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Seed-breeding and seed-producing method of hybrid rice II You 42

A technology of hybrid rice and hybrid rice, applied in the field of breeding and seed production of hybrid rice II You 42, which can solve the problems of poor group ventilation and group canopy, and achieve the effects of large panicle, multiple grains, strong tillering ability and good fruiting

Inactive Publication Date: 2006-09-06
ZHENJIANG AGRI SCI INST JIANGSU HILLY AREAS
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Problems solved by technology

[0004] The search found that the Chinese patent application with the application number 94102551.9 and the application date of March 18, 1994 disclosed a breeding method for hybrid rice. The group canopy is closed, serious problems of diseases and insect pests occur, and the quality of rice still needs to be improved

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  • Seed-breeding and seed-producing method of hybrid rice II You 42

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Embodiment Construction

[0028] The breeding and seed production method of the hybrid rice II You 42 of the present invention will be further described below in conjunction with the accompanying drawings.

[0029] Breeding method:

[0030] A) Choose Zhenhui 129, a self-selected excellent and strong restorer line with a compact plant type, containing the blood of the clustered and fast-growing restorer Teqing, as the female parent, and select a compact plant type, containing the blood of the clustered and fast-growing restorer line Teqing, and carry Zhenhui 084, a self-selected excellent and strong restorer line with Xa-7 bacterial blight resistance gene and excellent quality, was used as male parent to cross to obtain F 0 seed;

[0031] B) Then selfing for 5 generations, selection while selfing, selecting individual plants with disease resistance, short leaves, compact plant type, and good appearance quality, from the 3rd generation of selfing F 3 At the beginning, adopt the cultivation method of wi...

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Abstract

The invention discloses a method for breeding and producing of hybrid seeds for hybrid rice II super 42. The breeding method comprises the following steps: A. taking Zhenhui129 as female parent and Zhenhui084 as male parent to get seed F0; B. auto-copulating for 5-7 generations and choosing at the same time plants with strong restoration and disease-resistant ability, short leaf, compact plant type and good appearance, cultivating out restoration system Zhenhui42 of new plant type, disease-resistant and high productivity; C. crossing sterile system II-32A with said restoration system Zhenhui42 and getting new rice breed II super 42 with high leaf blight-resistant property, short leaf and compact plant type. The rice got in this invention is characterized by the good comprehensive productivity, moderate maturity time; sound property; outstanding disease-resistant property and stable productivity.

Description

technical field [0001] The invention relates to a plant breeding and seed production method, in particular to a hybrid rice II You 42 breeding and seed production method. Background technique [0002] Rice is the largest crop in my country, and the planting area of ​​hybrid rice accounts for more than half of the rice planting area in my country. The improvement of hybrid rice varieties has always been a key field of agricultural research in my country. High quality, high yield, and multi-resistance are important long-term goals of rice breeding. The combination of ideal plant type and heterosis is one of the important ways to achieve breeding goals. [0003] In the past ten years, my country's hybrid rice breeding has progressed rapidly, and a large number of new hybrid rice varieties have been popularized and applied in production. However, most of the new hybrid rice varieties have too luxuriant leaves and poor ventilation in the group, which is likely to cause group cano...

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Application Information

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IPC IPC(8): A01H1/00A01H1/02A01H1/04A01G16/00A01G22/22
Inventor 龚红兵张继本盛生兰景德道周义文刁立平胡春明顾炳朝岳绪国李闯潘永飞陈全庚
Owner ZHENJIANG AGRI SCI INST JIANGSU HILLY AREAS
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