Hybrid rice breeding method for lowering seed production cost

A hybrid rice and low-cost technology, applied in the direction of botany equipment and methods, applications, plant genetic improvement, etc., can solve the problems of increasing labor costs for manual leaf cutting and poor results

Inactive Publication Date: 2011-01-19
RICE RES ISTITUTE ANHUI ACAD OF AGRI SCI
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Problems solved by technology

[0002] In conventional hybrid rice seed production, in order to reduce the leaf obstacles encountered in the process of pollen transmission from the restorer line to the sterile line, it is necessary to properly cut off the upper leaves of the restorer

Method used

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  • Hybrid rice breeding method for lowering seed production cost

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Embodiment Construction

[0015] Hybrid rice breeding method for reducing seed production cost:

[0016] 1. Breeding of the target restorer line

[0017] (1) Select a restorer line that meets the requirements of the high-yield breeding goal as the female parent, and cross it with the rice resource material or the indica low-temperature-sensitive genic male sterile line 399S with drooping leaf traits, and obtain about 50 hybrids.

[0018] (2), planting F 1 There are 10 to 20 plants, and 10 plants of the female parent and male parent of the hybrid are planted adjacent to each other at the same time to compare the true and false F 1 Plants, harvested mature F 1 Seeds 5 to 10 plants.

[0019] (3), planting separation generation F 2 From 1000 to 2000 plants, select several excellent single plants with recessive drooping leaf traits and meeting the requirements of breeding objectives.

[0020] (4), F who will be selected 2 Excellent single plant is planted into several F 3 Strains, select excellent si...

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Abstract

The invention discloses a hybrid rice breeding method for lowering seed production cost. A target restorer line with drooping leaf character is bred, test cross is carried out on the target restorer line with drooping leaf character and a sterile line, the lamina of the restorer line does not form hinder when the pollen of the restorer line spreads to the sterile line, and thus the lamina of the restorer line can be free from being cut off manually. The invention saves manpower and has good pollen spreading effect.

Description

technical field [0001] The invention relates to the field of rice planting, in particular to a hybrid rice breeding method which reduces the cost of seed production. Background technique [0002] In conventional hybrid rice seed production, in order to reduce the leaf obstacles encountered in the process of pollen transmission from the restorer line to the sterile line, it is necessary to properly cut off the upper leaves of the restorer line and the sterile line before pollination, which not only increases the manual mowing The labor cost of the leaves, and the effect of reducing the leaf obstacles encountered in the process of pollen transmission from the restorer line to the sterile line was not good. Contents of the invention [0003] The invention provides a hybrid rice breeding method that reduces the cost of seed production. The target restorer line with drooping leaf traits is tested crossed with the sterile line, so that when the pollen of the restorer line spread...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
Inventor 王守海杜士云吴爽王德正
Owner RICE RES ISTITUTE ANHUI ACAD OF AGRI SCI
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