HUBEI AGRICULTURAL SCIENCES ›› 2018, Vol. 57 ›› Issue (24): 41-45.doi: 10.14088/j.cnki.issn0439-8114.2018.24.011

• Breeding & Cultivation • Previous Articles     Next Articles

The Indica-Japonica Index Identification Methods and Marker-assisted Breeding of Inter-subspecific Hybridization in Rice

JI Wen-jie, LI Yang-sheng   

  1. Wuhan University/National State Key Laboratory of Hybrid Rice,Wuhan 430072,China
  • Received:2018-05-28 Online:2018-12-25 Published:2020-04-01

Abstract: Tall culm,long growth period,low seed setting rate and bad grain filling are the main problems of indica-japonica inter-subspecific hybrid F1 progeny in rice.This article reviewed the advances of indica-japonica index identification technologies,the relationship between parents’ genetic distance and F1 heterosis,and the progress in research on plant hight,heading date,fertility genes,and source-sink relationship,to investigate the prospect of molecular markers in rice breeding,hoping to provide some references for the utilization of inter-subspecific heterosis.

Key words: rice(Oryza sativa L.), inter-subspecific hybridization, indica-japonica index, genetic distance (GD), molecular marker-assisted selection (MAS)

CLC Number: