Mapping of rice Ur1 (Undulated rachis-1) gene with effect on increasing spikelet number per panicle and sink size, and development of selection markers for the breeding by the use of Ur1.

@article{Imai2009MappingOR,
  title={Mapping of rice Ur1 (Undulated rachis-1) gene with effect on increasing spikelet number per panicle and sink size, and development of selection markers for the breeding by the use of Ur1.},
  author={Katsunori Imai and Masayuki Murai and Yin Hao and Yuki Chiba and Ayano Chiba and Ryuji Ishikawa},
  journal={Hereditas},
  year={2009},
  volume={146 6},
  pages={260-8}
}
Ur1 enhances secondary rachis-branching, resulting in more spikelets per panicle. This genic effect can increase grain yield by enlarging sink size. We conducted mapping of Ur1 using SSR markers, and detected markers usable for the MAS (marker-assisted selection) for Ur1. Three Ur1 isogenic lines of recurrent parents Taichung 65, 'Shiokari' and 'Nishihikari'('T(U)', 'S(U)' and 'N(U)', respectively) were used. SSR-marker analysis indicated that each isogenic line had a non-substituted region… CONTINUE READING

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