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A breeding method for improving the transparency of rice large-grain varieties

A technology of transparency and rice, applied in the fields of botanical equipment and methods, plant genetic improvement, application, etc., can solve the problems of excessive rice whiteness and poor transparency.

Active Publication Date: 2018-03-02
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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Problems solved by technology

[0004] The purpose of the present invention is to provide a breeding method for improving the transparency of large-grain rice varieties, aiming to solve the problem of the existing SLG (preservation number CN16466) rice with too large white heart and poor transparency

Method used

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  • A breeding method for improving the transparency of rice large-grain varieties

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Embodiment Construction

[0016] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0017] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] Such as figure 1 Shown, the breeding method that the rice transparency of the embodiment of the present invention improves comprises the following steps:

[0019] S101: Crossing Zhejing 22-Shuanggrain with two rice varieties coated with two grains per grain and the large-grain variety SLG, F 1 Use SLG backcross to get BC 1 f 1 ;

[0020] S102: Plant BC 1 f 1 mixed harvest to get BC 1 f 2 Separate groups, BC 1 f 2 Plant 500 plants in the isolated population in the fiel...

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Abstract

The invention discloses a breeding method for improving the transparency of large-grain rice varieties. By selecting a double-grain gene different from normal rice, the double-grain gene is introduced into the large-grain variety SLG through backcrossing technology, and the original characteristics of SLG large-grain are maintained. Make SLG one grain of rice coated with one grain of rice into one grain of rice coated with 2 grains of rice to improve the transparency of rice; choose a double-grain gene different from normal rice, and introduce it into the grain type with large transparency and poor transparency through backcrossing technology In the large-grain variety SLG, the problem of poor transparency of the large-grain variety Xinbaida was improved; through multiple backcrosses and directional selection, the double-grain gene was introduced into SLG, and SLG-double grain with greatly improved transparency was bred. Compared with SLG, the transparency of SLG-double-grain rice of the present invention is significantly improved; compared with SLG, SLG-double-grain rice not only maintains the large-grain characteristics of SLG, but also can solve the problem of SLG with too large white heart and poor transparency.

Description

technical field [0001] The invention belongs to the technical field of crop breeding, in particular to a breeding method for improving rice transparency. Background technique [0002] Paddy paddy is formed by the two edges of the inner and outer palea interlocking to form a closed chaff, and the inside is covered with a grain of brown rice. The size of lemma and lemma play an important role in grain formation. On the one hand, assimilates are synthesized, and on the other hand, grains are shaped, affecting rice grain shape and filling degree, which in turn affect the transparency of rice. Rice transparency is an important evaluation index affecting rice quality, and rice transparency directly affects the appearance quality of rice. In recent years, with the continuous improvement of people's living standards in our country, rice with good transparency and high quality has become more and more popular among the people. The development and changes of rice in my country have ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 叶胜海张小明翟荣荣陆艳婷朱国富
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES