Method for efficient selective breeding of new odor type rice blast resisting rice variety

Abstract

The invention discloses a method for efficient selective breeding of a new odor type rice blast resisting rice variety. The method is characterized in that eurytopic and high-quality odor type rice restorer fengxianghui No. 1 is taken as a receptor parent, a rice blast resisting rice material containing rice blast resisting genes is taken as a donor parent, the conventional breeding technique is adopted, the high-throughput molecular marker-assisted selection technique, the rice anther in vitro culture technique and the human nose fragrance smelling and resistance field identification means are comprehensively utilized, a resistant improved odor type rice fengxianghui No. 1 restorer with stable fragrance, high rice blast resistance and excellent agronomic trait is prepared, and the odor type rice blast resisting rice variety is obtained through efficient selective breeding by means of combination and measuring matching of the resistant improved odor type rice fengxianghui No. 1 restorer and a sterile line. The method is efficient, quick and low in cost. Meanwhile, the traditional breeding technique and the modern molecular biological technique are effectively combined, the popularization and application values of the variety obtained through selective breeding are high, and the method can meet the requirement of enterprises for commercial breeding.

Description

technical field [0001] The invention belongs to the technical field of molecular breeding, and relates to a breeding method for a new variety of fragrant blast-resistant rice. Law. Background technique [0002] Rice blast is one of the important diseases affecting rice production all over the world. More than 80 countries have reported the occurrence of this disease, and the annual loss of grain is nearly 10 million tons. Breeding and planting disease-resistant varieties is the most effective and safest measure to control rice blast. However, traditional breeding for disease resistance requires a lot of field work and takes a long time. At the same time, the selection of breeding targets is disturbed by many factors. After multiple generations of continuous planting, the resistance of newly bred varieties is due to the physiological characteristics of the blast fungus. Races mutate and lose quickly, and the ability to resist rice blast often declines. Therefore, breeding n...

AI Technical Summary

Problems solved by technology

However, conventional molecular marker detection procedures are complex, time-consuming and labor-intensive, time-consuming and costly for large breeding groups, and difficult to apply to commercial breeding programs on a large scale and on a large scale

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