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High-oil routine rape variety recurrent selection method

A technology of recurrent selection and oil content, applied in the fields of botanical equipment and methods, applications, and plant genetic improvement, it can solve problems such as difficulty in breeding varieties, and achieve high yield, strong stress resistance, and wide adaptability. Effect

Inactive Publication Date: 2016-04-27
CHONGQING ACAD OF AGRI SCI
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Problems solved by technology

[0008] Production requires double-low conventional rape varieties with high oil content, high yield, strong stress resistance, and wide adaptability. Each of these excellent traits is controlled by multiple genes. Traditional The pedigree method or the microspore culture method has a very low probability of converging many good genes, so it is difficult to breed varieties that meet production needs

Method used

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Embodiment Construction

[0022] A method for recurrent selection of high-oil-content conventional rapeseed varieties, the method comprising the steps of:

[0023] 1) Classification of materials and establishment of basic reincarnation selection groups

[0024] 1.1) Screen inbred lines with outstanding good traits, no outstanding bad traits, high yield performance and stability as the basic material for recurrent selection; divide the identified inbred lines into medium oil content (oil content) according to oil content 41-45% oil content) and high oil content (more than 45% oil content) two groups.

[0025] 1.2) Mix the seeds of the inbred lines in the medium oil content group in equal amounts according to the number of inbred lines, sow them in the female parent line in the field for chemical male killing, and mix the inbred lines in the high oil content group in equal amounts according to the number of inbred lines , sow in the male parent row in the field for free pollination, the ratio of father ...

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Abstract

The invention discloses a high-oil routine rape variety recurrent selection method. The method comprises the following steps: 1, classifying materials, and establishing a base recurrent selection colony; 2, selecting a recurrent selection colony; and 3, establishing a high-oil recurrent selection colony, and breeding a high-oil routine variety. A new variety of double-low routine oil rape, with the advantages of high oil content, good yielding ability, strong stress resistance and wide adaptability is cultivated through fusing genes controlling the oil content, the yield and the stress resistance, and a new feasible high-oil routine rape breeding approach is provided.

Description

technical field [0001] The invention belongs to a conventional rapeseed breeding method, in particular to a recurrent selection method for conventional rapeseed varieties with high oil content. Background technique [0002] my country is a big country producing rapeseed, with an average yield of 1800kg per hectare and an average oil content of about 40% in rapeseed. According to the current level of rapeseed production and oil content, every 1% increase in oil content will contribute to oil production equivalent to a 2.5% increase in grain yield. 1% is equivalent to an increase of 45kg of rapeseed per hectare. The country will increase its annual income of 329,100 tons of rapeseed, and can squeeze out 120,000 tons of high-quality rapeseed oil. Rapeseed oil alone can increase economic benefits by nearly 800 million yuan. Therefore, in high-yield On the basis of high quality, cultivating rapeseed varieties with high oil content and improving the ecological adaptability of high-o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 黄桃翠
Owner CHONGQING ACAD OF AGRI SCI
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