Orginal Article

Genetic Improvement of Japonica Rice Variety Wuyujing 3 for Stripe Disease Resistance and Eating Quality by Pyramiding Stv-bi and Wx-mq

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  • 1Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Jiangsu High Quality Rice R&D Center / Nanjing Branch of China National Center for Rice Improvement, Nanjing 210014, China
    2Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China

Received date: 2015-06-03

  Accepted date: 2015-10-08

  Online published: 2015-12-31

Abstract

Japonica rice variety Kanto 194 as the donor of resistance gene Stv-bi and low-amylose content gene Wx-mq was used to improve the resistance and eating quality of Wuyujing 3 by the breeding strategy of backcross. In continuous backcross and selfcross generations, the related molecular markers with Stv-bi and Wx-mq genes were utilized for genotypic detection by associated with resistance identification of rice stripe disease and agronomic traits selection. Finally, 10 improved lines with homozygous genotype Stv-biStv-biWx-mqWx-mq were obtained from BC3F4 generation. The results of comparative analysis indicated that most characters of these lines were consistent with those of recipient parent Wuyujing 3, except for the improved resistance, appearance and eating quality. By evaluation of the comprehensive performance of them, two excellent lines K01 and K04 were selected for further experiments.

Cite this article

Tao Chen, Hao Wu, Ya-dong Zhang, Zhen Zhu, Qi-yong Zhao, Li-hui Zhou, Shu Yao, Ling Zhao, Xin Yu, Chun-fang Zhao, Cai-lin Wang . Genetic Improvement of Japonica Rice Variety Wuyujing 3 for Stripe Disease Resistance and Eating Quality by Pyramiding Stv-bi and Wx-mq[J]. Rice Science, 2016 , 23(2) : 69 -77 . DOI: 10.1016/j.rsci.2016.02.002

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