Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 539255
Title Multi-environment QTL analysis of plant and flower morphological traits in tetraploid rose
Author(s) Bourke, Peter M.; Gitonga, Virginia W.; Voorrips, Roeland E.; Visser, Richard G.F.; Krens, Frans A.; Maliepaard, Chris
Source Theoretical and Applied Genetics 131 (2018)10. - ISSN 0040-5752 - p. 2055 - 2069.
Department(s) Laboratory of Plant Breeding
WUR PB Kwantitatieve Aspecten
WUR PB Siergewassen, Tissue Culture
PBR Kwantitatieve Aspecten
Publication type Refereed Article in a scientific journal
Publication year 2018

Key message: Rose morphological traits such as prickles or petal number are influenced by a few key QTL which were detected across different growing environments—necessary for genomics-assisted selection in non-target environments. Abstract: Rose, one of the world’s most-loved and commercially important ornamental plants, is predominantly tetraploid, possessing four rather than two copies of each chromosome. This condition complicates genetic analysis, and so the majority of previous genetic studies in rose have been performed at the diploid level. However, there may be advantages to performing genetic analyses at the tetraploid level, not least because this is the ploidy level of most breeding germplasm. Here, we apply recently developed methods for quantitative trait loci (QTL) detection in a segregating tetraploid rose population (F1 = 151) to unravel the genetic control of a number of key morphological traits. These traits were measured both in the Netherlands and Kenya. Since ornamental plant breeding and selection are increasingly being performed at locations other than the production sites, environment-neutral QTL are required to maximise the effectiveness of breeding programmes. We detected a number of robust, multi-environment QTL for such traits as stem and petiole prickles, petal number and stem length that were localised on the recently developed high-density SNP linkage map for rose. Our work explores the complex genetic architecture of these important morphological traits at the tetraploid level, while helping to advance the methods for marker–trait exploration in polyploid species.

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