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    ZHANG Shi-long, FENG Fa-qiang, PAN Den, HUANG Jun, WANG Guo-hua, YANG Rui-chun, LI Xiao-qin. QTL Mapping for Pericarp Tenderness in Sweet Corn[J]. Journal of South China Agricultural University, 2012, 33(4): 444-447. DOI: 10.7671/j.issn.1001-411X.2012.04.004
    Citation: ZHANG Shi-long, FENG Fa-qiang, PAN Den, HUANG Jun, WANG Guo-hua, YANG Rui-chun, LI Xiao-qin. QTL Mapping for Pericarp Tenderness in Sweet Corn[J]. Journal of South China Agricultural University, 2012, 33(4): 444-447. DOI: 10.7671/j.issn.1001-411X.2012.04.004
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    QTL Mapping for Pericarp Tenderness in Sweet Corn

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    • The genetic linkage map was constructed with 89 SSR markers based on a maize population consisting of 236 F2 individuals from B15(not tender)×B20(tender). The linkage map covering 1 317.2 cM on a total of ten chromosomes with an average interval length of 14.8 cM could be used to locate QTL. The population of 236 F2：3 families were evaluated for pericarp tenderness. With the method of composite interval mapping, four QTLs associated with pericarp tenderness were identified on the 3 rd, 4 rd, and 7rd chromosomes, which explained 3.0%, 1.1%, 1.0% and 6.0% of phenotypic variance, respectively. The additive effects of 4 QTLs were all negative. The results revealed that all the QTLs had come from the parent with good pericarp tenderness, which could decrease pericarp tenderness and improve the tenderness of pericarp trait.
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