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Method and use of selective culture of male sterility line of rice

A technology of male sterile lines and male sterility, applied in the fields of application, botany equipment and methods, and plant gene improvement, can solve problems such as poor rice quality, decreased variety adaptability, and decreased resistance to diseases and insect pests, and achieve expanded utilization Effects of speed and range, accelerated speed and range of utilization, increased yield levels

Inactive Publication Date: 2005-06-15
RICE RES ISTITUTE ANHUI ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic hybrid rice production is seriously troubled by problems such as decreased variety adaptability, weakened stress tolerance, decreased resistance to diseases and insect pests, and poor rice quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: New rice male sterile line=nucleoplasmic interaction type male sterile line (A×B 1 ) × other fine varieties (B 2 ). B 2 The main agronomic traits, such as the beginning of sowing, plant shape, plant height, etc., and B 1 Much the same. The prepared three crosses were neat and consistent.

Embodiment 2

[0012] Embodiment 2: New rice male sterile line=nucleoplasmic interaction type male sterile line (A×B 1 ) × other fine varieties (B 2 ), B 2 The main agronomic traits and maintainer line B 1 Same, but more resistant to pests than B 1 There are important improvements. The newly selected nuclear-cytoplasmic interaction male sterile line has improved resistance to diseases and insect pests, and the prepared three-cross varieties are uniform and have improved resistance to diseases and insect pests.

Embodiment 3

[0013] Embodiment 3: New rice male sterile line=nucleoplasmic interaction type male sterile line (A×B 1 ) × other fine varieties (B 2 ), B 2 The main agronomic traits and maintainer line B 1 The same, but in terms of stress tolerance, such as cold resistance, cold resistance, heat resistance, drought resistance, etc., it is different from B 1 different. The newly selected nuclear-cytoplasmic interaction male sterile line has improved stress tolerance, and the prepared three-cross varieties are uniform and have improved stress tolerance.

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PUM

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Abstract

The invention discloses a rice male sterile line breeding method and its application, which is characterized in that the male sterile cytoplasm of rice nuclear-cytoplasmic interaction type is used to realize the maintainer line (B 1 ) and other fine varieties (B 2 ) to select and breed a new nuclear-cytoplasmic interaction male sterile line, with the selected rice nuclear-cytoplasmic interactive male sterile line as the female parent and the male sterile restorer line (R) as the male parent, A new combination of hybrid rice is prepared, the main agronomic traits of the population are uniform, and a certain amount of genetic heterogeneity is maintained genetically. , or a significant increase in production.

Description

technical field [0001] The invention relates to a breeding method and application of rice strains. Background technique [0002] my country is the most populous country in the world, and it is also one of the main rice producing countries in the world. Rice production plays a pivotal role in my country's grain production. The improved dwarf varieties in the 1960s and the improved hybrid varieties in the 1970s greatly increased the rice yield in my country. However, since the 1980s, the production level of rice breeding at home and abroad has continued to hover. Domestic hybrid rice production is seriously plagued by problems such as decreased variety adaptability, weakened stress tolerance, decreased resistance to diseases and insect pests, and poor rice quality. Therefore, it is of great significance to explore new breeding approaches to solve the above problems, both in theory and in practice. Contents of the invention [0003] The applicant found in the process of te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02
Inventor 童继平吴跃进吴敬德郑乐娅张瑛
Owner RICE RES ISTITUTE ANHUI ACAD OF AGRI SCI
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