Linkage mapping and quantitative trait loci analysis of sweetness and other fruit quality traits in papaya.

ABSTRACT:

Background

The identification and characterisation of quantitative trait loci (QTL) is an important step towards identifying functional sequences underpinning important crop traits and for developing accurate markers for selective breeding strategies. In this study, a genotyping-by-sequencing (GBS) approach detected QTL conditioning desirable fruit quality traits in papaya.

Results

For this, a linkage map was constructed comprising 219 single nucleotide polymorphism (SNP) loci across 10 linkage groups and covering 509 centiMorgan (cM). In total, 21 QTLs were identified for seven key fruit quality traits, including flesh sweetness, fruit weight, fruit length, fruit width skin freckle, flesh thickness and fruit firmness. Several QTL for flesh sweetness, fruit weight, length, w

SUBMITTER: Nantawan U 

PROVIDER: S-EPMC6815024 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature