Breeding method of typically sterile non glutinous rice widely compatible sterile line with high stigma exposure rate

A technology with exposed stigmas and typical types, applied in botany equipment and methods, plant genetic improvement, angiosperms/flowering plants, etc., can solve the problems of poor fertility stability of japonica sterile line and low yield of hybrid japonica rice , to achieve the effects of improving the characteristics of stigma exposure, increasing the yield of breeding seeds, and early flowering

Inactive Publication Date: 2009-12-09
CHINA NAT RICE RES INST
View PDF0 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the production of hybrid japonica rice that the fertility stability of the japonica rice male sterile line is poor and the yield of hybrid japonica rice seed production is low, the present invention provides an indica wide-compatibility material that introduces high stigma exposure and earl...

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 typically sterile non glutinous rice widely compatible sterile line with high stigma exposure rate
  • Breeding method of typically sterile non glutinous rice widely compatible sterile line with high stigma exposure rate
  • Breeding method of typically sterile non glutinous rice widely compatible sterile line with high stigma exposure rate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The breeding process of embodiment 1 Chunjiang 95A

[0023] In the autumn of 2003, Peiai 64S, an indica-type photothermosensitive male sterile line with early flowering, high stigma exposure rate and broad compatibility characteristics, was used as the female parent, and a high-yielding conventional japonica rice with no stigma exposure and no broad compatibility characteristics was used as the female parent. The variety Xiushui 110 was used as the male parent for crossing.

[0024] Peiai 64S is an indica rice low-temperature-sensitive male sterile line selected by Hunan Hybrid Rice Research Center. It has obtained the right to protect new varieties of agricultural plants. Affinity and other characteristics. Xiushui 110 is a high-yielding conventional japonica rice variety selected by the Jiaxing Academy of Agricultural Sciences in Zhejiang Province. Broad affinity.

[0025] In the winter of 2003, F of the hybrid combination Pei'ai 64S / Xiushui 110 1 The generation w...

Embodiment 2

[0027] Embodiment 2 The characteristic characteristic investigation of Chunjiang 95A

[0028]Chunjiang 95A is a wide-compatibility male sterile line of japonica rice with high stigma exposure rate during early flowering, excellent agronomic traits, strong tillering ability, short plant height, good plant type, short growth period, stable fertility, and high stigma exposure rate. Early flowering time, high seed production yield, good wide compatibility, strong combining ability, and good appearance rice quality. As a season of late rice cultivation, the general growth period is 125-130 days, the plant height is 80-85 cm, the ear length is 16-18 cm, and the total number of grains per ear is 110-130 grains. The seed setting rate of the maintainer Chunjiang 95B is about 90%, and the thousand-grain weight is 22 -23 grams. The measurement of Cheng's index shows that the total score of Chunjiang 95A is 16 points, belonging to the partial japonica type.

[0029] The response of Chun...

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 relates to a breeding method of typically sterile non glutinous rice widely compatible sterile line with high stigma exposure rate, belonging to the field of rice breeding. In the invention, indica type temperature sensitive sterile line Peiai 64S serves as a female parent, conventional non glutinous rice variety Xiushui 110 serves as a male parent, the two are hybridized, direction selection is carried out on later generations; single plant with good agronomic trait, high stigma exposure rate and early blossom time is selected, test cross is carried out on the single plant by typically sterile non glutinous rice sterile line Chunjiang 16A dwarfing-sterile, meanwhile, widely compatible testing seeds are used to carry out wide compatibility appraisal, thus breeding fine material Chunjiang 95 with high stigma exposure rate, early blossom time, good wide compatibility and capacity of staying sterile; Chunjiang 16A dwarfing-sterile/Chunjiang 95 F1 serves as the female parent, and Chunjiang 95 serves as the male parent to carry out back cross; fertility appraisal in a generation by generation manner and continuous back cross is carried out on the later generations after the back cross to transform the later generations after the back cross into typically sterile non glutinous rice widely compatible sterile line Chunjiang 95A with high stigma exposure rate and early blossom time, corresponding maintenance line thereof is Chunjiang 95B. The method of the invention has the advantages of improved fertility stability and hybrid non glutinous rice seed production output of non glutinous rice sterile line.

Description

technical field [0001] The invention belongs to the field of rice breeding, and in particular relates to a breeding method for a typical japonica rice wide-compatibility sterile line with high stigma exposure rate. Background technique [0002] According to the morphology of pollen development and the response to I-IK, three-line male sterile lines of rice can be divided into three types: normal, round and dyed. Typical abortive CMS lines are represented by wild abortive and dwarf abortive CMS lines. The pollen abortion period is earlier and occurs in the late mononucleate stage. The response of pollen grains to I-IK is mainly aborted, and The sex is not easily affected by environmental conditions such as high temperature, and the fertility stability is good. The rotten-type CMS is represented by the Honglian-type CMS. The pollen abortion period occurs at the binucleate stage. The response of pollen grains to I-IK is mainly rotten, and its fertility will be affected by high...

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
IPC IPC(8): A01H1/04A01H1/02A01H5/00
Inventor 林建荣吴明国宋昕蔚
Owner CHINA NAT RICE RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap