Susceptibility of Grape-vine Rootstocks to Strains of Agro bacterium tumef aciens biovar 3

Authors

  • J.H.S. Ferreira Viticultural and Oenological Research Institute, Stellenbosch
  • F.G.H. van Zyl Plant Protection Research Institute, Stellenbosch

DOI:

https://doi.org/10.21548/7-2-2334

Abstract

Forty grape-vine rootstocks were inoculated with five strains of Agrobacterium tumefaciens biovar 3 in a field trial. Grape-vine material like Paulsen 775 was immune to all strains whereas Kober 125 AA, Freedom, 3309 C, Harmony, Solonis, 101-14 Mgt., Berlandieri 13/5 and Kober 5BB appeared to be resistant. Jacquez, US 2-1, US 24-23, Muscat d' Alexandrie and US 24-10 were the most susceptible. Host range differences occurred among the five strains of A. tumefaciens on the different rootstock cultivars. Five different host range patterns were evident. A. tumefaciens biovar 3 strain 1771 was the most virulent and strain 2221 was the least virulent of the strains used.

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Published

2017-05-09

Issue

Vol. 7 No. 2 (1986)

Section

Articles

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