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Breeding method of corn selfing line

An inbred line, corn technology, applied in the directions of botanical equipment and methods, application, plant genetic improvement, etc., can solve problems such as the inability to meet the needs of corn production

Inactive Publication Date: 2017-05-10
MAIZE RES INST GUANGXI ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the period of promoting the development of mechanization, most of the new corn varieties selected and bred by using these resources belong to the type of sparse planting and large ears, so they cannot meet the needs of corn production
The general lack of compact maize germplasm resources is a bottleneck factor in promoting compact maize germplasm innovation and breeding new maize varieties suitable for mechanized operations in tropical and subtropical regions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The method for breeding maize inbred lines provided in this embodiment comprises the following steps.

[0052] 1. Self-cross the corn line NH6249 through the second generation to select the optimal strain, and preferably obtain the S3 strain.

[0053] (1) In the spring of 2010, the maize line NH6249 was planted. According to planting observation and identification, this variety has a compact plant type, excellent comprehensive resistance, high yield, and early maturity. It is an excellent germplasm resource for innovative creation of new maize materials.

[0054] In the current season, the variety was self-pollinated to obtain the S1 generation, and the strains with excellent genotypes were isolated and screened from the S1 generation of the variety.

[0055] (2) From the autumn of 2010 to the autumn of 2011, according to the panicle row selection method, the panicle row with excellent genotype and its individual plants and ear grains were selected from the segregating ...

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Abstract

The invention discloses a breeding method of a corn selfing line and belongs to the technical field of corn breeding. The breeding method includes: using a corn line NH6249 as a basic material; obtaining the corn selfing line NH6249-1 after selfing of several generations. The corn selfing line NH6249-1 obtained by the breeding method has the advantages of high matchability, high yield, high quality and multi-resistance, is suitable in mechanical production and can be matched and bred to obtain a basic material of new corn varieties having excellent performances like high matchability, high yield, high quality and multi-resistance.

Description

technical field [0001] The invention relates to the technical field of corn breeding, in particular to a method for breeding corn inbred lines. Background technique [0002] Corn is a major crop worldwide. In my country, corn, as the largest food crop, has an important strategic position in food security, animal husbandry development and food processing industry. The key technologies for improving corn yields are the popularization and application of fine new varieties and scientific production methods adapted to local conditions. In general, the breeding and popularization of new fine varieties of maize contributed about 40% to the growth of maize yield. Excellent new varieties have the characteristics of high yield, high quality and wide adaptability. Breeding new corn varieties with high yield, high quality, multi-resistance and wide suitability is a long-term goal in the field of breeding. Promote continuous innovation to strengthen the food security situation and mee...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 江禹奉程伟东周锦国覃兰秋谭贤杰谢和霞曾艳华谢小东周海宇吕汉中邓杰
Owner MAIZE RES INST GUANGXI ACADEMY OF AGRI SCI
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