonal antibody is used for labeling fluorescein isothiocyanate (FITC) to prepare the immunofluorescent reagent used for detecting muscovy duck gosling blast diseases; the anti-GPV hybridoma cell strain D11 strain is preserved in CCTCC, the preservation date is April 15th, 2011, and the preservation number is C201120. The invention also discloses an application of the immunofluorescent reagent used for detecting muscovy duck gosling blast diseases in clinical quick diagnosis of the muscovy duck gosling blast diseases, and an application ofpositioning and identifying of goose parvovirus antigen in tissue cells.

A rice blast disease resisting gene Pi1 tightly interlocked molecular marker R112865-1 and application thereof belongs to the field of molecular biology, relate to molecular markers, particularly to the rice blast disease resisting gene Pi1 tightly interlocked molecular marker R112865-1. The rice blast disease resisting gene Pi1 tightly interlocked molecular marker R112865-1 has a sequence shown as Seq ID No.1. The invention also relates to a primer for amplifying the rice blast disease resisting gene Pi1 tightly interlocked molecular marker R112865-1, application of the rice blast disease resisting gene Pi1 tightly interlocked molecular marker R112865-1 and the primer to rice blast disease resisting gene Pi1 positioning or rice genetic breeding, and a rice breeding method. The rice blastdisease resisting gene Pi1 tightly interlocked molecular marker R112865-1 and the amplification primer can well type rice blast disease resisting gene Pi1 and also can be applied to rice blast diseaseresistance molecular marker-assisted breeding to provide molecular assisted technical support for early determination and screening of rice blast disease resisting characters, thereby be of high significance in theories and practical guidance to acceleration of genetic breeding and improvement of rice varieties.

The invention is suitable for the technical field of breeding, and provides a breeding method of an anthocyanin-rich disease-resistant aromatic rice variety. According to the invention, a high-quality rice variety which is widely popularized at present and has excellent comprehensive characters and good resistance is hybridized and backcrossed with an anthocyanin-rich rice variety, molecular marker-assisted selection of a rice blast resistance gene and a fragrance regulation gene is carried out, rice blast and bacterial blight resistance is identified in combination with rice blast disease area identification and bacterial blight artificial inoculation identification, and the novel anthocyanin-rich rice strain with excellent yielding ability, disease resistance and comprehensive agronomic traits is obtained. According to the method, the genetic background of the purple rice variety is effectively improved by hybridizing the purple rice variety and the mainly-planted high-quality rice variety with excellent comprehensive agronomic traits; and meanwhile, molecular marker-assisted selection and pedigree breeding are combined, target genotypes and comprehensive agronomic traits are concerned in the whole breeding process at the same time, foreground selection and background selection are both considered, and the breeding process is improved.

The invention discloses a method for constructing a DCNN leaf blast classification model based on fusion features. The method comprises the following steps: S1, taking obtained different disease grade data of rice leaf blast as samples; s2, obtaining an optimal leaf blast classification feature; s3, constructing a rice leaf blast classification model; and S4, carrying out a training test on the rice leaf blast classification model in the step S3. On the premise of keeping the design concept of the ResNet network, the rice leaf blast classification model is established by adjusting the network depth and structure of the ResNet network and adding the BatchNorm layer and the Dropout layer, so that a scientific and theoretical basis is expected to be provided for rice leaf blast disease detection.

The invention discloses a primer group, a kit and a method for detecting pathogenic variation of a magnaporthe grisea avirulence gene AvrPi9. The magnaporthe grisea avirulence gene AvrPi9 is subjected to SNP change, so that AvrPi9 gene coding is terminated in advance, and the gene is converted into a toxic gene. The primer group comprises two pairs of primers, wherein the first pair of primers is used for amplifying an AvrPi9 gene segment; and the second pair of primers is used for identifying whether SNP causing AvrPi9 to be converted into a toxic gene after mutation exists or not. The invention provides two pairs of molecular markers of magnaporthe oryzae non-toxic genes AvrPi9, a molecular detection system of AvrPi9 pathogenic variation in a magnaporthe oryzae natural population can be quickly established by utilizing the molecular markers, and the distribution of the genes in the field natural population and the dynamic change rule of the genes are understood and mastered. Therefore, rice blast disease-resistant breeding and reasonable variety layout and rotation in each region are guided, so that the breeding efficiency is improved, rice blast is more effectively controlled, and a new strategy for comprehensively preventing and treating rice blast is designed.