Mapping of Fruit Shape and Color Development Traits in Eggplant(Solanum melongena L.) Based on RAPD and AFLP Markers.

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  • Nunome Tsukasa
    National Research Institute of Vegetables, Ornamental Plants and Tea (NIVOT)
  • Ishiguro Keizo
    National Research Institute of Vegetables, Ornamental Plants and Tea (NIVOT)
  • Yoshida Tatemi
    National Research Institute of Vegetables, Ornamental Plants and Tea (NIVOT)
  • Hirai Masashi
    National Research Institute of Vegetables, Ornamental Plants and Tea (NIVOT)

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We have constructed a linkage map of eggplant (Solanum melongena L.) using an F2 population derived from a cross between a breeding line, EPL-1 and an introduced line, WCGR112-8, from India. The two parental lines showed contrasting responses to several pathogens and differences in several morphological traits. Parental lines were screened with 1, 232 random primers for RAPD and 64 primer combinations for AFLP. The link-age map consisted of 181 loci, comprising 88 RAPD and 93 AFLP markers. These markers identified 21 linkage groups spanning 779.2cM with an average distance of 4.9cM. The linkage groups ranged from 1.9 to 95.6cM in length and included 2 to 32 markers, respectively. The fruit shape and color development trait were scored and the linkage to the markers was investigated. The fruit shape showed a significant association with markers on linkage group 2. Color development in fruit, stem and calyx showed a significant association with markers on linkage group 7. These markers may provide valuable information for eggplant breeding.

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