Cultivation method for high-yield japonica rice variety with good taste

Abstract

The invention discloses a cultivation method for a high-yield japonica rice variety with a good taste. On the basis of a high-yield disease-resistant breeding method, by using a chalkiness observation device, a near-infrared quality analysis and determination device and a rice grain taste analyzer, staring from selection of a parent, high-quality japonica rice varieties which are excellent in quality, and contains 6%-9% of rice grain protein and 12%-20% of amylose in Lingshui, Hainan and the lower-middle reaches of yangtze river basin are selected as female parents, the female parent are hybridized with mainly-popularized japonica rice varieties which are used as male parents and produced in the same period, starting from F2, the protein content and amylose content are used as selection pressure, rice grains containing 6%-9% of protein and 15%- 20% of amylose are selected, starting from F3, the chalk white rate and chalkiness degree are used as selection pressure, and single plants with the chalk white rate smaller than 30% and chalkiness degree smaller than 5% are selected, so that high-yield disease-resistant japonica rice new strains with excellent appearance and taste can be conveniently cultivated directionally; by adopting the cultivation method disclosed by the invention, the cultivated japonica rice variety has quality environment insensitivity, is stable among years and is unlikely to influence by temperature and light conditions.

Description

technical field [0001] The invention relates to a plant breeding method, in particular to a method for cultivating japonica rice varieties with high quality, taste and high yield. Background technique [0002] Rice is the most important food for our people. With the improvement of people's living standards and the trend of increasing population and shrinking cultivated land, the rigid demand for high-quality edible rice is increasing day by day, and the contradiction between demand and supply continues to intensify. Therefore, increasing rice production, improving rice eating quality, and increasing stable supply are major issues of common concern both at home and abroad. The cultivation and promotion of high-quality, tasty and high-yielding varieties can ensure food security in terms of both the quantity and quality of rice. [0003] my country's rice yield breeding has achieved world-renowned achievements, but the research on quality breeding is relatively lagging behind...

AI Technical Summary

Problems solved by technology

In recent years, the goal of rice breeding has shifted from high-yield, high-quality, and multi-resistance to high-quality, high-yield, and multi-resistance. High-quality rice has become the primary goal of rice breeding in my country. The improvement of rice appearance and quality has progressed rapidly. high-quality varieties, but the taste quality is still difficult to compare with Japanese high-quality rice, and has not yet reached the standard of "both good-looking and delicious"

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