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Breeding method for stabilized-yield and high-resistance corn variety

A new variety, high-resistance technology, applied in botany equipment and methods, applications, plant genetic improvement, etc., can solve the problems of reduced yield, stable yield, weak resistance to stress, and unstable yield.

Inactive Publication Date: 2006-08-16
张华英
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] There are many varieties of corn seeds used in production in my country, with significant differences in yield performance, and some are not strong in stable yield and stress resistance. For example, Dan 2100 has poor resistance to leaf spot disease, poor rice quality, and unstable yield.
Shendan 16 is susceptible to maize head smut. Under normal circumstances, the yield is high, but under unfavorable natural conditions, the disease will occur in a large area and the yield will be reduced. Therefore, new corn with high yield, stable yield and good resistance is selected breed matters

Method used

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Embodiment Construction

[0015] The method for breeding new corn varieties with stable yield and high resistance is characterized in that the breeding steps are as follows:

[0016] 1. Breeding male parent HF51 with good resistance and high combining ability

[0017] In 1996, a mutant strain was selected in a single-breeding field with Lujiu relatives, and it was bred through multiple generations of artificial selection; characteristic characteristics: plant height 230 cm, ear position 105 cm, ear length 18 cm, ear diameter 5.3 cm, 18- 20 rows, white shafts, yellow grains, tube-shaped; green leaves at seedling stage, gray-green at jointing stage, yellow filaments and anthers, 15-19 tassel branches, long main axis, thin branches, slightly curved tassels, It is semi-packed with the flag leaf, has a large amount of pollen, and takes a long time to disperse pollen; the plant type is upright, the opening angle is small, the leaves are wide, and there are about 22 leaves. It is resistant to lodging, drought...

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Abstract

A method for culturing the corn variety with high and stable yield and high resistance includes such steps as culturing HF51 as male parent with high resistance and high combining ability, culturing different female parents HW62, HW39 and C8605-2 with high resistance and high combining ability, and testing crossing to obtain multiple new varieties of corn.

Description

technical field [0001] The invention relates to a breeding method for corn seeds. Background technique [0002] There are many varieties of corn seeds used in production in my country, with significant differences in yield performance, and some are not stable in yield and stress resistance. For example, Dan 2100 has poor resistance to leaf spot disease, poor rice quality, and unstable yield. Shendan 16 is susceptible to maize head smut. Under normal circumstances, the yield is high, but under unfavorable natural conditions, the disease will occur in a large area and the yield will be reduced. Therefore, new corn with high yield, stable yield and good resistance is selected Variety matters. Contents of the invention [0003] The purpose of the invention is to provide a method for breeding a new corn variety with stable yield, high quality and high resistance. [0004] The method for breeding new corn varieties with stable yield and high resistance is characterized in that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
Inventor 张华英
Owner 张华英
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