A method for testing the disease resistance of wheat varieties and its application

Abstract

The invention relates to a novel method for testing the disease resistant performance of wheat species, namely a fungi bed germination testing method. The method comprises the following steps: (1) bacterium liquid processing: adding a bacterium liquid that can test the disease resistant performance of wheat into a germination box, and adding a little amount of water to prepare a fungi bed; then adding wheat grains to be tested into the germination box, and supplementing bacterium liquid until the embryo parts of wheat grains are soaked in the bacterium liquid; (2) water contrast treatment: placing the wheat grains on the paper bed of the germination box, and adding water until the water volume is equal to the total bacterium liquid volume; (3) calculating the bacterium hazard ratio; (4) judging the disease resistant performance: judging the disease resistant performance of wheat according to the national or provincial standards on the basis of the bacterium hazard ratio. The provided method has the advantages that the operation is simple and convenient, the results are direct and precise; the operation is easy, thus the error is reduced; the testing and screening periods are shortened; and the method is easy to promote.

Description

technical field [0001] The invention belongs to the technical field of wheat disease-resistant breeding, and in particular relates to a method for testing disease resistance of wheat varieties and screening disease-resistant materials and varieties (lines). Background technique [0002] Wheat head blight is also known as wheat ear dry, rotten wheat head, red wheat head. It mainly causes seedling rot, stem base rot, stalk rot and ear rot, which can be damaged from seedlings to heading. Among them, the most serious impact is ear rot. The tragic loss of wheat scab in 2010 has not yet been made up. In 2012, wheat scab occurred again in the winter wheat area in the south of the Yellow River and Huaihe River, resulting in a significant reduction in wheat production and quality. Susceptible varieties suffered particularly heavy losses, with yield reductions of more than 30%. Heavy losses of 70% to no harvest. The call for selection and breeding of disease-resistant varieties is...

AI Technical Summary

Problems solved by technology

The tragic loss of wheat scab in 2010 has not yet been made up. In 2012, wheat scab occurred again in the winter wheat area in the southern part of the Yellow River and Huaihe River, resulting in a significant reduction in wheat production and quality.

[0008] In this field, we have not yet found a direct, simple and accurate detection and screening method that integrates the strengths of each family and overcomes the shortcomings of each family.

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