Susceptibility to phytophthora cinnamomi of two grapevine rootstock clones after thermotherapy

Date
1984
Journal Title
Journal ISSN
Volume Title
Publisher
South African Society for Enology and Viticulture
Abstract
The grapevine rootstocks 99 Richter clone I/30/1H74 infected with grapevine fleck and leafroll and 99 Richter Prosperi Super subclone 5 infected with stem pitting and leafroll were more susceptible to Phytophthora cinnamomi without treatment than after heat treatment to eliminate viruses. Recent field observations by various local workers (unpublished) and claims by local growers suggested that 99 Richer (Vitis berlandieri P. x V rupestris S.) grapevine rootstock material previously subjected to thermotherapy is more susceptible to Phytophthora cinnamomi Rands than untreated material. This contribution provides data on the effect of thermotherapy on the susceptibility of two 99 Richter rootstock clones to P. cinnamomi.
Description
CITATION: Marais, P. G. & Hattingh, M. J. 1984. Susceptibility to phytophthora cinnamomi of two grapevine rootstock clones after thermotherapy. South African Journal of Enology & Viticulture, 5(2):65-66, doi:10.21548/5-2-2361.
The original publication is available at http://www.journals.ac.za/index.php/sajev
Keywords
Grapevine, Phytophthora cinnamomi, Susceptibility of plants to fungal pathogens, Grapevines -- Diseases and pests
Citation
Marais, P. G. & Hattingh, M. J. 1984. Susceptibility to phytophthora cinnamomi of two grapevine rootstock clones after thermotherapy. South African Journal of Enology & Viticulture, 5(2):65-66, doi:10.21548/5-2-2361