Identification of QTLs for fruit quality traits in Japanese apples: QTLs for early ripening are tightly related to preharvest fruit drop

Publication Overview
TitleIdentification of QTLs for fruit quality traits in Japanese apples: QTLs for early ripening are tightly related to preharvest fruit drop
AuthorsKunihisa M, Moriya S, Abe K, Okada K, Haji T, Hayashi T, Kim H, Nishitani C, Terakami S, Yamamoto T
TypeJournal Article
Journal NameBreeding science
Volume64
Issue3
Year2014
Page(s)240-51
CitationKunihisa M, Moriya S, Abe K, Okada K, Haji T, Hayashi T, Kim H, Nishitani C, Terakami S, Yamamoto T. Identification of QTLs for fruit quality traits in Japanese apples: QTLs for early ripening are tightly related to preharvest fruit drop. Breeding science. 2014 Sep; 64(3):240-51.

Abstract

Many important apple (Malus × domestica Borkh.) fruit quality traits are regulated by multiple genes, and more information about quantitative trait loci (QTLs) for these traits is required for marker-assisted selection. In this study, we constructed genetic linkage maps of the Japanese apple cultivars 'Orin' and 'Akane' using F1 seedlings derived from a cross between these cultivars. The 'Orin' map consisted of 251 loci covering 17 linkage groups (LGs; total length 1095.3 cM), and the 'Akane' map consisted of 291 loci covering 18 LGs (total length 1098.2 cM). We performed QTL analysis for 16 important traits, and found that four QTLs related to harvest time explained about 70% of genetic variation, and these will be useful for marker-assisted selection. The QTL for early harvest time in LG15 was located very close to the QTL for preharvest fruit drop. The QTL for skin color depth was located around the position of MYB1 in LG9, which suggested that alleles harbored by 'Akane' are regulating red color depth with different degrees of effect. We also analyzed soluble solids and sugar component contents, and found that a QTL for soluble solids content in LG16 could be explained by the amount of sorbitol and fructose.

Projects
This publication contains information about 1 projects:
Project NameDescription
Apple fruit quality traits-Kunihisa-2014
Featuremaps
This publication contains information about 2 maps:
Map Name
Apple-OA-F1-Orin
Apple-OA-F1-Akane
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DatabaseAccession
PMID: PubMedPMID:25320559