Genetic dissection of drought tolerance and recovery potential by quantitative trait locus mapping of a diploid potato population.

ABSTRACT: Potato is the third most important staple food crop in terms of consumption, yet it is relatively susceptible to yield loss because of drought. As a first step towards improving drought tolerance in this crop, we set out to identify the genetic basis for drought tolerance in a diploid potato mapping population. Experiments were carried out under greenhouse conditions in two successive years by recording four physiological, seven growth and three yield parameters under stress and recovery treatments. Genotypes showed significant variation for drought and recovery responses. The traits measured had low to moderately high heritabilities (ranging from 22 to 74 %). A total of 47 quantitative trait loci (QTL) were identified, of which 28 were drought-specific, 17 under recovery treatment and two

SUBMITTER: Anithakumari AM 

PROVIDER: S-EPMC3460171 | biostudies-literature | 2012 Oct

REPOSITORIES: biostudies-literature