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

Breeding method of two-line CMS line with variegated leaves, long stigma, long panicle neck and bare body

A technology with variegated leaves and long panicle necks, which is applied in the fields of botany equipment and methods, applications, plant genetic improvement, etc., can solve the problems of low purity of hybrids, high risk factor of seed production, poor purity, etc., and achieve high purity , easy mechanized harvesting and cost reduction

Inactive Publication Date: 2016-07-06
FUJIAN AGRI & FORESTRY UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a common problem in the production of two-line hybrid rice seeds is the poor purity of the two-line sterile lines resulting in hybrid F 1 The purity is not high, and the risk factor of seed production is high

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) Take rice striped leaf mutant st(t) (A) (Sang Xianchun et al. Identification and genetic mapping of rice striped mosaic mutant st(t). Acta Crops, 2010,36(2):211 ?216), the long stigma variety Hai B (B) (Chen Yuxin. Breeding research on the long stigma male sterile line Hai A of hybrid rice. Journal of Hainan University, Natural Science Edition, 1991,9(2):54-58), Changsui The neck variety Shuhui 527eR(1) (C) and the naked rice variety Lemont (D) were used as parental materials, and the two-line male sterile line C815S was used as the recurrent parent (R) to cross A / B and C / D to obtain a hybrid f 1 Substituted by F 1-AB and F 1-CD express;

[0018] 2) Planting hybrid F 1 Substitute material F 1-AB and F 1-CD , in the flowering stage for hybrid F 1-AB / F 1-CD , get recrossed 1 generation, with F 1-ABCD express;

[0019] 3) Planting step 2) obtained recross F 1-ABCD , F 2-ABCD , planting F 2-ABCD , with a population of 1,600 plants. At the seedling stage, id...

Embodiment 2

[0026] 1) The rice striped leaf mutant st(t) (A), the long stigma variety HaiB (B), the long panicle neck variety Shuhui 527eR(1) (C), and the naked rice variety Lemont (D) were used as parents Materials, using the two-line male sterile line Y58S as the recurrent parent (R), cross A / B and C / D, and get the cross F 1 Substituted by F 1-AB and F 1-CD express;

[0027] 2) Planting hybrid F 1 Substitute material F 1-AB and F 1-CD , in the flowering stage for hybrid F 1-AB / F 1-CD , get recrossed 1 generation, with F 1-ABCD express;

[0028] 3) Planting step 2) obtained recross F 1-ABCD , F 2-ABCD , planting F 2-ABCD , with a population of 1,700 plants. At the seedling stage, identify and select rice seedlings with both variegated leaves and bare body traits and transplant them to the field. At the flowering stage, select 3 rice plants with both long stigma and long panicle neck traits and Y58S (as the female parent) Hybrid, get hybrid F 1 Generation, to RF 1 express; ...

Embodiment 3

[0035] 1) The rice striped leaf mutant st(t) (A), the long stigma variety HaiB (B), the long panicle neck variety Shuhui 527eR(1) (C), and the naked rice variety Lemont (D) were used as parents The material is two-line male sterile line quasi-S as the recurrent parent (R), and crosses A / B and C / D to obtain the cross F 1 Substituted by F 1-AB and F 1-CD express;

[0036] 2) Planting hybrid F 1 Substitute material F 1-AB and F 1-CD , in the flowering stage for hybrid F 1-AB / F 1-CD , get recrossed 1 generation, with F 1-ABCD express;

[0037] 3) Planting step 2) obtained recross F 1-ABCD , F 2-ABCD , planting F 2-ABCD , with a population of 1800 plants. At the seedling stage, identify and select rice seedlings with both striped leaves and bare body traits to transplant to the field. At the flowering stage, select 3 rice plants with both long stigma and long panicle neck traits and quasi-S (as the female parent ) to cross, get hybrid F 1 Generation, to RF 1 express;...

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 for a two-line sterile line with variegated leaves, long stigma, long panicle neck and bare body, and belongs to the technical field of special rice breeding. In this method, rice striped leaf mutants, long stigma varieties, long panicle neck varieties, and naked rice varieties are used as parental materials, and excellent two-line sterile lines are used as recurrent parents, and the striped spot is obtained by hybridization, recrossing and backcrossing aggregation methods. The four traits of leaf, long stigma, long panicle neck and bare body were aggregated into the two-line CMS line, and the agronomic, yield and fertility traits were consistent with the original CMS line through multi-generation selection, with variegated leaves, long stigma, A two-line male sterile line with four special beneficial traits of long panicle neck and bare body. The sterile line has the advantages of high purity, less gibberellin in seed production, high seed production yield, and easy mechanized harvesting.

Description

technical field [0001] The invention specifically relates to a method for breeding a two-line sterile line with variegated leaves, long stigma, long panicle neck and bare body, and belongs to the technical field of special rice breeding. Background technique [0002] The invention of two-line hybrid rice has further established China's leading position in the field of hybrid rice breeding research in the world. However, a common problem in the production of two-line hybrid rice seeds is the poor purity of the two-line male sterile lines resulting in hybrid F 1 The purity is not high, and the risk factor of seed production is high. The marker gene of variegated mosaic (referred to as variegated leaf) is transferred to the two-line male sterile line by hybridization as a marker trait, which can easily remove the mixed plants and greatly improve the F of the male sterile line and the hybrid. 1 purity. The length of the stigma of the glumes of the CMS directly affects the dif...

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 章清杞李晓燕罗永根陈幼玉李美德
Owner FUJIAN AGRI & FORESTRY UNIV
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