QTL Analysis of β-carotene Content inCucumis melo L. Flesh

doi:10.3969/j.issn.1000-7091.2012.05.015

Abstract

Abstract: QTL mapping of the β-carotene was useful for relative gene cloning and the molecular assisted breeding to cultivate high-quality melon.A genetic map enriched for β-carotene content was constructed,using a F2 population developed from a cross between two species which have great differences in fruit color：200930 and 200932.The map included 154 SSR markers,of which 77 were newly developed from fruit EST.The genetic map consisted of 17 linkage groups spanning 1 663.5 cM with an average of 10.8 cM between markers.Total three QTLs for β-carotene content were detected.These QTLs were mapped on linkage groups 1,4(Chr4),7(Chr7) respectively.Two QTLs explained phenotypic variation more than 15%.The QTL β-car1 which was mapped on the first linkage group explained up to 26.9% of the phenotypic variances.

Key words: Cucumis melo L., SSR markers β-carotene, Genetic map QTL

CLC Number:

S652

Li-hua, WANG Huai-song, FU Qiu-shi, ZHU Hui-qin. QTL Analysis of β-carotene Content inCucumis melo L. Flesh[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2012, 27(5): 80-85. doi: 10.3969/j.issn.1000-7091.2012.05.015.

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