ISHS Acta Horticulturae 637: XXVI International Horticultural Congress: Advances in Vegetable Breeding
UNEXPECTED SUSCEPTIBILITY OF NOVEL BREEDING LINES OF EUROPEAN RHUBARB (RHEUM RHAPONTICUM) TO LEAF AND PETIOLE SPOT DISEASE |
| Authors: | Y. Zhao, B.W.W. Grout, P.C. Crisp |
| Keywords: | Fungus susceptibility, micropropagation, Ramularia rhei, Ascochyta rhei |
| Abstract:
An experimental cultivar of rhubarb (Rheum rhaponticum) developed significant susceptibility to infection by both Ramularia rhei and Ascochyta rhei following commercial micropropagation. The original, vegetatively propagated material showed no such susceptibility. Both pathogens caused leaf and petiole spot disease at economically damaging levels. Changes in growth habit and vigour of this clone have previously been reported following micropropagation and possible physiological, genetic and epigenetic explanations are considered. | |
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