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High-yield hybrid maize seed production method

A hybrid seed production, high-yield technology, applied in the directions of botanical equipment and methods, application, plant genetic improvement, etc., can solve the problems of reduced seed production purity, poor growth of flower houses, and small number of seeds, and achieves improved seed fullness, The effect of improving seed production purity and yield

Inactive Publication Date: 2016-11-09
安徽菲扬新材料有限公司
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AI Technical Summary

Problems solved by technology

[0002] The current maize seed production mainly uses the method of detasseling and pollinating at the same time in flower selection. This method is widely used, mainly because it is convenient to save time. If the pollination is already produced, the purity of seed production will be reduced. If the selected flowers are too small, the growth of the flower room will not be good, especially the stigma, the pollination and fertilization effect will be poor, and it will be difficult to sit on the fruit.
Traditional maize pollination methods have limited maize seed production

Method used

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Embodiment Construction

[0014] The present invention is mainly aimed at the flower selection and pollination link, and the detailed process of main hybrid seed production is as follows:

[0015] 1. Strict isolation: Although corn is a common cross-pollinated crop, and the possibility of pollen spreading by wind is small, corn flowers are very attractive to insects, which can easily cause biological confusion and affect seed quality. Therefore, the isolation distance between the corn seeding field and other corn varieties is required to be more than 500 meters.

[0016] 2. Sowing at the right time: The optimum temperature for corn pollen germination is 20-25°C, so seedlings of the right age should be cultivated by adjusting the sowing time and controlling the temperature. In order to make the parents reach the full flowering stage at the right time for hybridization, seedlings can be raised in cold beds. The early and mid-maturing varieties are sown in early November, and the late-maturing varieties a...

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Abstract

The invention discloses a high-yield hybrid maize seed production method, and relates to the technical field of hybrid seed production. According to the technical scheme, the method comprises the following steps: trimming a maternal plant to remove all flowers in blossom from the plant, and simultaneously pruning to remove all branches below a first fruit and internal thin and stunted branches; starting selecting buds to be bloomed the next day, from the second to fourth layers of flowers, and performing castration after 5 in the afternoon; collecting and drying mature un-cracked anthers in a dryer for pollination at 7 to 10 in the morning before or on a pollination date; slightly coating castrated stigmas with pollens dipped by a writing brush or an eraser head preferably at 7 to 10 in the morning; harvesting fruits when the fruits are fully mature about 50 to 70 days after pollination. According to the method, the maize seed production purity and yield and the plumpness of seeds are improved.

Description

technical field [0001] The invention relates to the technical field of hybrid seed production, in particular to a method for high-yield hybrid seed production of maize. Background technique [0002] The current maize seed production mainly uses the method of detasseling and pollinating at the same time in flower selection. This method is widely used, mainly because it is convenient to save time. If the pollen is produced, the purity of seed production will be reduced. If the selected flowers are too small, the growth of the flower room will not be good, especially the stigma, the pollination and fertilization effect will be poor, and it will be difficult to sit on the fruit. Traditional maize pollination methods have limited maize seed production. Contents of the invention [0003] The purpose of the present invention is to provide a high-yield hybrid seed production method of corn, which selects the flowers that will open the next day, the flowers are moderately selected...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
CPCA01H1/02
Inventor 岳朝雷
Owner 安徽菲扬新材料有限公司
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