%0 Journal Article %A Haodong DENG %A Meixia YU %A Guangliang WU %A Xin LUO %A Guiting SONG %A Liping CHEN %A Haohua HE %A Jianmin BIAN %T The Detection of QTL Confers Cold Tolerance at the Bud Bursting Period in Rice Using CSSLs Population %D 2021 %R 10.11869/j.issn.100-8551.2021.09.1971 %J Journal of Nuclear Agricultural Sciences %P 1971-1978 %V 35 %N 9 %X

Rice is one of the most important food crops in the world. In order to explore the genes associated with low temperature to lerant in rice at the bud bursting period, the chromosome segment substitution lines (CSSLs) derived 9311 (recipient)/Nipponbare (donor) was used to study the rice cold tolerance. The CSSLs was treated at low temperatures of 7℃ and 15℃ for 7 days after the emerge of rice bud respectively, and then recovered at 28℃ for 3 days. After the treatments, the QTL associated with seed survival rate were detected. Under low temperature treatment at 7℃, two major QTLs, qCS7T10 and qCS7T11 on chromosome 10 and 11, affecting seed survival rate, were detected, with LOD values of 7.26 and 5.87, and contribution of 18.85% and 14.92%, respectively. Under 15℃ low temperature treatment, one major QTL, qCS15T5, was detected. qCS15T5 was located on chromosome 5 of rice, LOD value was 7.61, and the contribution rate was 25.69%. The results showed that the QTLs controlling seed survival rate under different low temperature reatments at the bud bursting period were different. It has laid a certain foundation for future breeding and pyorarniding of more low temperature tolerance QTLs to improve the adaptability of rice to different low temperatures and reduce the impact of low temperature stress on rice bud stage.

%U https://www.hnxb.org.cn/EN/10.11869/j.issn.100-8551.2021.09.1971