QTL mapping in diploid potato by using selfed progenies of the cross S. tuberosum × S. chacoense
| Autor: | Y. Su, Richard G. F. Visser, D. Meijer, Willem Hendrik Lindhout, Ronald C. B. Hutten, R. Rothengatter, Marcela Viquez-Zamora, A.W. van Heusden, H.J. van Eck |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine PBR Breeding for Quality Locus (genetics) Plant Science Horticulture Biology Quantitative trait locus 01 natural sciences Article Homozygosity 03 medical and health sciences PBR Biodiversiteit en Genetische Variatie Laboratorium voor Plantenveredeling Self-compatibility Genetics Inbreeding Allele Diploid potato fungi food and beverages PE&RC Plant Breeding 030104 developmental biology Skin color F2 population Ploidy EPS Agronomy and Crop Science PBR Biodiversity and genetic variation 010606 plant biology & botany |
| Zdroj: | Euphytica Euphytica 214 (2018) 7 Euphytica, 214(7) |
| ISSN: | 0014-2336 |
| DOI: | 10.1007/s10681-018-2191-6 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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