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QTL Mapping of Immature Fruit Basal Color in Cucumis sativus L.
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Vegetable and Flower Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Horticultural Crop Biology and germplasm creation，Ministry of Agriculture，Beijing 100081,Vegetable and Flower Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Horticultural Crop Biology and germplasm creation，Ministry of Agriculture，Beijing 100081,Vegetable and Flower Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Horticultural Crop Biology and germplasm creation，Ministry of Agriculture，Beijing 100081,Vegetable and Flower Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Horticultural Crop Biology and germplasm creation，Ministry of Agriculture，Beijing 100081,Vegetable and Flower Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Horticultural Crop Biology and germplasm creation，Ministry of Agriculture，Beijing 100081,Vegetable and Flower Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Horticultural Crop Biology and germplasm creation，Ministry of Agriculture，Beijing 100081

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    Abstract:

    A set of recombinant inbred lines (RILs) population containingS142Slines was constructed by using an inbred line with green immature fruit as female parent (1613, P1) and an inbred line of white immature fruit as male parent (JD7, P2). The phenotypic investigation for each RIL on the immature fruit skin color was performed at commodity maturity and the genotypic identification of each RIL was carried out with sequencing technology. The immature fruit of F1 generation is green peel, and three QTLs controlling the immature fruit color were located on cucumber chromosome 3, with the positions on the genetic map of 1.01cM、3.31cM and 6.10cM and the flanking genetic distance of1.01cM/0.09cM,0.21cM /0.29cM,0.11cM /0.19cM,respectively. Bioinformatics analysis founds 16 candidate genes in the target region. The gene Csa3G904080,Csa3G904100,Csa3G903500 and Csa3G902950 are very likely to be the key gene that regulates the color of cucumber fruit.

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History
  • Received:January 22,2018
  • Revised:March 12,2018
  • Adopted:May 03,2018
  • Online: November 14,2018
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