, 214:47 | Cite as

Characterization and fine mapping of qPE12, a new locus controlling rice panicle exsertion

  • Chunfang Zhao
  • Qingyong Zhao
  • Ling Zhao
  • Lihui Zhou
  • Tao Chen
  • Shu Yao
  • Wenhua Liang
  • Yadong Zhang
  • Cailin WangEmail author


Panicle exsertion is an important agronomic trait involved in pollination and hybrid rice seed production. The identification of genes controlling panicle exsertion will play a central role in hybrid rice breeding. C115, a chromosome segment substitution line carrying introgression segments of Nipponbare in genetic background of indica variety 9311, had significantly shortened panicle exsertion, uppermost internode length and plant height. Genetic analysis in F2 and F3 populations derived from a cross of C115 and 9311 indicated that the shortened panicle exsertion of C115 was recessive and controlled by a single Medelian factor, and the allele from Nipponbare decreased the phenotypic value. Primary mapping suggested qPE12, the Nipponbare introgression segment locating on the long arm of chromosome 12, was responsible for this phenotypic variation. Based on map-based cloning strategy, fine mapping was carried out with a total of 1130 recessive individuals selected from F2 and F3 populations, delimiting qPE12 to a 190-kb region. This result provides important information for isolation of a new gene controlling panicle exsertion in the future.


Rice (Oryza sativa L.) Panicle exsertion Uppermost internode elongation Fine mapping 



This research was financially supported by the National Natural Sciences Foundation of China (31200144), the Jiangsu Agriculture Science and Technology Innovation Fund (CX[13]5001) the National Key Technology Support Program project (2015BAD01B02) and the key research and development projects of Jiangsu Province(BE2016370).

Compliance with ethical standards

Conflict of interest

The authors declare no conflict of interest.

Supplementary material

10681_2017_2104_MOESM1_ESM.docx (16 kb)
Supplementary material 1 (DOCX 16 kb)


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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  • Chunfang Zhao
    • 1
  • Qingyong Zhao
    • 1
  • Ling Zhao
    • 1
  • Lihui Zhou
    • 1
  • Tao Chen
    • 1
  • Shu Yao
    • 1
  • Wenhua Liang
    • 1
  • Yadong Zhang
    • 1
  • Cailin Wang
    • 1
    Email author
  1. 1.Institute of Food Crops, Jiangsu High Quality Rice Research and Development Center, Nanjing Branch of China National Center for Rice ImprovementJiangsu Academy of Agricultural SciencesNanjingChina

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