Hybrid rice variety breeding and producing method suitable for safe, high-efficiency and mechanized seed production

Abstract

The invention relates to a method for hybrid rice variety breeding and safe and high-efficiency seed production by use of sensitivity character of a weed killer and color character of a specific rice husk. The method is characterized in that marker characters (weed killer sensitive lethal and specific rice husk color) are utilized and genetic improvement methods such as hybridization, backcrossing, self-crossing and the like are comprehensively utilized, double differences of the rice husk color and the weed killer sensitivity are created between parents of hybrid rice, male parent and female parent of the hybrid rice, containing different marker characters and suitable for mechanized seed production, are cultivated, the weed killer is sprayed for killing the male parent and the sorting technology of a seed color sorter is adopted according to the different marker characters after mechanical mixed sowing (transplanting), so that under the condition that the purity of the hybrid seed is guaranteed, the mechanized hybrid rice seed production is realized, the seed production efficiency is improved, and safe and high-efficiency production of the hybrid rice seed is achieved.

Description

technical field [0001] The invention relates to the field of crop breeding, in particular to a method for breeding and producing hybrid rice varieties for safe and efficient mechanized seed production. Background technique [0002] Since the successful implementation of the three-line system in the 1970s, the popularization and application of hybrid rice has made significant contributions to food security in my country and the world. However, due to the many links and complicated procedures of hybrid rice seed production, it relies too much on intensive human labor, and the production efficiency is relatively low. The research and establishment of hybrid rice variety breeding suitable for mechanized operation and safe and efficient seed production technology are of positive significance for reducing the cost of hybrid rice seed production and alleviating the difficulties of serious shortage of rural labor force brought about by urbanization. In existing reports and patent a...

AI Technical Summary

Problems solved by technology

A lot of practice shows that the color sorter has limited ability to remove impurities, especially when the proportion of impurities is large, it often needs to repeat color sorting many times to get the effect, the cost is high, and the efficiency is difficult to improve, so the application of this method is also limited