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Chonghua No.2 cauliflower cross breeding technology

A technology of hybrid seed production and cauliflower, which is applied in the fields of botany equipment and methods, application, plant gene improvement, etc., and can solve problems such as low hybridization rate, weak insect resistance, and large amount of labor

Inactive Publication Date: 2007-06-27
上海崇明花菜研发中心
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Problems solved by technology

At present, domestic cauliflower hybrid seed production generally adopts artificial pollination at the bud stage, that is, the high-yield genes of the common cauliflower inbred lines are transferred to the cauliflower breeding materials through artificial pollination at the bud stage, and then the cauliflower inbred lines are bred. The cauliflower hybrids produced by inbred lines have the characteristics of high yield and white bulbs, but due to their shortcomings such as curd pine, weak insect resistance, heavy labor, and low hybridization rate, they can no longer meet the needs of local cauliflower production and development. need

Method used

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with specific embodiments.

[0012] The hybrid seed production technology of Chonghua No. 2 cauliflower uses the inbred line D8 as the female parent and the inbred line W12 as the male parent through mechanical emasculation and group pollination.

[0013] The D8 inbred line is selected and bred from Chongming local varieties through 8 generations of purification and rejuvenation. The main features of this inbred line are: plant height 70cm, spreading degree 55cm, curd diameter 22-23cm, compact, good insect resistance.

[0014] The W12 inbred line is obtained from a stable inbred line obtained by self-separation and self-separation from the first generation of Dutch cauliflower, and then purified and rejuvenated. The main features of this inbred line are: plant height 75cm, spreading degree 60cm, curd diameter 20cm, compact and good cold resistance.

[0015] In the hybrid seed production technology of...

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Abstract

The present invention provides a kind of Chonghua No. 2 cauliflower cross breeding technology. The Chonghua No. 2 cauliflower cross breeding process with selfing line D8 as female parent and selfing line W12 as male parent includes mechanical castration, colony pollination, and coordinate hybridization. The obtained Chonghua No. 2 cauliflower breed has the advantages of compact plant form, short and wide leaf stem, pure white ball flower, high pest resistance, high yield and other advantages.

Description

1. Technical field [0001] The invention relates to the field of agricultural breeding, in particular to a cauliflower hybrid seed production technology. 2. Background technology [0002] Cauliflower is also known as cauliflower, cauliflower. It is a variety of brassica Brassica species with curd as the product, a one-year or two-year-old herb. Because the curd of cauliflower is rich in vitamins, minerals, less in fiber content, beautiful in color, tender and delicious, it is deeply loved by the masses of the people. [0003] Cauliflower likes a warm and humid environment and has strong adaptability. It is widely cultivated all over the world. It is also common in the suburbs of large and medium-sized cities in my country, and the cultivation area is large. Since the introduction of cauliflower in Chongming County, Shanghai, the cultivation area has continued to expand, reaching 100,000 mu at present, and the development momentum is good. It has become a main variety of loc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
Inventor 黄成超陈泉生
Owner 上海崇明花菜研发中心
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