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Breeding method of corn hybrids

A hybrid and corn technology, applied in the fields of botanical equipment and methods, plant genetic improvement, application, etc., can solve the problems of high grain moisture content at maturity, large inter-annual variation in yield, and grain prone to mildew and deterioration, and achieve high yield. The effect of good yield stability, good quality and broadening the genetic basis of germplasm

Pending Publication Date: 2020-06-16
WHEAT RES INST OF AGRI SCI +1
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Problems solved by technology

At the beginning of this century, corn varieties widely used in production generally have shortcomings such as long growth period, tall plants, loose plant types, and high grain moisture content in the mature stage. These varieties cannot meet the needs of corn production and development, and generally have the following problems: Suitable for dense planting, poor yield; likes fertilizer and water, poor drought resistance, poor resistance to barrenness, large inter-annual changes in yield, poor yield stability; long ripening period, slow dehydration, grains are easy to rot and deteriorate, poor commerciality

Method used

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  • Breeding method of corn hybrids

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Embodiment Construction

[0014] 1. Parent selection

[0015] 1.1 Female parent selection

[0016] Through the planting identification of foreign hybrid X1132, it is found that it has the advantages of sparse branches and leaves, compact plant type, smaller tassel, higher yield, and better comprehensive resistance. These advantages indicate that X1132 is an ideal resource for exogenous germplasm improvement. In this case, with the Ruide line B73 as the recurrent parent and X1132 as the improved line, a three-cross hybrid of X1132 and B73 was prepared as the basic material for the selection of the new Ruide line. This preferred embodiment broadens the genetic basis of germplasm on the one hand, increases genetic variation, and clarifies the utilization direction of new populations on the other hand.

[0017] After obtaining the three-cross of X1132 and B73, an excellent individual plant was selected for the first generation of self-cross. The B73 parents of excellent individual plants were selected f...

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Abstract

The invention discloses a breeding method of corn hybrids. The method comprises the following steps: breeding a female parent with a group of foreign hybrids X1132 and B73 as a base material, breedinga male parent with a group of excellent selfing lines yellow C, Mo17 and 1572 as a base material, and preparing a new hybrid by hybridization with the bred parents. The breeding method utilizes foreign corn germplasm resources and domestic excellent selfing lines, broadens the genetic basis of the new hybrid and realizes organic unity of high yield, high quality and disease resistance of the hybrid.

Description

technical field [0001] The invention relates to a corn breeding method, in particular to a hybrid corn breeding method. Background technique [0002] Generally, it takes more than 10 years to select and breed a corn variety. At the beginning of this century, corn varieties widely used in production generally have shortcomings such as long growth period, tall plants, loose plant types, and high grain moisture content in the mature stage. These varieties cannot meet the needs of corn production and development, and generally have the following problems: Suitable for dense planting, poor yield; likes fertilizer and water, poor drought resistance, poor resistance to barrenness, large inter-annual variation in yield, poor yield stability; long ripening period, slow dehydration, easy to rot and spoilage of grain, poor commerciality. In corn production, there is an urgent need for corn varieties with moderate maturity, good density tolerance, drought resistance, fast dehydration a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 崔爱民张虎张久刚单皓贾成进王云峰张鹏华李新堂邱波席青松王华范宏宇
Owner WHEAT RES INST OF AGRI SCI
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