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Method for breeding head smut-resisting sorghum

A technology for resistance to head smut and head smut, applied in the agricultural field, can solve the problems of large field area, low work efficiency, long time required, etc., and achieves accelerated breeding speed, strong operability, and reduced field breeding. group effect

Active Publication Date: 2017-07-25
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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  • Method for breeding head smut-resisting sorghum

Examples

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Embodiment 1

[0030] Example 1: Breeding of R111*L17

[0031] R111 and L17 were crossed to obtain F1 seeds. The obtained F1 generation seeds were planted in the field, and two generations of self-crossing were continuously planted to obtain F3 generation seeds. The seeds of both generations were selected from single plants resistant to head smut, and the seeds of the F4 generation were harvested.

[0032] Indoor identification of head smut resistance of the F4 generation: taking the resistant single ear of the F4 generation as a unit, 100 seeds per ear were taken for resistance identification in a room with a temperature of 25°C and a relative humidity of 70%.

[0033] The sorghum seeds were planted in the culture box filled with sand, inoculated with 0.5% bacterial soil, and the source was marked with a card. 30 days after emergence, take the seedlings and peel off the outer leaves, leave the growth cones, stain with aniline blue lactic acid staining agent, and check under the microscope w...

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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-resistant sorghum. Background technique [0002] Head smut is one of the main diseases affecting the production and development of sorghum in my country. It occurs every year in sorghum production areas, and it is the most serious in Northeast and North China. The incidence rate is sometimes as high as 70%, causing great losses to production. Production practice has proved that the use of pesticides or cultivation measures to prevent and control has limitations such as unsuitable, uneconomical, unsatisfactory control effects, and environmental pollution. Domestic and foreign studies have shown that the main measure to prevent and control the disease is to plant disease-resistant varieties. To breed silk-smut-resistant sorghum varieties, it is necessary to invent a silk-smut-resistant sorghum breeding method. At present, the disease resistance test is mainly ...

Claims

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Application Information

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Patent Type & Authority Applications(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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