Foliar Resistance to a Natural Population of Plasmopara viticola in Some Grapevine Varieties Grown in Turkiye

Küçük Resim Yok

Tarih

2024

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Wiley

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

It is critical to use a population of the pathogen that contains different strains to determine the resistance of grapevine varieties to the downy mildew pathogen Plasmopara viticola in a specific region. This study tested six local grape varieties (Cavus, Kalecik Karasi, Muskule, Papaz Karasi, Sultana and Yapincak), eight Turkish registered varieties (Baris, Bozbey, Guzgulu, Ozer Karasi, Recel uzumu, Tekirdag Cekirdeksizi, Trakya & Idot;lkeren and Yalova Incisi) and seven varieties of foreign origin (Cabernet Sauvignon, Cardinal, Chardonnay, Cinsault, Isabella, Semillon and Gamay) using detached leaf and leaf disc assays with pathogen populations collected from vineyards. There was a significant correlation for disease severity between the two assay methods. No sporulation was observed on the varieties Cavus and Isabella in both assay methods. The variety Yapincak had very low disease severity (2.00%) in the leaf disc assay, and the pathogen did not sporulate on this variety in the detached leaf assay. Cluster analysis was performed to determine the resistance level of the varieties against the pathogen, as different disease severities were observed in some varieties depending on the test method used, and the 21 varieties were classified into four clusters. Baris, Bozbey, Cardinal, Cavus, Isabella, Semillon and Yapincak in Cluster I exhibited the lowest disease severity mean (2.88%), while those in Cluster 3, including Cabernet Sauvignon, Guzgulu, Papaz Karasi and Yalova Incisi, had the highest disease severity mean (56.75%). These varieties in Clusters 1 and 3 were considered highly resistant and highly susceptible, respectively. Leaf hair density, as reported in official variety descriptions, did not associate with reduced disease severity in the two assays. This study assessed the response of grapevine varieties to the P. viticola population in the region for the first time. The highly resistant and resistant varieties identified will provide new material for breeders and contribute to the improvement of organic viticulture in the area.

Açıklama

Anahtar Kelimeler

grapevine, host resistance, Plasmopara viticola, susceptibility, Vitis vinifera, Vitis vinifera x Vitis labrusca

Kaynak

Journal of Phytopathology

WoS Q Değeri

N/A

Scopus Q Değeri

Q2

Cilt

172

Sayı

5

Künye