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Studies on the resistance of grapevine to powdery mildew
Author(s) -
LI H.
Publication year - 1993
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1993.tb01566.x
Subject(s) - powdery mildew , biology , cultivar , vitis vinifera , inoculation , plant disease resistance , interspecific hybridization , hybrid , pathogenicity , botany , resistance (ecology) , horticulture , agronomy , gene , genetics , microbiology and biotechnology
Studies of 68 cultivars of Vitis vinifera and two interspecific hybrids inoculated with four naturally occurring isolates of Uncinula necator demonstrated variation for pathogenicity between isolates and variation in resistance between cultivars. There was no specific interaction between the cultivars and the isolates. The progenies produced either by selling or hybridization of cultivars of V. vinifera always contained some resistant individuals regardless of the parental resistance ratings. However, the proportion of resistant plants was positively correlated to the level of resistance of the parent(s). The results indicate that ‘minor’ resistance genes exist in the cultivars of V. vinifera , and that resistance to U. necator could be improved by recurrent selection.