4.7 Article

Molecular Mapping of Flowering Time Major Genes and QTLs in Chickpea (Cicer arietinum L.)

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FRONTIERS IN PLANT SCIENCE
卷 8, 期 -, 页码 -

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FRONTIERS MEDIA SA
DOI: 10.3389/fpls.2017.01140

关键词

earliness; flowering time; chickpea; consensus map; QTLs

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  1. CGIAR Research Program on Grain Legumes

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Flowering time is an important trait for adaptation and productivity of chickpea in the arid and the semi-arid environments. This study was conducted for molecular mapping of genes/quantitative trait loci (QTLs) controlling flowering time in chickpea using F-2 populations derived from four crosses (ICCV 96029 x CDC Frontier, ICC 5810 x CDC Frontier, BGD 132 x CDC Frontier and ICC 16641 x CDC Frontier). Genetic studies revealed monogenic control of flowering time in the crosses ICCV 96029 x CDC Frontier, BGD 132 x CDC Frontier and ICC 16641 x CDC Frontier, while digenic control with complementary gene action in ICC 5810 x CDC Frontier. The intraspecific genetic maps developed from these crosses consisted 75, 75, 68 and 67 markers spanning 248.8 cM, 331.4 cM, 311.1 cM and 385.1 cM, respectively. A consensus map spanning 363.8 cM with 109 loci was constructed by integrating four genetic maps. Major QTLs corresponding to flowering time genes efl-1 from ICCV 96029, efl-3 from BGD 132 and efl-4 from ICC 16641 were mapped on CaLG04, CaLG08 and CaLG06, respectively. The QTLs and linked markers identified in this study can be used in marker-assisted breeding for developing early maturing chickpea.

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