Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Breeding method of high-rice-blast-resistance rice intermediate materials

An intermediate material and rice blast resistance technology, applied in the field of rice intermediate material breeding, can solve the problems of low yield, weak resistance to rice blast, and difficulty in achieving high resistance to rice blast, and achieve a rich genetic background, The effect of outstanding resistance

Active Publication Date: 2014-06-18
ZHENJIANG AGRI SCI INST JIANGSU HILLY AREAS
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many breeders have attempted to breed varieties with high blast resistance through various methods, but they have achieved little success. The main reason is that the parental materials used for hybridization are not strong against The effect of resistance to rice blast

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Breeding method of high-rice-blast-resistance rice intermediate materials
  • Breeding method of high-rice-blast-resistance rice intermediate materials
  • Breeding method of high-rice-blast-resistance rice intermediate materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: below in conjunction with accompanying drawing ( figure 1 , figure 2 , image 3 ) to further illustrate the breeding method of rice intermediate materials with high blast resistance carrying 5 blast resistance genes (Table 1):

[0025] Table 1 The source of the resistance gene of the present invention

[0026] donor resistance gene chromosome TETEP Pi-4 12 Devil's Valley Pi-13 6 IR24 Pi-20 12 Gumei 2 Pi-25 6 Gumei 4 Pigm 6

[0027] 1. If figure 1 As shown, there is a linkage phenomenon between the genes on the same chromosome and the traits they control. The recombination type is obviously lower than the parent combination type. The closer the distance between genes, the stronger the linkage strength. In order to achieve the aggregation of rice blast resistance genes, the linkage must be broken first to complete the aggregation of resistance genes on the same chromosome. F obtained by crossing...

Embodiment 2

[0033] Example 2: It is basically the same as Example 1, the difference is that the repeated cycle step (3) is added, and the following is combined with the attached Figure 4 Further illustrate the example of repeating the cycle step (3), continuously realizing the polymerization of new rice blast resistance genes, and breeding intermediate rice materials with high blast resistance.

[0034] The source of the new rice blast resistance gene: Zhaiyeqing 8, the chromosome 8 contains the resistance gene Pi-11.

[0035] Taking KDW201 (Pi-13, Pi-25, Pigm, chr6; Pi-4, Pi-20, chr12) as the female parent and Zhaiyeqing No. 8 (Pi-11, chr8) as the male parent, the female parent and F 1 In the next generation, through anther culture and molecular marker-assisted selection, the intermediate material KDW301, which aggregated six rice blast resistance genes, was selected.

[0036] Field appraisal of KDW301: rice seedling blast grade 0, ear stem blast grade 0;

[0037] KDW301 inoculation ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a breeding method of high-rice-blast-resistance rice intermediate materials, and particularly provides a method for breeding the high-rice-blast-resistance rice intermediate materials with the advantages that molecular markers are adopted for assisting the selection, and the anther culture is adopted for accelerating the stabilization. The method provided by the invention has the advantages that through the hybridization of rice-blast-resistance genes between different gene sites, the rice-blast-resistance genes are continuously polymerized, and the bred intermediate materials have very high resistance on the rice blast. The selected intermediate materials for the rice-blast-resistance gene polymerization have very prominent rice blast resistance, and can be widely used for improving the rice varieties with good integral properties but poor rice blast resistance. The interlocking between the rice-blast-resistance genes and rice-blast-sensitive genes on other gene sites is broken through anther, and the rice-blast-resistance genes are polymerized. The selected rice-blast-resistance material genes have very rich genetic backgrounds, filial generations prepared by using the selected rice-blast-resistance material genes as parents have very prominent resistance on the rice blast, and the new rice varieties with high rice blast resistance can be more easily obtained through breeding.

Description

technical field [0001] The invention relates to a method for breeding intermediate rice materials, and specifically describes a method for breeding rice intermediate materials with high blast resistance through molecular marker-assisted selection and accelerated and stable anther culture. Background technique [0002] At present, rice blast is one of the most serious diseases that harm japonica rice, and the grain loss caused by rice blast accounts for 11%-30% of the world's grain loss. fundamental strategy. Many breeders have attempted to breed varieties with high blast resistance through various methods, but they have achieved little success. The main reason is that the parental materials used for hybridization are not strong against Effects against rice blast. Contents of the invention [0003] The purpose of the present invention is to provide a method for breeding rice intermediate materials with high blast resistance, and create a batch of intermediate rice materia...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01H1/04
Inventor 余波林添资景德道龚红兵周义文盛生兰刁立平李闯钱华飞曾生元
Owner ZHENJIANG AGRI SCI INST JIANGSU HILLY AREAS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com