Locational cross breeding high efficiency seed hybridizing method for cotton

A location and high-efficiency technology, applied in the fields of botanical equipment and methods, applications, and plant genetic improvement, can solve problems such as unsatisfactory seed production efficiency, improve seed production efficiency, increase seed production yield, and reduce ineffective emasculation and pollination. effect of operation

Inactive Publication Date: 2005-08-03
COTTON RES INST HEBEI ACAD OF AGRI & FOREST SCI
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  • Abstract
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Problems solved by technology

Compared with the existing technology, although this technology has made some progress, the efficiency of seed production is still not ideal

Method used

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  • Locational cross breeding high efficiency seed hybridizing method for cotton
  • Locational cross breeding high efficiency seed hybridizing method for cotton
  • Locational cross breeding high efficiency seed hybridizing method for cotton

Examples

Experimental program
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Effect test

Embodiment 1

[0023] In the process of seed production, soil preparation and fertilization, seed treatment, row spacing configuration, and field management are all carried out by existing conventional methods.

[0024] Among the varieties selected, the 381-56 line was used as the female parent, and the 711-22 line was used as the male parent. About 1.5 kg of female parent and 0.15-0.2 kg of male parent are used per mu. The male parent and the female parent are planted in different areas, and the ratio of the male parent to the female parent is 1:10.

[0025] The sowing period is selected from April 20-25.

[0026] The pruning adopts fine pruning, that is, the male parent removes vegetative branches and superfluous buds, and shoots the top, not the cluster. The female parent's nutrient branches are topped with leaves, 15-16 fruit branches are topped, and the tips are removed in time. There are 85,000-112,000 fruit nodes per mu, and redundant buds are wiped in time.

[0027] Both chemical ...

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Abstract

The locational cotton cross breeding method includes seeding in proper time, reasonable close planting, proper line ratio, pruning, and eunuching and pollination. The key points of the present invention includes pruning technology, which consists of eliminating vegetative shoot, superfluous bud and top of male parent, topping vegetative shoots and topping 15 or 16 fruit shoots, eliminating group tip, leaving 85000-112000 fruit joints each module and eliminating superfluous bud timely; and the line ratio between male parent and female parent of 1 to 9-10. Compared with available technology, the present invention has 31.9 % reduced eunuching time, 46.6 % reduced pollination time and 10-13 % increased yield.

Description

technical field [0001] The invention relates to a hybrid seed production method of plant seeds, in particular to a cotton hybrid seed production method. Background technique [0002] Cotton hybrids are favored by people because of their excellent performance in yield, quality and adaptability. The most common cotton hybrid seed production method currently used in production is artificial castration, that is, the stamens of the female parent are manually stripped, and then the pollen of the male parent is applied to the stigma of the female parent to produce hybrid seeds. The biggest advantage of the artificial castration seed production method is that the selection of male parents is not limited, and the preparation and combination are free. Its disadvantages are high work intensity, high seed production cost and low seed production efficiency. With the continuous improvement of artificial detasseling technology, the efficiency of seed production has been improved accordin...

Claims

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Application Information

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IPC IPC(8): A01H1/02
Inventor 李伟明林永增王树林王志忠李智峰
Owner COTTON RES INST HEBEI ACAD OF AGRI & FOREST SCI
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