QTL mapping and epistatic interaction analysis in asparagus bean for several characterized and novel horticulturally important traits.

ABSTRACT:

Background

Asparagus bean (Vigna. unguiculata. ssp sesquipedalis) is a subspecies and special vegetable type of cowpea (Vigna. unguiculata L. Walp.) important in Asia. Genetic basis of horticulturally important traits of asparagus bean is still poorly understood, hindering the utilization of targeted, DNA marker-assisted breeding in this crop. Here we report the identification of quantitative trait loci (QTLs) and epistatic interactions for four horticultural traits, namely, days to first flowering (FLD), nodes to first flower (NFF), leaf senescence (LS) and pod number per plant (PN) using a recombinant inbred line (RIL) population of asparagus bean.

Results

A similar genetic mode of one major QTL plus a few minor QTLs was found to dominate each of the four traits, with the

SUBMITTER: Xu P 

PROVIDER: S-EPMC3616928 | biostudies-literature | 2013 Feb

REPOSITORIES: biostudies-literature