Identification of disease resistance-linked alleles in Vitis vinifera germplasm
| Autor: | M.L. Prazzoli, Silvia Lorenzi, Michele Perazzolli, Silvia Laura Toffolatti, Osvaldo Failla, Maria Stella Grando |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine Germplasm Environmental Engineering Population lcsh:QR1-502 Introgression Locus (genetics) Plant disease resistance Biology 01 natural sciences lcsh:Microbiology lcsh:Physiology Industrial and Manufacturing Engineering 03 medical and health sciences lcsh:Zoology lcsh:QL1-991 education Genetic diversity education.field_of_study Disease resistance lcsh:QP1-981 food and beverages Horticulture Settore AGR/07 - GENETICA AGRARIA 030104 developmental biology Vitis vinifera Genetic structure Powdery mildew 010606 plant biology & botany |
| Zdroj: | BIO Web of Conferences, Vol 13, p 01004 (2019) |
| Popis: | Introgression of genetic resistance to fungal diseases from American and Asian Vitis species traditionally pursued in grape breeding programs, although facilitated by molecular tools, has an impact on wine quality that still slows down development of competitive varieties. A contribution to the genetic improvement of grapevines for resistance to pathogens may come from unexplored genetic resources of the Eurasian Vitis vinifera L. In the present study, a hundred grapevine accessions from Georgia, Armenia and Azerbaijan were genotyped with SSR markers linked to QTLs for resistance to downy and powdery mildew, and with 21 SSR markers widely used for genetic diversity and relationship analysis. Looking at population genetic structure, Armenian and Azerbaijani accessions fell within the same cluster and were included among the Central Asian grape varieties of a homogeneous dataset, while Georgian accessions formed a separate group. Pattern of SSR alleles flanking the locus Ren1 and associated with resistance to Erysiphe necator in 'Kishmish vatkana', 'Dzhandzhal kara' and other Central Asian cultivars were found in three varieties from the Azerbaijani population that reached very high scores when assessed for PM resistance. |
| Databáze: | OpenAIRE |
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