Method for screening japonica rice with high taste value and high protein content by ratio of brown rice protein content to glutamic acid content

Abstract

The invention relates to the field of rice breeding, in particular to a method for screening japonica rice with high taste value and high protein content by ratio of brown rice protein content to glutamic acid content or ratio of the glutamic acid content to the brown rice protein content. The method has the advantages that materials with high taste value and high protein content can be selected out, materials which high taste value but medium or relatively low protein content can be identified and selected out, materials with relatively low taste value can be identified and eliminated, and the like.

Description

technical field [0001] The invention relates to the field of rice breeding, in particular to a method for screening japonica rice varieties with high taste and protein content by using the nitrogen-to-grain ratio (the ratio of brown rice protein to glutamic acid content, or the reciprocal grain-to-nitrogen ratio). Background technique [0002] Rice is the main food for more than half of the population in my country and the world. The protein content of rice is an important indicator of nutritional quality, which is usually converted by measuring the N content. Japonica rice is grown in Japan and South Korea, and the research results show that the protein content is significantly negatively correlated with the taste of rice, that is, rice with low protein content tastes good, and vice versa. In order to meet consumers' requirements for food taste, protein content has been selected as far as possible in rice breeding lower material. Japonica rice is grown in the north of my c...

AI Technical Summary

Problems solved by technology

Since 1987, the inventor has adopted the method of "multivariate hybridization, combination of mixed lines, ideal plant type, and optimal selection" to breed high-quality and high-yield rice, and selected Shennong 8801 from the combination of "Shennong 91 / S22 / / Fengjin" , Shennong 8718, Shennong 8834, Shendao 4, etc. Among the parents, Shennong 91 and S22 are indica-japonica hybrid offspring, and Fengjin is a high-quality Japanese variety. Therefore, its offspring Shennong 8718, Shennong 8834, Shendao No. 4 was tasted before the regional test, and the taste was good, but the protein content of these varieties (lines) was as high as 9.2% to 9.7% in the regional test, which was inconsistent with the research results at home and abroad.

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