A molecular marker assisted selection (MAS) strategy was used to improve the resistance to rice stripe disease of Ninghui 8, the restorer line of japonica hybrid 86 you 8, by advanced backcross with Ninghui 8 as the recurrent parent and Kanto 194 as the donor of the rice stripe disease resistant gene. Markers tightly linked with Stvbi and Rf1a genes were used for selecting the two genes of the ability to recovery the sterility and to resistant the stripe disease, respectively. After identification of the rice stripe disease resistance and investigation of some agronomic traits, 10 resistance improved lines with similar characteristics as Ninghui 8 were developed in BC3F3 generation, and 4 lines with excellent characteristics were selected to cross with malesterile lines A25, A19 and A70, respectively. The results indicated that comprehensive characters of hybrid combinations from improved line2 were significantly better than those from Ninghui 8.
YAO Shu, CHEN Tao, ZHANG Yadong, ZHU Zhen, ZHAO Qingyong, ZHOU Lihui, ZHAO Ling, LI Yusheng, WANG Cailin*
. Improving Resistance to Rice Stripe Disease of Restorer Line Ninghui 8 by Molecular MarkerAssistant Selection[J]. Chinese Journal OF Rice Science, 2014
, 28(1)
: 85
-91
.
DOI: 10.3969/j.issn.1001-7216.2014.01.012
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