Resistance to grape phylloxera in <i>Vitis vinifera</i> x <i>V. rotundifolia</i> grape hybrids

Authors

  • E. Firoozabady
  • H. P. Olmo

DOI:

https://doi.org/10.5073/vitis.1982.21.1-4

Abstract

A population of 278 offspring generated by crosses among 26 parents (some quasi F1 hybrids of Vitis vinifera x V. rotundifolia), some of the parents, 3 V. vinifera x V. rotundifolia hybrids (VR), Muscat of Alexandria (susceptible control), and V. rupestris du Lot (St. George) (resistant control), all grown in the vineyard of the University of California at Davis, were tested in a greenhouse for resistance to the grape phylloxera, Phylloxera vitifoliae FITCH. Some of the seedlings, a parent, and the 3 VR hybrids showed resistance to the pest and verified by retesting. The uses of the resistant plants as rootstocks or in a vine breeding project are discussed.

Die Reblausresistenz von Vitis-vinifera x V.-rotundifolia-Kreuzungen

Eine Population von 278 Nachkommen aus Kreuzungen zwischen 26 Elternreben (Quasi-F1-Bastarde aus Vitis vinifera x V. rotundifolia), etliche dieser Eltern, 3 V.- vinifera x V.-rotundifolia-Kreuzungen (VR), Muskat von Alexandria als anfällige Kontrolle sowie V. rupestris du Lot (St. George) als resistente Kontrolle - sämtliche Reben aus einer Anlage der Universität von Kalifornien, Davis - wurden im Gewächshaus auf die Resistenz ihrer Wurzeln gegen die Reblaus geprüft. Einige der Sämlinge, 1 Elternrebe und die 3 VR-Kreuzungen erwiesen sich, auch bei einer zweiten Prüfung, als reblausresistent. Die Verwendung der resistenten Reben als Unterlagen oder zur Züchtung von Ertragsreben wird diskutiert.

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Published

2016-02-09

Issue

Vol. 21 No. 1 (1982): Vitis

Section

Article

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