Mechanization seed making method of hybridized rice using three line method

Abstract

A mechanized method for preparing the seeds of three-line hybridized paddy rice includes such steps as hybridizing the rice whose husk color is different from rormal color with the maintenance line whose husk color is normal to obtain the maintenance-line seeds whose husk color is different from normal color; transfer culturing of the sterile-line seeds whose husk color is different from normal color, mixing the maintenance-line seeds with the sterile-line seeds, mechanical sowing, harvesting; and further using color selecting machine for color separation to obtain the hybridized seeds and recovery-line seeds.

Description

technical field [0001] The invention belongs to rice breeding, and relates to hybrid rice seed production technology, in particular to a method for mechanized production of three-line hybrid rice seeds. Background technique [0002] The utilization of heterosis in rice (Oryza sativa L.) can be divided into three-line method and two-line method. At present, the utilization of heterosis is mainly based on the three-line method. The main way to utilize the heterosis of rice in the three-line method is to achieve strong selection by cultivating the male sterile line (A), the male sterile maintainer line (B) and the male sterile restorer line (R) (collectively called the three lines). The purpose of combining advantages. As early as 1958, Kiyoshi Katsuo of Tohoku University in Japan carried out research on male sterile lines for the use of rice heterosis, and found that China's red awn wild rice could cause male sterility in Fujisaka 5. In 1966, Xincheng C...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is the mechanization of hybrid rice seed production, to overcome the above-mentioned disadvantages of separate planting, artificial ...