High-yield hybrid seed production method of corn

A hybrid seed production and high-yield technology, applied in the direction of botany equipment and methods, application, plant gene improvement, etc., can solve the problems of reduced seed production purity, poor greenhouse development, and small number of seeds, etc., to achieve improved seed plumpness, The effect of improving the purity of seed production and sufficient fertilization

Inactive Publication Date: 2016-11-09
HEFEI LONGYANG AGRI TECH CO LTD
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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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PUM

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Abstract

The invention discloses a high-yield hybrid seed production method of corn, and relates to the technical field of hybrid seed production. The technical scheme of the method is that firstly, maternal plants are trimmed, all bloomed flowers on the plants are wholly removed, and branches are pruned, and all branches below the corn grown at the first branching roots and internal twigs which are thin and stunted are removed; flower buds which bloom the next day are selected from the second layer to fourth layer, and detasseled after 5 pm of the same day; in the morning of the day before pollination or at 7 to 10 am of the same day, mature uncracked anthers are collected and dried in a dryer for the pollination; in general at 7 to 10 am appropriately, a writing brush or a rubber tip can be used for dipping pollen, and the pollen is gently applied to stigmas which are detasseled; about 50 to 70 days after the pollination, fruits are fully mature and then can be harvested. The high-yield hybrid seed production method of the corn disclosed by the invention improves the purity of corn seed production and yield and seed plumpness.

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 HEFEI LONGYANG AGRI TECH CO LTD
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