Over-seasons analysis of quantitative trait loci affecting phenolic content and antioxidant capacity in raspberry

Patricia Dobson, Julie Graham, D. Stewart, Rex Brennan, Christine A. Hackett, Gordon J. McDougall

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    This study examined the total phenol content (TPC) and total anthocyanin content (TAC) in ripe fruit of progeny of a mapping population generated from a cross between the European red raspberry cv. Glen Moy (Rubus ideaus var. idaeus) and the North American red raspberry cv. Latham (Rubus ideaus var. strigosus) over five seasons in two different growing environments. Measurements of antioxidant capacity (FRAP and TEAC) were also carried out. TPC was highly correlated with TEAC and FRAP across the entire data set. The subset of anthocyanin content was genotype-dependent but also correlated with TPC, although the proportion of anthocyanin compounds varied between progeny. Quantitative trait locus (QTL) analysis was carried out, and key markers were tested for consistency of effects over sites and years. Four regions, on linkage groups 2, 3, 5, and 6, were identified. These agree with QTLs from a previous study over a single season and indicate that QTL effects were robust over seasons.</p>
    Original languageEnglish
    Pages (from-to)5360-5366
    Number of pages7
    JournalJournal of Agricultural and Food Chemistry
    Issue number21
    Publication statusPublished - 30 May 2012

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