Volume 59 Number 1 Article 7
Year 2005 Month 1
Title: Evaluation of Red Raspberry Cultivars for Resistance to Phytophthora Rot Root
Authors: J.A. Pattison and C.A. Weber
Abstract:
Eighteen red raspberry genotypes originating from breeding programs around the world were tested for resistance
to Phytophthora fragariae var. rubi in hydroponic culture under growth chamber conditions.
All plants were
inoculated with two isolates of P. fragariae var. rubi and evaluated for resistance using qualitative and quantitative
measurements of root and shoot symptoms. 'Prelude', 'Anne', 'Caroline', 'Nova', 'Josephine' and NY258 were
identified as having high to moderate levels of disease resistance to the pathogen.
All of the resistant genotypes
tested in this study can be categorized as likely deriving their resistance to P. fragariae var. rubi from either
'Latham' or Rubus strigosus Michx. gcrmplasm.
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