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High efficiency rice breeding method

A rice, high-efficiency technology, applied in the field of high-efficiency rice breeding, can solve the problems of heavy hybrid breeding workload, low breeding success rate, large blindness, etc., to achieve excellent comprehensive traits, high breeding efficiency, and good fertilizer-tolerant plant type Effect

Inactive Publication Date: 2008-05-28
RICE RES INST GUANGDONG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, the research on how to select hybrid parents has been very weak. Hybrid breeding still follows the classic parent selection principle formed decades ago. Hybrid breeding is facing problems such as heavy workload, high blindness, and low breeding success rate.

Method used

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  • High efficiency rice breeding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Breeding of Huanghuazhan Variety

[0032] (1) In the early season of 2000, Huang Xinzhan was used as the female parent and Fenghua Zhan was used as the male parent in the Rice Research Institute of the Guangdong Academy of Agricultural Sciences to obtain F 1 Among them, the female parent Huangxinzhan has average high yield, high amylose content, is susceptible to rice blast, and is related to japonica rice, but the thousand-grain weight is 2 grams larger than Fenghuazhan, and has good cold resistance in the later stage, and has a large genetic distance from Fenghuazhan.

[0033] (2) In the late season of 2000, F 1 Generation 12 plants, harvested from a single plant, obtained F 2 Substitute seeds;

[0034] (3) F planted in Dafeng base of Guangdong Academy of Agricultural Sciences in early season in 2001 2 Generation 1000 plants, select the single plant with large spike type, and harvest according to the single plant to get F 3 Substitute seeds;

[0035] (4) In the l...

Embodiment 2

[0040] Breeding of Variety Huaxinzhan

[0041] (1) In the early season of 1999, Yuefengzhan was used as the female parent and Fenghuazhan was used as the male parent in the Rice Research Institute of Guangdong Academy of Agricultural Sciences to obtain F 1 Substitute seeds; among them, the female parent Yuefengzhan passed the variety approval of Guangdong Province in 2001. It has large ears and many grains. , moderately susceptible to rice blast, moderately resistant to bacterial blight, its yield and total number of grains per panicle are higher than Fenghuazhan, and it is better complementary to Fenghuazhan.

[0042] (2) In the early season of 2000, F 1 Generation 12 plants, harvested F 2 Substitute seeds;

[0043] (3) In the late season of 2000, F 2 Generation 1000 plants, select the single plant with large spike type, and harvest according to the single plant to get F 3 Substitute seeds;

[0044] (4) In the early season of 2001, F 3 The generation seeds were planted...

Embodiment 3

[0050] Breeding of Fengzhongzhan Variety

[0051] (1) In the early season of 2001, at the Rice Research Institute of Guangdong Academy of Agricultural Sciences, Zhongeranzhan was used as the female parent and Fenghuazhan was used as the male parent, and F was obtained. 1 Substitute seeds; among them, the female parent Zhong Erruanzhan passed the variety approval of Guangdong Province in 2001. Zhong Erruanzhan has good taste, moderate sensitivity to rice blast, moderate resistance to bacterial blight, and the total number of grains per panicle is 13 more than Fenghuazhan on average. .

[0052] (2) In the late season of 2001, F 1 Generation 12 plants, harvested F 2 Substitute seeds;

[0053] (3) In the early season of 2002, F 2 Generation of 1000 plants, according to the ideal plant type model, appropriately relax the selection scale, select various types of individual plants with large panicle type, and harvest F 3 Substitute seeds;

[0054] (4) In the late season of 2002...

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Abstract

The invention discloses a high-efficiency rice breeding method, pertaining to rice breeding field. Core idioplasms such as Fenghuazhan and Fengshizhan are selected by the invention as a main body parent , and crossed with those varieties with comparatively more genetic distance and complementary characters, and the agricultural characters, eating quality and content of medium linear starch of the hybrid descendents are sifted, and rice blast resistance and bacterial blight resistance are screened, to further cultivate a series of good quality, high yield and a new rice variety of rice with disease resistance. The invention has a high breeding efficiency, shortens the breeding period and saves the breeding expenses.

Description

technical field [0001] The invention belongs to the field of crop breeding, in particular to a high-efficiency rice breeding method. Background technique [0002] Hybrid breeding is the main way to cultivate new varieties of rice, the key to the success of hybrid breeding is the correct selection of parents and reasonable combination. For a long time, the research on how to select hybrid parents has been very weak. Hybrid breeding still follows the classic parent selection principle formed decades ago. Hybrid breeding faces problems such as heavy workload, high blindness, and low breeding success rate. [0003] Core germplasm refers to varieties or intermediate materials with excellent comprehensive agronomic traits, broad genetic base, and good combining ability. Using core germplasm for breeding can reduce the workload of hybrid breeding, reduce the blindness of breeding work, and improve the quality of breeding. efficiency. [0004] Fenghuazhan is a rice variety with co...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04A01H5/00
Inventor 周少川李宏缪若维黄道强卢德城赖穗春
Owner RICE RES INST GUANGDONG ACADEMY OF AGRI SCI
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