Abstract
Both Mexico and South America are rich in Solanum species that might be valuable sources of resistance (R) genes to late blight (Phytophthora infestans). Here, we focus on an R gene present in the diploid Bolivian species S. avilesii. The genotype carrying the R gene was resistant to eight out of 10 Phytophthora isolates of various provenances. The identification of a resistant phenotype and the generation of a segregating population allowed the mapping of a single dominant R gene, Rpi-avl1, which is located in an R gene cluster on chromosome 11. This R gene cluster is considered as an R gene “hot spot”, containing R genes to at least five different pathogens. High resolution mapping of the Rpi-avl1 gene revealed a marker co-segregating in 3890 F1 individuals, which may be used for marker assisted selection in breeding programs and for further cloning of Rpi-avl1
Original language | English |
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Pages (from-to) | 511-519 |
Journal | American Journal of Potato Research |
Volume | 88 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2011 |
Keywords
- marker-assisted selection
- potato-virus-y
- phytophthora-infestans
- disease-resistance
- quantitative resistance
- cultivated potato
- bulbocastanum
- rflp
- qtl
- microsatellites