Crown gall resistance in East-Asian <i>Vitis</i> species and in their <i>V. vinifera</i> hybrids
DOI:
https://doi.org/10.5073/vitis.1984.23.21-26Abstract
Crown gall resistance of ca. 50 interspecific hybrids obtained from Vitis vinifera mainly with V. amurensis was tested. Resistance to Agrobacterium tumefaciens strain AT-1 was expressed via 4 generations. Further 11 strains representing the 3 biotypes of the pathogen did not cause tumors on the hybrids A6/1 and A5/43. A6/1 has already been certificated as variety Kunbarát. According to the results achieved, resistance breeding could provide an effective means to prevent crown gall disease of grapevine.
Resistenz gegen Mauke bei ostasiatischen Vitis-Arten und ihren Kreuzungen mit V. vinifera
Ca. 50 interspezifische Kreuzungen von Vitis vinifera überwiegend mit V. amurensis wurden auf ihre Resistenz gegen Mauke untersucht. Die Resistenz gegen Agrobacterium tumefaciens, Stamm AT-1, manifestierte sich über 4 Generationen. Die Kreuzungen A6/1 und A5/43 waren gegen weitere 11 Stämme von A. tumefaciens resistent. Die resistente Kreuzung A6/1 ist unter dem Sortennamen Kunbarát bereits staatlich anerkannt. Aufgrund der vorliegenden Ergebnisse dürfte die Resistenzzüchtung eine wirksame Methode zum Schutz der Weinrebe gegen die Mauke sein.
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