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Method for breeding restorer in hsien rice core and japonica rice character type and its hybrid combination

A hybrid combination and restorer technology, applied in the fields of botanical equipment and methods, applications, and plant genetic improvement, can solve the problems of narrow restoration spectrum, weak advantages, poor quality and resistance, etc.

Inactive Publication Date: 2003-05-07
NANJING AGRICULTURAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is aimed at the problems that the restorer lines in the domestic three-line hybrid rice are not strong due to similar blood relationship, the recovery spectrum is narrow, the quality and resistance are not good, etc., and the seed production and production of the two-line hybrid rice are easily affected by the external environment. (Temperature, light, fertilizer and water) influence, provide a breeding method of indica nuclear japonica type restorer line and its hybrid combination, the bred restorer line, in addition to the genetic basis of indica nuclear japonica quality, also has plant type Excellent leaf shape, good resistance, strong combination ability, wide recovery spectrum

Method used

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  • Method for breeding restorer in hsien rice core and japonica rice character type and its hybrid combination
  • Method for breeding restorer in hsien rice core and japonica rice character type and its hybrid combination
  • Method for breeding restorer in hsien rice core and japonica rice character type and its hybrid combination

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Embodiment Construction

[0024] Example (1) In 1988, the line "3079" with excellent comprehensive traits was selected as the male parent (♂). It is derived from the selection of four famous indica varieties at home and abroad: IR 24 (International Rice Research Institute); Guangluai 4 (Guangdong Academy of Agricultural Sciences); BG90-2 (Sri Lanka) and Yanxian 3021 (Yancheng, Jiangsu). The matching method is: IR 24 / Guangluai 4 / / BG90-2 / / / Salt Indica 3021. "3079" has good high yield, large ears and many grains, strong disease resistance, and excellent rice quality. The well-known domestic japonica wide-compatibility line "02428" (Jiangsu Academy of Agricultural Sciences) was selected as the female parent (♀) to produce F 1 . "02428" has excellent plant type, fertilizer resistance and lodging resistance, large panicle and many grains, and strong affinity for hybridization with indica rice. 02428 / 3079 hybrid generation (F 1 ) has a strong performance advantage, and the traits of the parents are com...

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Abstract

A process for breeding a high-yield high-quality multi-resistance hybridized long-grained rice includes grouping the varieties IR24, Guangluai No.4 BG90-2 and Yanxian 3021 to selectively breed excellent line "3079" as male parent, choosing broad-affinity line "02428" as female parent, hybridizing, cyclic hybridizing, test cross to choose the recovery line "D206" and hybridizing between "D206" and sterile line.

Description

1. Technical field [0001] The invention relates to a breeding method of an indica nuclear japonica plastid type restorer line and its hybrid combination, which is specially used for the production of high-yield, high-quality, multi-resistant hybrid indica rice. 2. Background technology [0002] The restorer line of domestic three-line indica hybrid rice is the IR series rice bred by the multi-line International Rice Research Institute (IRRI), such as IR 24 、IR 26 、IR 36 and their descendants. Among them, the most widely used restoration line in China is "Minghui 63" (its source is IR 30 / Gui 630 ). In the past 20 years, many restorer lines bred in China and used in large-scale production have a certain blood relationship with "Minghui 63". Easy to master, but the disadvantages are similar advantages, limited yield potential, poor stress resistance (disease resistance, cold resistance, lodging resistance), easy to premature aging in the later stage, especially high amy...

Claims

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Application Information

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IPC IPC(8): A01H1/02
Inventor 丁伦友
Owner NANJING AGRICULTURAL UNIVERSITY
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