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Corn three-line breeding technique

A corn breeding and corn technology, applied in the fields of botany equipment and methods, applications, plant genetic improvement, etc., can solve the problems of seed production failure, low yield, incomplete castration, etc.

Inactive Publication Date: 2010-01-06
李光宗
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of pulling out smallpox, if three-thousandths of the female plant smallpox is not pulled out, the seed production will fail; or if the female plant is not completely castrated (the male flower has side branches or residual branches), the yield of hybrid seeds after sowing not tall

Method used

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  • Corn three-line breeding technique
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  • Corn three-line breeding technique

Examples

Experimental program
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Effect test

Embodiment Construction

[0022] Select two isolation areas, breed the sterile line, maintainer line, restorer line seeds and prepare hybrid seeds.

[0023] in figure 2 A and figure 2 B is the propagation of the corn sterile line and maintainer line: choose to plant and propagate the seed of the sterile line and maintainer line in a field or field with no corn planting and water irrigation above 300 meters. The seeds produced by the pollen of the maintainer line to the sterile line are the seeds of the sterile line, and the seeds produced by the sister cross of the maintainer line are the seeds of the maintainer line.

[0024] figure 2 C and figure 2 D is the propagation of seed production and restorer lines: at the same time, select another isolated area to plant and reproduce restorer line seeds and hybrid seeds in a field or field with no corn planting and water irrigation above 300 meters. The seeds produced from the pollen of the restorer line to the sterile line are hybrid seeds. The see...

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Abstract

The invention relates to a corn three-line breeding technique, which comprises male sterile line A1 and A2, maintainer line B1 and B2, and restorer line AR1 and AR2, wherein during the production of hybrid seeds of corns, the complicated process step of artificial emasculation is omitted, and the production cost is reduced, and simultaneously the seed quality of hybrid seeds is improved. After seeding the hybrid seeds, the hybrid vigour is strong, and the increase in yield is significant. During the propagation and the production of the hybrid seeds of the three-line seeds, only by picking powder and performing artificial supplementary pollination in a propagation seed production area, the yield of propagating the three-line seeds and the hybrid seeds can be improved. Two isolation areas are selected to propagate the seeds of the male sterile line and the maintainer line, and the row ratio for culturing the male sterile line and the maintainer line is 4:1 or 6:1. One isolation area is used for propagating the seeds of the male sterile line and the maintainer line, while the other isolation area is used for producing the hybrid seeds and the restorer line seeds. The row ratio for culturing the hybrid seeds and the restorer line seeds is 4:1 or 6:1.

Description

Technical field: [0001] The invention belongs to the technical field of corn three-line breeding. Background technique: [0002] Maize belongs to the maize family in Poaceae, maize belongs to maize species, and is an annual grass plant. It is also a valuable food and feed crop. [0003] Corn is a monoecious, cross-pollinated crop, with the male flowers (smallpox) on top and the female flowers (sakura) in the middle. After the corn is planted, it blooms when it reaches 11-17 leaves. The male flower extracts loose powder from the leaf sheath of the sword leaf, the female flower extracts from the leaf sheath in the middle of the plant, and the top of the ear spits out a pistil (cherry whisker). The pollen is blown by the breeze and scattered on the cherry whiskers, fertilized and firm. Maize crops are grown using heterosis to obtain high yields. Corn hybrids are seeds produced by crossing two inbred lines. The first generation of hybrid vigor is strong, and the yield is si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
Inventor 李光宗
Owner 李光宗
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