Purposeful breeding method for restoring-line of three way cross type hybrid rice

Abstract

A directional culture method for the restoring line of three-line hybridized rice includes such steps as hybridization between the three-line hybridized rice as female parent and the excellent rice as recurrent male parent, and backcrossing multiple times. Its advantages are high speed and efficiency, and excellent characteristics of resultant cross rice.

Description

technical field

[0001] The invention belongs to the technical field of hybrid rice breeding. technical background

[0002] In the 1970s, China took the lead in breeding and popularizing three-line hybrid rice in the world. So far, three-line hybrid rice accounts for about 90% of the area of ​​hybrid rice, and it is still the main way to utilize rice heterosis. The representative works discussing the selection method of restorer lines in three-line hybrid rice include:

[0003] 1. Rice male sterility biology. Edited by Zhu Yingying, 2000. Wuhan University Press; 426-438

[0004] 2. Heterosis and hybrid rice breeding. [India] By S.S. Virmani. (Heterosis and Hybrid Rice Breeding. Springer-Verlay Berlin Heidelberg, 1994. Printed in Germany). Yang Rencui, translated by Chen Shunhui. 1996. Fujian Science and Technology Press; 73-82

[0005] 3. Rice breeding. Edited by Min Shaokai, Shen Zongtan, and Xiong Zhenmin. 1996. China Agricultural Press; 227-230

[0006] 4. ...