Rapid cultivation method of aroma-type high-grade high-quality paddy rice

Abstract

The invention discloses a rapid cultivation method of aroma-type high-grade high-quality paddy rice, comprising the following steps: hybridizing a variety A with traits of slim grains and aroma and a variety B with traits of low chalkiness and high transparency so as to obtain a single cross F1, and preparing a composite cross F1 from the single cross F1 as male parent and a variety C with high thousand grain weight; carrying out aroma gene marker-assisted selection and agronomic trait screening on the composite cross F1 single plants during the seedling stage so as to screen out single plants with aroma gene and excellent agronomic traits, carrying out anther culture to obtain H0-generation anther cultural population, and screening out diploid line; carrying out quality traits screening of H1 generation, inspecting output and resistance, and finally screening out the new fragrant aroma-type high-grade high-quality paddy rice variety. According to the product, thousand grain weight is 25 g and above; rice grain length is 7 mm and above; length-width ratio is greater than or equal to 3.5; content of amylase is 13-18%; chalky grain rate is not higher than 10%; chalkiness degree is not higher than 1%; transparency is Level 1; and head rice rate is 45% and above.

Description

technical field [0001] The invention belongs to the technical field of molecular cell plant breeding, and in particular relates to a rapid cultivation method of fragrant, high-grade and high-quality rice. Background technique [0002] China is a big rice production and consumption country in the world. For quite a long period of time in the past, in order to solve the food shortage, the phenomenon of emphasizing the output and ignoring the quality was quite prominent. With the substantial improvement of my country's grain production capacity, the continuous improvement of people's living standards, and the intensification of international and domestic market competition, the problem of poor rice quality has become increasingly prominent, and has become a major obstacle to the development of rice production. [0003] At present, the high-grade and high-quality rice recognized by everyone refers to a type of rice variety with excellent physical and chemical quality, slender ri...

AI Technical Summary

Problems solved by technology

[0004] According to the supply and demand survey of my country's rice market, high-grade edible rice accounts for more than 10% of the market share, and at least 200,000 hm can be planted in Hubei Province 2 At present, the total planting area of ​​four varieties including Ezhong 5, Jianzhen 2, Exiang 1, and Xiangwan Xian 13 is less than 60,000 hm 2

At present, most rice breeding methods in my country take yield as the primary goal, while the primary goal of high-grade and high-quality rice is quality, and at the same time, yield and resistance must be taken into account. At present, there are no reports on the specific goals and methods of high-grade and high-quality rice breeding in my country.