38results about How to "Reduced disease resistance" patented technology

The invention discloses a malt, pericarpium citri reticulatae and gizzard pepsin growth promotion and diarrhea stopping powder capable of effectively promoting the growth of piglets and preventing diarrhea. The malt, pericarpium citri reticulatae and gizzard pepsin growth promotion and diarrhea stopping powder consists of the following components of 10-15 parts of pericarpium citri reticulatae, 10-15 parts of malts, 10-20 parts of gizzard pepsin, 6-10 parts of rhizoma atractylodis, 5-10 parts of cortex fraxini, 5-10 parts of humifuse euphorbia herb, 6-12 parts of isatis root, 6-10 parts of astragalus membranaceus, 5-10 parts of pickpurse, 2-8 parts of cordate houttuynia, 2-6 parts of allicin, 2-8 parts of galangal and 2-6 parts of liquorice. The malt, pericarpium citri reticulatae and gizzard pepsin growth promotion and diarrhea stopping powder can effectively promote the growth of the piglets, prevent the diarrhea, improve the immunity and improve the survival rate of the piglets, is safe, has no toxic and side effects and no drug resistance and can completely replace antibiotics for health protection of the piglets.

The invention discloses a wheat stripe rust resistance related protein TabZIP74 and coding gene and application thereof. The wheat stripe rust resistance related protein is A1) or A2): A1 is the protein with an amino acid sequence of a sequence 2; A2) substitutes and / or removes and / or adds one or more amino acid residues to the amino acid shown in the sequence 2 in a sequence table and has the protein with the same functions of the protein shown the sequence 2. Experiments prove that the disease resistance on stripe rust of plants can be reduced after the coding genes of the stripe rust resistance related protein are interfered so that a transgenic plant with reduced stripe rust resistance can be obtained to be taken as a model plant for screening plant stripe rust resistance medicines. The stripe rust related protein and the genes thereof have significant meaning on culturing stripe rust resistance plants and are suitable for popularization and use.

The invention relates to a seed selection method for drought and heat resistant cymbidium hybridum. The method comprises the following steps: (1) carrying out the screening and parent selection on seed sources according to the standard of drought and heat resistance; (2) hybridizing the parents which have the drought and heat resistant characteristic and are selected in the step (1); (3) carryingout the seed asepsis culture; (4) carrying out the filial generation culture; and (5) carrying out the breed screening of the filial generation according to the standard of drought and heat resistance so as to complete the seed selection. The seed selection method for drought and heat resistant cymbidium hybridum can make full use of cymbidium hybridum resources at both home and abroad to culturea new cymbidium hybridum species with the proprietary intellectual property rights. The new cymbidium hybridum has the advantages of draught resistance, high temperature resistance, and adaptation tobe implanted in North China.

The invention belongs to the field of plant biotechnology, in particular provides a polygalacturonase arrestin gene CaPGIP1 cloned from hot pepper, the gene can specially inhibit the activity of polygalacturonase (PGs) secreted by pathogenic bacteria. The invention provides the function verification techniques based on the coding of the gene, such as protein making, enzyme activity testing, gene silencing, transgenic excessive expression and the like and the application of the techniques. Based on the gene and protein operation technology, the CaPGIP1 gene is proved to effectively participatein the defense reaction of hot pepper under the induction of a stress facto, and can inhibit the activity of polygalacturonase (PGs) secreted by various pathogenic bacteria. The gene silence and transgenic technology are further used for proving that the silence or less expression of the gene in the hot pepper reduces the disease resistance of a host, and the excessive expression of the gene in the transgenic tobacco can enhance the resistance; therefore, the gene codes an important disease-resistance related protein. The invention provides an important technological reserve for transforming the polygalacturonase arrestin (PGIP) gene and cultivating a new disease-resistant variety.

The invention provides microecologically agricultural polyvinyl chloride plastic masterbatch and a seedling growing tray prepared from the same. The masterbatch is prepared from components in parts by weight as follows: 10-40 parts of polyvinyl chloride, 15-25 parts of bentonite, 20-30 parts of kaolin, 10-60 parts of calcium carbonate, 0.1-1 part of a catalyst, 0.1-5 parts of a compatilizer, 0.5-2 parts of a stabilizer, 0.5-5 parts of a lubricant and 0.5-5 parts of mixed probiotics. The prepared seedling growing tray is well formed, is high in strength, not prone to deformation and easy to recover and can be repeatedly used, and the cost in a seedling raising process can be reduced; the added nanoscale bentonite, kaolin and calcium carbonate have the effect of preserving moisture and heat and are beneficial to seedling germination and reduction of irrigation labor intensity; with addition of the probiotics beneficial to seedling growth, seedlings are endowed with certain disease resistant capability, have many root hairs at roots, good root climbing effect as well as thick and strong stems and are high in emergence rate and survival rate, fertilizer application and pesticide spraying are almost unnecessary in the seedling raising process, labor is reduced greatly, and the viable number of the prepared microecologically agricultural polyvinyl chloride plastic masterbatch and seedling growing tray is high.

The invention discloses rice bacterial blight resistance related proteins OsBBR1 and coding genes and application thereof. The rice bacterial blight resistance related proteins OsBBR1 are following (A1), (A2) or (A3), wherein (A1) the proteins have the amino acid sequence of the 240-438 bits in the third sequence, (A2) the proteins are obtained in the process that the amino acid sequence shownin the 240-438 bits of the third sequence in a sequence table is subjected to substitution and / or deletion and / or addition of one or more amino acid residues, and have the same function, and (A3)the fusion proteins are obtained by connecting labels to the N ends or / and the C ends of the (A1) or the (A2). Experiments show that plants transfecting OsBBR1 genes can significantly improve diseaseresistance of plants, the disease resistance of the plants missing the OsBBR1 protein function after gene editing is lowered, which indicates that the OsBBR1 proteins and the coding genes thereof canbe used for improving the disease resistance of the plants and have great significance for cultivating the disease-resistant plants.