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Breeding method of hybrid corn

A corn and hybrid technology, applied in the directions of botanical equipment and methods, application, and plant genetic improvement, can solve the problems of high moisture content of grains in the mature stage, poor resistance to fertilizer and water stress, and easy to mold and rot in the later stages, and achieve excellent quality. , the effect of strong density resistance and low cost of seed production

Inactive Publication Date: 2017-12-29
山西尧山种业科技有限公司
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Problems solved by technology

[0002] Before the variety selection, the corn varieties used in large-scale production generally have the following characteristics: long growth period, tall plants, loose plant type, and high grain moisture content in the mature stage. Poor commerciality of corn with high risk and late-stage grains that are prone to mold and rot

Method used

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  • Breeding method of hybrid corn

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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with specific embodiments.

[0023] 1. Parent selection:

[0024] The female parent inbred line K4178: uses three American hybrids as germplasm materials for selection. After three consecutive mixed plantings and open pollination, the basic population for selection is formed. Using methods such as north-south shuttle, high density and high pressure, and pedigree selection, the 6 generations of self-breeding;

[0025] Male parent inbred line F409: using the F1 plants of inbred line 5003 and inbred line U8112 as the basic material, using the methods of north-south shuttle, high density and high pressure, and pedigree breeding, through 6 generations of self-selection.

[0026] 2. Characteristics:

[0027] 2.1 Variety characteristics: Seedlings have strong top soil strength, strong growth, long ovate first leaves, light green leaf sheaths, and bright green leaves. The height of the adult plant is 285c...

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Abstract

The invention discloses a breeding method of hybrid corn. The breeding method includes that female parents are bred on the basis of three American hybrids, male parents are bred on the basis of fine corn inbred lines 5003 and 8112, and the No. 1 Fengda hybrids are prepared by the aid of hybridization of the bred parents. Foreign corn germplasm is successfully utilized, genetic basis of the germplasm is expanded, high specific combining ability is formed with domestic germplasm, and organic integration of high yield and good quality as well as drought control and poor soil tolerance of the hybrids is realized.

Description

technical field [0001] The invention relates to a corn breeding method, in particular to a hybrid corn breeding method. Background technique [0002] Before variety selection, corn varieties widely used in production generally have the following characteristics: long growth period, tall plants, loose plant type, and high grain moisture content in the mature stage. The risk is high and the grains are easy to rot in the later stage, and the commodity quality of corn is poor. Guided by these problems, breeders have designed new-type corn hybrids, whose specific characteristics are: moderate maturity, moderate plant height, compact plant type, tolerance to dense planting, drought resistance, barren tolerance, fast dehydration in the later stage, and excellent comprehensive traits. Using these traits as selection criteria, germplasm materials are selected and matched, parents are selected, hybrids are combined, and a new hybrid breeding method is finally formed. [0003] The 3 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
CPCA01H1/02
Inventor 崔爱民蔡春喜单皓郭龙其他发明人请求不公开姓名
Owner 山西尧山种业科技有限公司
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