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High-yield and efficient maize breeding method

A corn, high-yield technology, applied in the field of high-yield and high-efficiency corn breeding

Active Publication Date: 2020-10-23
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, apart from the conventional hybrid selection breeding method, there are few other innovative breeding methods reported in the literature. According to reports, the corn yield in my country is generally 200-300 kg per mu

Method used

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  • High-yield and efficient maize breeding method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Breeding corn varieties, selecting high-quality and high-yield varieties (lines) suitable for local planting, large ears, high seed setting rate, resistance to diseases and insect pests, weak tillers, and lodging resistance as parents for single-line 3-generation selection to achieve gene homozygosity; line After the selected seeds are dried naturally, use 100Gy 60 Co-γ-ray irradiation treatment; the irradiated seeds were subjected to single-line selection for three generations to breed excellent mutant corn seeds; the irradiation treatment time was 60 minutes.

[0023] 2) Soil treatment in the corn breeding area, spray saturated clarified lime water on the corn breeding soil, and pre-spray organic fertilizer; spray 50 kg of saturated clarified lime water per mu of corn breeding soil. The organic fertilizer is 15% potassium hydroxide and 15% phosphoric acid solution added to the filtrate prepared by wet-process phosphoric acid. When the pH value of the solution is 9....

Embodiment 2

[0026] 1) Breeding corn varieties, selecting high-quality and high-yield varieties (lines) suitable for local planting, large ears, high seed setting rate, resistance to diseases and insect pests, weak tillers, and lodging resistance as parents for single-line 4-generation selection to achieve gene homozygosity; After the selected seeds are dried naturally, use 100Gy 60 Co-γ-ray irradiation treatment; the irradiated seeds were subjected to 4 generations of single-line selection to breed excellent mutant corn seeds; the irradiation treatment time was 50 minutes.

[0027] 2) Soil treatment in the corn breeding area, spray saturated clarified lime water on the corn breeding soil, and pre-spray organic fertilizer; spray 30 kg of saturated clarified lime water per mu of corn breeding soil. The organic fertilizer is 10% potassium hydroxide and 10% phosphoric acid solution added to the filtrate prepared by wet-process phosphoric acid. When the pH value of the solution is 8.5, the nit...

Embodiment 3

[0030] 1) Breeding corn varieties, selecting high-quality and high-yield varieties (lines) suitable for local planting, large ears, high seed setting rate, resistance to diseases and insect pests, weak tillers, and lodging resistance as parents for single-line 3-generation selection to achieve gene homozygosity; After the tied seeds are naturally dried, use 100Gy 60 Co-γ-ray irradiation treatment; the irradiated seeds were subjected to 4 generations of single-line selection to breed excellent mutant corn seeds; the irradiation treatment time was 55 minutes.

[0031] 2) Soil treatment in the corn breeding area, spray saturated clarified lime water on the corn breeding soil, and pre-spray organic fertilizer; spray 40 kg of saturated clarified lime water per mu of corn breeding soil. The organic fertilizer is 12% potassium hydroxide and 12% phosphoric acid solution added to the filtrate prepared by wet-process phosphoric acid. When the pH value of the solution is 9.0, the nitroge...

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Abstract

The invention relates to the technical field of maize breeding, in particular to a high-yield and efficient maize breeding method. The method comprises the following steps of 1) selecting a high-quality and high-yield variety (line) which is suitable for local planting, large in ear, high in maturing rate, resistant to diseases and pests, weak in tillering and resistant to lodging as a parent, performing single-line 3-4-generation selection to achieve gene homozygosis, naturally drying seeds of the selected line, carrying out irradiation treatment by using 60Co-gamma rays, performing 3-4-generation single-line selection on the irradiated seeds, and breeding excellent variant maize seeds; 2) spraying saturated clear limewater to maize breeding soil, and pre-spraying organic fertilizer; 3) performing sowing; and 4) performing fertilization management: performing regular fertilization after sowing. Maize bred through the method is rich in variation type and high in implementation operability, the breeding variation efficiency is greatly improved, and the breeding period is remarkably shortened; and by combining with breeding soil treatment and fertilization management, nutrition required by each growth period in the breeding process is realized, so that multiple ears and full ears of a single plant are realized, and the maize yield is greatly increased.

Description

technical field [0001] The invention relates to the technical field of corn breeding, in particular to a high-yield and high-efficiency corn breeding method. Background technique [0002] Corn is the seed of the grass plant millet, and the shell is millet. Generally produced in the Yellow River Basin, according to Shaanxi, the Yellow River Basin in Gansu is better. The nutritional indicators of corn are: 14-16% protein, 3-6% fat, 37% soluble starch, 0.12% carotene, 0.99% Vb, and 18 kinds of essential amino acids. At present, there are few literature reports on the breeding and planting methods of corn except the conventional cross-breeding method, and other innovative breeding methods are rarely reported in the literature. According to reports, the yield of corn in my country is generally 200-300 kg per mu. Contents of the invention [0003] In order to overcome the above-mentioned technical problems, the present invention provides a high-efficiency breeding method for h...

Claims

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Application Information

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IPC IPC(8): A01H1/06C05G3/40
CPCA01H1/06C05G3/40C05B1/04C05B7/00C05C9/02
Inventor 卢华兵吕学高石丽敏朱正梅宋费玲许巧贤
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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