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 539159
Title QTL mapping in diploid potato by using selfed progenies of the cross S. tuberosum × S. chacoense
Author(s) Meijer, D.; Viquez-Zamora, M.; Eck, H.J. van; Hutten, R.C.B.; Su, Y.; Rothengatter, R.; Visser, R.G.F.; Lindhout, W.H.; Heusden, A.W. van
Source Euphytica 214 (2018)7. - ISSN 0014-2336
DOI https://doi.org/10.1007/s10681-018-2191-6
Department(s) EPS
PBR Biodiversiteit en Genetische Variatie
PE&RC
Laboratory of Plant Breeding
WUR PB Breeding for Quality
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Diploid potato - Homozygosity - Inbreeding - Self-compatibility
Abstract

Usually, mapping studies in potato are performed with segregating populations from crosses between highly heterozygous diploid or tetraploid parents. These studies are hampered by a high level of genetic background noise due to the numerous segregating alleles, with a maximum of eight per locus. In the present study, we aimed to increase the mapping efficiency by using progenies from diploid inbred populations in which at most two alleles segregate. Selfed progenies were generated from a cross between S. tuberosum (D2; a highly heterozygous diploid) and S. chacoense (DS; a homozygous diploid clone) containing the self-incompatibility overcoming S locus inhibitor (Sli-gene). The Sli-gene enables self-pollination and the generation of selfed progenies. One F2 population was used to map several quality traits, such as tuber shape, flesh and skin color. Quantitative trait loci were identified for almost all traits under investigation. The identified loci partially coincided with known mapped loci and partially identified new loci. Nine F3 populations were used to validate the QTLs and monitor the overall increase in the homozygosity level.

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