A kind of lodging resistance type rice variety breeding method

A technology of lodging resistance and rice, applied in botany equipment and methods, plant gene improvement, application, etc., can solve the problems of inability to change lodging resistance, less consideration of lodging resistance, etc., and achieve excellent comprehensive traits and strong lodging resistance Effect

Active Publication Date: 2021-05-07
江西红一种业科技股份有限公司
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Problems solved by technology

In addition, at present, lodging resistance is rarely considered in the early stage of breeding hybrid combinations (restorer line breeding stage), and more consideration is given to hybrid yield advantage, and the lodging resistance cannot be changed until the variety is formed.

Method used

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  • A kind of lodging resistance type rice variety breeding method

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Embodiment Construction

[0023] The neck wrapping (wrapped ear) phenomenon of rice is mainly caused by the shortening of the first internode. The length of the ear neck of rice refers to the distance from the base of the ear to the occipital of the first leaf. When the ear neck length is less than 0 cm, it is called For the neck.

[0024] The inventor of the present invention found the neck mutant of natural variation in the field (preservation number is CGMCCNO.15191, derived from the offspring of Fuhui 838 / Case 253 hybrid, neck weight, ear neck length ≥-5cm), according to the breeding production practice There has been a practice in China, and it is generally considered to be a defective variety that cannot grow and mature naturally, so it is directly pulled out, thrown away, or left to fend for itself. However, the inventor did the opposite, conducted research on it, and found that it can be used for hybrid production after being covered with one leaf, and it has been proved by long-term breeding e...

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Abstract

The invention discloses a method for breeding lodging-resistant rice varieties, which belongs to the field of rice breeding. It mainly adopts rice necked mutants to improve the lodging resistance of rice, and breeds lodging-resistant restorer lines and lodging-resistant restorers. The line is further combined with the sterile line, so as to select and match a new hybrid rice variety (combination) with strong lodging resistance and excellent comprehensive properties. production, food security, and farmers' income increase.

Description

technical field [0001] The invention relates to the field of rice breeding, in particular to a lodging-resistant rice variety breeding method. Background technique [0002] In recent years, with the rapid development of direct-directed rice, lodging has become a common phenomenon in rice production. Lodging hinders the formation, transportation and storage of rice photosynthetic products, reduces the seed setting rate, and leads to a decrease in yield, generally by 10-30%. Lodging increases the cost of harvesting, shattering occurs, and increases the loss rate of rice. If it encounters cloudy and rainy weather after lodging, it will cause mildew and ear germination, which will adversely affect the quality of rice and cause the quality of eating to deteriorate. Therefore, the lodging problem has become one of the important limiting factors for high, stable and high-quality rice yields. [0003] There are many reasons for lodging, including improper fertilizer and water man...

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 周卫营阴云伙曲姗姗彭炳生李土明
Owner 江西红一种业科技股份有限公司
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