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Low-fertility-transition-starting-point-temperature photo-thermo-sensitive sterile line breeding method

A photothermosensitive sterile line and fertility conversion technology, which is applied in the field of breeding of low-fertility conversion starting point temperature photothermosensitive male sterile line, can solve the problems of complex technical measures, high cost, and difficult operation, and achieve The effect of improving breeding efficiency and high spike rate

Active Publication Date: 2013-12-25
ZHENJIANG AGRI SCI INST JIANGSU HILLY AREAS
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Problems solved by technology

The artificial climate chamber method has high cost and a small amount of treated materials; the cold water or natural low temperature treatment method is limited by natural resources in various places, and the technical measures are relatively complicated, and the operation is difficult and cumbersome

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  • Low-fertility-transition-starting-point-temperature photo-thermo-sensitive sterile line breeding method

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Embodiment Construction

[0020] The technical method of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0021] Taking Jiangsu Fengyuan Seed Industry Co., Ltd. as an example, the breeding process of Zhen 5863S, a two-line CMS line with low fertility conversion threshold temperature, is sensitive to light and temperature.

[0022] 1) to figure 1 Based on the breeding flow chart of Zhen 5863S, the details of the breeding process of Zhen 5863S are as follows:

[0023] (1) From the winter of 2006 to the spring of 2007, hybridization was carried out in Lingshui, Hainan with Y58S as the female parent and Guangzhan 63S as the male parent, and F 0 57 seeds;

[0024] (2) In the first season of 2007, F 0 Seed, get F 1 43 plants, the F 1 All transplanted to the linkage greenhouse, mixed harvest after removing miscellaneous, get 150 grams of F 2 seed;

[0025] (3) From the winter of 2007 to the spring of 2008, F was sown on Dece...

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Abstract

The invention discloses low-fertility-transition-starting-point-temperature photo-thermo-sensitive sterile line breeding method, which comprises the steps that sterile line seed selection materials are sown in Lingshui of Hainan Province on December 10, and individual plants or single ears with early fertility transition are selected for reserving seeds; the seeds are sown in Jurong of Jiangsu Province on July 10, and entire individual plants with late fertility transition are selected for reserving seeds. By adopting the method, low-fertility-transition-starting-point-temperature photo-thermo-sensitive sterile lines can be simply and conveniently obtained, the bred two sterile lines have the advantages of outstanding comprehensive agronomic characters such as good combining ability, strong tillering ability and high percentage of ear-bearing tillers, the effect of saving labor and cost is effectively obtained and the goal of improving the breeding efficiency is achieved.

Description

technical field [0001] The invention relates to the field of sexual hybridization of rice, in particular to a method for breeding low-fertility conversion starting point temperature photothermo-sensitive sterile lines. Background technique [0002] Rice is the largest food crop in my country. Since the 1970s, Chinese scientists have successfully bred the male sterile line of rice nuclear-cytoplasmic interaction, and successfully realized the three-line matching. Following the three-line hybrid rice, my country has created a high-tech two-line hybrid rice with the main content of utilizing photothermo-sensitive sterility. The two-line method has many advantages such as free combination and dual-use in one line, and the breeding progress is very fast. A large number of new hybrid rice varieties of the two-line method have been bred and popularized in production. [0003] One line of photothermosensitive male sterile line is dual-purpose, which is the basis of breeding two-lin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G16/00A01H1/04A01G22/22
Inventor 龚红兵李闯曾生元周义文盛生兰林添资景德道钱华飞余波
Owner ZHENJIANG AGRI SCI INST JIANGSU HILLY AREAS
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