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Sorghum dwarfing mutation breeding method

A technology of mutation breeding and chemical mutagen, applied in botany equipment and methods, seed immunity, plant gene improvement, etc., to achieve the effect of expanding mutation spectrum, accelerating breeding process, and excellent germplasm resources

Pending Publication Date: 2020-06-26
SHANXI ACADEMY OF AGRI SCI SORGHUM RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, my country's agricultural production lacks a systematic and effective sorghum planting model for increasing production and income

Method used

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  • Sorghum dwarfing mutation breeding method
  • Sorghum dwarfing mutation breeding method

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Embodiment 1

[0026] A sorghum dwarf mutation breeding method, comprising the following steps:

[0027] Step 1: Pretreatment after seed selection;

[0028] Step 2: physical mutagenesis, putting the sorghum seeds in step 1 into plastic bags for irradiation treatment;

[0029] Step 3: chemical mutagenesis, soaking the seeds irradiated in step 2 in a chemical mutagen for treatment to obtain chemically mutagenized seeds;

[0030] Step 4: post-mutation treatment;

[0031] Step five: screening of dwarf sorghum mutants;

[0032] Step 6: All the M1 generation seeds harvested by a single plant are planted in the next year to form M2 generation lines, and untreated seeds are selected as controls, and the flowering period is compared with the control, and the stability of the flowering period traits is observed in the strains. When it tends to be stable, carry out mixed harvesting and detachment, harvest the M3 generation seeds, and obtain the short-stalked mutant sorghum varieties; continue to pla...

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Abstract

The invention belongs to the field of sorghum breeding, and particularly relates to a sorghum dwarfing mutation breeding method. The method comprises the steps of conducting pretreatment after seed selection; conducting physical mutation, wherein sorghum seeds are put into a plastic bag for irradiation treatment; conducting chemical mutation, wherein the seeds subjected to irradiation treatment are soaked in a chemical mutation agent for treatment, and chemical mutation seeds are obtained; conducting mutation aftertreatment; screening dwarfing sorghum mutants; planting M1-generation seeds harvested from a single plant in the next year to form M2-generation strains, selecting untreated seeds as a contrast, comparing the flowering period with the contrast, observing the stability of the characters of the flowering period in the strains, conducting mixed harvesting and mixed threshing on the seeds which tend to be stable, harvesting M3-generation seeds, and obtaining a dwarf variant sorghum variety; and planting the strains with the characters continuously separated, continuing to plant and harvest the single plant, harvesting M3-generation seeds, and continuing to conduct identification and selection on the next system in the M4 generation till the dwarf variant sorghum variety is obtained.

Description

technical field [0001] The invention belongs to the field of sorghum breeding, and in particular relates to a sorghum dwarfing mutation breeding method. Background technique [0002] my country is a populous country, and sorghum is one of the three major grain crops. Sorghum production occupies a very important position in my country's agricultural production and national economy. The development of sorghum production has great practical significance for increasing farmers' income, ensuring national food security and even economic security. Although the total annual production of sorghum in my country has developed rapidly, the total annual production of sorghum is insufficient, and there is still a large gap with the market demand for sorghum in my country, so a large amount of imports is required every year. Affected by the lack of agricultural land resources per capita and the adjustment of agricultural planting structure in China, it is difficult to expand the sown are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/04A01H1/06A01H3/00A01C1/08
CPCA01C1/08A01H1/04A01H1/06A01H3/00
Inventor 周福平范娜史红梅张海燕杨彬赵建武彭之东程彦俊申惠勇李瑞刘建兵周建红
Owner SHANXI ACADEMY OF AGRI SCI SORGHUM RES INST
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