Abstract
To identify quantitative trait loci (QTLs) for flower-related characters in Luffa, a genetic map was constructed by using 110 F2 individuals derived from interspecific hybrids between Luffa acutangula Roxb. (inbred line ‘28-0-0’) and L. cylindrica Roem. (inbred line ‘37-0-1-1’). A total of 258 sequence-related amplified polymorphism markers were mapped on 24 linkage groups, spanning 822.86 cM, with a mean marker interval of 3.49 cM. Then, 23 QTLs were identified through composite interval mapping, and included nine, eight and six for first female flower node, male flower diameter and flowering time, respectively. Importantly, the above QTLs individually explained 0.03–24.61 % of total phenotypic variance of the corresponding trait. These findings provide a basis for molecular marker assisted breeding in Luffa.
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