Breeding and Utilization of Excellent Indica Thermo-sensitive Genic Male Sterile Line 504S with High Combining Ability
Online published: 2022-05-24
504S is a new indica thermo-sensitive genic male sterile line in rice, bred by the Rice Research Institute of Anhui Academy of Agricultural Sciences by self-crossing for five years, derived from the cross of 1892S and 65B. It has the characteristics of good plant type, high chlorophyll content, strong tillering ability, low critical temperature of fertility alteration, high outcrossing rate, high combining ability and so on. It was registered by the Anhui Provincial Crop Variety Approval Committee in 2013. The new two-line hybrid indica rice combinations Liangyou 5078 and Liangyou 5077 bred from 504S have the characteristics of high quality, high yield and stress resistance, and have been registered and released for commercial production by the National Crop Variety Approval Committee in 2019 and 2020 respectively.
Key words： hybrid rice; thermo-sensitive genic male sterile; 504S; combining ability
CONG Xihan, RUAN Xinmin, SHI Fuzhi, DU Hongyang, LUO Yuxiang, LUO Zhixiang . Breeding and Utilization of Excellent Indica Thermo-sensitive Genic Male Sterile Line 504S with High Combining Ability[J]. China Rice, 2022 , 28(3) : 106 -108 . DOI: 10.3969/j.issn.1006-8082.2022.03.022
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