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A kind of head smut resistant sorghum breeding method

A head smut and sorghum-resistant technology, applied in the agricultural field, can solve problems such as low work efficiency, long time required, and large field area, and achieve the effects of accelerating breeding speed, strong operability, and reducing field breeding groups

Active Publication Date: 2019-10-08
SHANXI ACADEMY OF AGRI SCI SORGHUM RES INST
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Problems solved by technology

[0003] In order to solve the problems of large field area, long time required and low work efficiency in identification of resistance to head smut, the present invention provides a breeding method for head smut resistance sorghum, which is specifically a combination of field identification and indoor growth cone identification A method that has the advantages of quickness and accuracy

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  • A kind of head smut resistant sorghum breeding method

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Embodiment 1

[0030] Example 1: Selection of R111*L17

[0031] R111 and L17 were crossed to obtain F1 seeds. The obtained F1 generation seeds were planted in the field, and the seeds of F3 generation were obtained by selfing two generations. Both generations of seeds were selected to resist head smut, and F4 generation seeds were harvested.

[0032] Indoor identification of resistance to head smut of F4 generation: Taking the resistance of single ear of F4 generation as a unit, 100 seeds per ear were taken for resistance identification indoor at a temperature of 25℃ and a relative humidity of 70%.

[0033] Plant sorghum seeds in a culture box filled with sand, inoculate with 0.5% fungal soil, and insert a card to mark the source. Thirty days after emergence, the seedlings were taken to peel off the outer leaves, leaving the growth cones, stained with aniline blue lactic acid stain, and microscopically examined whether the growth cone base tissues of the seedlings were stained with dark blue hyphae...

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Abstract

The invention relates to a method for breeding head smut-resisting sorghum and belongs to the field of new agricultural variety cultivation. The method comprises the following steps: establishing a head smut-resisting hybrid colony by hybridizing and inbreeding a head smut-resisting sorghum strain as a female parent and combining indoor seedling identification with field plant identification, thereby realizing the breeding method for one-generation twice resistance identification and selection and quickly and accurately breeding the head smut-resisting sorghum variety. The head smut-resisting sorghum strain bred according to the invention can be used as a male parent or female parent for sorghum coeno-species and can be used for breeding the head smut-resisting coeno-species, the bred head smut-resisting sorghum can avoid the production condition of large-scale head smut in a sorghum field and the purpose of increasing yield and income can be achieved.

Description

Technical field [0001] The invention belongs to the field of agriculture, in particular to a breeding method for silk-spot sorghum. Background technique [0002] Head smut is one of the main diseases that affect the development of sorghum production in my country. It occurs every year in sorghum producing areas. The damage is the most serious in Northeast and North China. The incidence is sometimes as high as 70%, causing great losses in production. Production practice has proved that the use of pesticides or cultivation measures for prevention and control has limitations such as unsuitable implementation, uneconomical, unsatisfactory control effect and environmental pollution. Studies at home and abroad have shown that the main measure to control the disease is to plant resistant varieties. It is necessary to invent a breeding method for sorghum resistant to silk sorghum. At present, the disease resistance test is mainly for field identification. There are problems such as larg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01H1/04C12Q1/18
Inventor 周福平柳青山范娜张桂香张一中赵建武范昕琦张海燕杨彬史红梅
Owner SHANXI ACADEMY OF AGRI SCI SORGHUM RES INST
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