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Breeding method of wheat variety resistant to gibberellic disease infection and expansion

A technology for scab and varieties, applied in the field of breeding of wheat varieties, can solve problems such as lack of identification system, and achieve the effect of improving screening efficiency and application value

Active Publication Date: 2020-12-01
JIANGSU LIXIAHE REGION AGRI RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing identification methods for scab resistance are used for genetic research or identification of resistance to bred varieties, and the identification system applicable to the entire breeding process is relatively lacking. Therefore, it is urgent to establish a combination of infection resistance and Breeding method for wheat scab-resistant varieties resistant to expansion, so as to ensure that the bred varieties have stable scab-resistant properties

Method used

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  • Breeding method of wheat variety resistant to gibberellic disease infection and expansion

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Experimental program
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Effect test

Embodiment 1

[0026] 1. Parent selection

[0027] To screen and identify the resistance level of germplasm resource materials to scab, it is necessary to have above moderate sensitivity or at least one wheat variety (line) with moderate resistance as the parent for hybridization.

[0028] Zhenmai No. 9 was bred by Zhenjiang Agricultural Science Institute in the hilly area of ​​Jiangsu Province. It has red kernels, hard seeds, and high thousand-grain weight. The plant type is slightly loose, the plant height is 86cm, the scab resistance is moderately resistant (MR), and the yield is increased by 5.6%-9.1% compared with the control in various tests.

[0029] Shijiazhuang No. 8 was bred by Shijiazhuang Academy of Agricultural Sciences. It is semi-winter, white grain, hard, plant height 73cm, high resistance to scab (S), and its yield increased by 3.41%-7.18% compared with the control in various tests.

[0030] In order to further improve the yield potential of Huainan wheat area, in 2007, Zhe...

Embodiment 2

[0043] 1. Parent selection

[0044] To screen and identify the red resistance level of germplasm resource materials, it must be more than moderately sensitive or at least one wheat variety (line) with moderate resistance should be used as the parent for cross-matching.

[0045] Zhenmai 168 was bred by Zhenjiang Agricultural Science Institute in the hilly area of ​​Jiangsu. It is spring sex and has a plant height of 85cm. Spike spindle type, red grain, semi-keratin grain. Identification of disease resistance: medium resistance to head blight. Compared with the control, the yield increased by 0.31%-6.2% in all levels of experiments. The protein (dry basis) content is 14.02%-14.73%, the wet gluten content is 28.2%-33.0%, and the stability time is 9.3-10.9 minutes, which belongs to the strong gluten wheat variety.

[0046] Luyuan 502 was jointly bred by the Institute of Atomic Energy Agriculture Application of Shandong Academy of Agricultural Sciences and the Institute of Crop ...

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Abstract

The invention discloses a breeding method of wheat variety resistant to gibberellic disease infection and expansion. The method comprises the following steps: 1) parent selection and F1 generation acquisition; 2) breeding low-generation selection: selecting single plants or single ears from F2 generation to F4 generation, determining gibberellic disease inducing selection pressure by combining diseased wheat grain inoculation with water spraying moisturizing in the field, stopping water spraying, and screening target single plants with preliminary infection resistance; 3) breeding advanced generation selection: for a F5 generation, combining spore liquid spraying inoculation with water spraying moisturizing to further screen out target single plants with infectivity resistance, and for a F6 generation, synchronously identifying the expansion resistance and the infection resistance of a target single plant obtained by the F5 generation in the field by adopting single-flower instillationand spore liquid spraying, and conducting pressurizing and identifying in a greenhouse to obtain the wheat variety with gibberellic disease infection resistance and expansion resistance. The breedingprocess is high in operability and can be used for reference in different wheat areas, the breeding efficiency is improved, and wheat varieties with stable gibberellic disease resistance can be obtained.

Description

technical field [0001] The invention belongs to the field of plant breeding, and in particular relates to a breeding method for a wheat variety resistant to scab infection and expansion. Background technique [0002] Wheat head blight is a worldwide disease caused by Fusarium graminearum. my country is the country where the disease is most serious, and the winter wheat area in the middle and lower reaches of the Yangtze River is the most serious area. With the large area of ​​straw returning to the field, the expansion of irrigated area and global warming, wheat scab has gradually spread to the Huanghuai wheat region. The data shows that the average annual occurrence area of ​​wheat scab in my country was about 60 million mu from 2005 to 2010, and the average annual occurrence area rose to more than 80 million mu from 2011 to 2016. In 2012, the national epidemic occurred, and the incidence area of ​​scab disease exceeded 170 million mu, the yield loss reached 7 billion jin. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/06A01H1/02
CPCA01H1/02A01H1/06
Inventor 张勇胡文静刘健高德荣张春梅蒋正宁高致富吴迪
Owner JIANGSU LIXIAHE REGION AGRI RES INST
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