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Method for breeding male sterible series of rice, and its application

A male sterile line, rice technology, applied in the field of rice male sterile line breeding, can solve the problem of unclear dominance and other issues

Inactive Publication Date: 2006-11-29
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

Huang Guotai and Zhou Kaida reported that Yunnan semi-dwarf strain D1 is dominant dwarf, but its dominant role is not clear

Method used

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  • Method for breeding male sterible series of rice, and its application
  • Method for breeding male sterible series of rice, and its application
  • Method for breeding male sterible series of rice, and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] see figure 1 .

[0017] A method for selecting a dominant semi-dwarf photo (temperature) sensitive karmic male sterile line of rice, which is mainly constructed in the following way:

[0018] Under the long-day conditions of the normal rice growing season in Hefei, the inventors used the rice photo(temperature) sensitive nuclear male sterile line 4008S as the female parent and the discovered dominant semi-dwarf mutant Y98149 as the male parent to carry out artificial hybridization , to obtain the artificial hybrid F 1 seed.

[0019] Under short-day conditions in the winter blooming season in Hainan, the hybrid F 1 Plants, remove pseudo-hybrids, reproduce F 2 seed.

[0020] F 2 plants. Simultaneously strict selection was carried out on the male sterility and plant height traits of the individual. Select plants with dwarf plants and complete male sterility for stubble cutting, and reproduce F 3 seed.

[0021] Harvested by individual plant F 3 Seeds, brought to ...

Embodiment 2

[0025] see figure 2 .

[0026] A hybrid rice combination (variety) is prepared and applied to rice production by using the selected rice dominant semi-dwarf photo(temperature)-sensitive male sterile line as the female parent and the rice male sterile restorer line as the male parent.

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Abstract

A method for selectively culturing the male sterile line of paddy rice features the artificial crossing between the photosensitive (or temp-sensitive) nuclear male sterile line 4008s as female parent and the dominant semi-short-stem mutant Y98149 as male parent. Its application is also disclosed.

Description

technical field [0001] The invention relates to a breeding method and application of rice male sterile lines. 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. Rice breeding in my country successfully used the recessive semi-dwarf gene sd-1 derived from the indica rice variety Dianjiaowujian through the improvement of dwarf varieties in the 1960s, which greatly improved the quality of rice in my country and the world. production level. However, with the deepening of the variety improvement process, the genetic diversity of the improved varieties showed a downward trend. [0003] According to reports, the genetic distance within a species of Asian cultivated rice is roughly the same as that between types within a subspecies, while the genetic distance between rice varieties bred in my country and their ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04A01G16/00A01G22/22
Inventor 童继平吴跃进吴敬德张瑛郑乐娅佘德红
Owner RICE RES ISTITUTE ANHUI ACAD OF AGRI SCI
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