A linkage map of chickpea (Cicer arietinum L.) based on population from ILC3279×ILC588 crosses: Location of genes for time to flowering, seed size and plant height
2015
Quantitative traits of seed size, plant height and days to flowering were
studied in a chickpea intraspecific F3:4 lines population derived from a
ILC3279×ILC588 cross. The lines were genotyped with random amplified
polymorphic DNA (RAPD), universal rice primer (URP) and sequence tagged
microsatellite site (STMS) markers, and a genetic map composed of 7 linkage
groups (LGs) covering 285.3 cM was constructed. Quantitative trait loci
(QTLs) for the three characters were detected in LG2, LG3 and LG4. Two QTLs
for days to flowering were detected on LG2 and LG3. These two QTLs accounted
for 58% of the total phenotypic variation for days to flowering. A QTL for
plant height was located in LG3 explaining around 42% of the variation. This
trait was shown to be under a major gene control. For 100-seed weight, a QTL
located in LG4 explained around 37% of the phenotypic variations. This
information can be used to formulate the an efficient breeding strategy for
improvement of time to flowering in short-season temperate environments,
plant height with more reproductive biomass and improved yield with bigger
seed size in chickpea.
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