Selection of Resistance to Phylloxera (Daktulosphaira Vitifoliae Fitch)

Abstract

The results from studies of Bulgarian scientists for obtaining wine and table grapes varieties resistant to low winter temperatures, fungal diseases and pests by the method of interspecies sexual hybridization, including studies in laboratory and field conditions concerning the response of varieties of Vitis vinifera L. and the newly selected interspecies varieties and hybrids to root and leaf form of vine phylloxera (Daktulosphaira vitifoliae Fitch) are presented