A kind of wheat head blight resistance breeding method

Abstract

The invention discloses a breeding method capable of resisting wheat scab. The breeding method comprises the steps of 1, selecting a wheat scab high-resistance resource and a breeding stem parent; 2, identifying wheat scab crude toxin selection pressure; 3, conducting hybridization on the wheat scab high-resistance resource and the breeding stem parent to obtain an F1 hybrid; 4, conducting anther culture on the F1 hybrid to obtain a haplobiont; 5, conducting subculture root strengthening on the haplobiont; 6, conducting root soaking doubling on the haplobiont; 7, conducting single plant harvesting on anther cultured seedlings to obtain an anther culture family, and then conducting agronomic character and wheat scab resistance selection to obtain a wheat scab resistance strain. By the adoption of the method, wheat scab resistance breeding is accelerated, wheat scab resistance breeding period is shortened remarkably to three years, and industrial value is high.

Description

technical field [0001] The invention relates to the field of crop genetics and breeding, in particular to a wheat scab resistance breeding method which greatly accelerates the breeding speed of wheat scab resistance and significantly shortens the breeding cycle for scab resistance. Background technique [0002] wheat scab ( Fusarium head blight, FHB), also known as red head miasma, rotten wheat head, wheat ear dry, red wheat head, is one of the major diseases of wheat worldwide, caused by Fusarium asiatica ( Fusarium asiaticum ) and Fusarium graminearum ( F. graminearium ), mainly occurs in warm and humid areas. The wheat region in the middle and lower reaches of the Yangtze River and the spring wheat region in the eastern northeast of China are the main epidemic areas of the disease. Fusarium graminearum is the main pathogen, accounting for 94.5% of the pathogens of wheat scab. After the 1960s, scab in the Guanzhong irrigation area of ​​Shaanxi became more and more se...

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Problems solved by technology

[0009] The purpose of the present invention is to provide a method that greatly accelerates the breeding speed of wheat scab resistance and significantly shortens the time of wheat scab resistance breeding for the defects of the existing wheat scab disease-resistant breeding, such as the long breeding cycle, the need for a large amount of manual field screening, and low efficiency. Breeding method for wheat head blight resistance in mildew resistance breeding cycle

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