Yellow rust control by wheat genetic polymorphism

Abstract

A method for controlling the wheat stripe rust by its genetic diversity includes such steps as choosing 2-10 varieties of wheat, measuring their genetic differences, germination rate and the weight of 1000 grains, equivalent mixing of their seeds, and sowing.

Description

Technical field: [0001] The invention relates to a method for controlling wheat stripe rust, which belongs to the field of plant protection. Background technique: [0002] Wheat stripe rust is the most important disease in my country's wheat production. It is widely distributed, highly prevalent and seriously harmful. Since 1950, the disease has caused disasters many times. In 1950, 1964 and 1990, the wheat stripe rust pandemic caused a reduction in wheat production of 6 billion kg, 3.2 billion kg and 2.5 billion kg respectively. Production practice at home and abroad has proved that the loss of variety resistance to stripe rust is one of the root causes of the periodic epidemic of wheat stripe rust. The loss of variety resistance to stripe rust is a worldwide problem in wheat production. It is a new problem produced after the large-scale single planting of improved wheat varieties in various countries in the 1920s and 1930s. According to reports (Kilpatrik, R.A, 1976), fr...

AI Technical Summary

Problems solved by technology

However, the long-term large-scale planting of single disease-resistant varieties and the extensive use of pesticides and chemical fertilizers have made the farmland ecosystem increasingly simple and fragile, the agricultural ecological environment has seriously deteriorated, and the epidemic cycle of diseases has become shorter and shorter, seriously hindering the improvement of wheat yield and quality.