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E. Bjarnason, B. Hanger, J. Moran, J. Cooper (1985)
Production of prunus necrotic ringspot virus-free roses by heat treatment and tissue cultureNew Zealand Journal of Agricultural Research, 28
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Transmission of virus through seed and pollen
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The Incidence of Prunus Necrotic Ringspot Virus in Commercial Cut Flower Roses Grown Under Cover in Victoria Carol E. Curtis and Jane R. Moran Plant Research Institute, Department of Agriculture and Rural Affairs, Burnley, Victoria 3121 Prunus necrotic ringspot virus (PNRV) is one of significant difference in infection level between a number of virus diseases that cause rose varieties or between growers even though overall, mosaic (3). The symptoms caused are typical of incidence on properties where the growers rose mosaic and include line patterning (5) propagated their own rootstocks was twice that although symptom expression depends on the on properties where rootstocks were purchased. strain of PNRV, the rose cultivar infected and the Of the 760 samples, representing 13 varieties environmental conditions (2). In some cultivars tested, the overall infection level with PNRV was flowering is delayed; autumnal leaf fall is earlier; 42%. Many of the plants that were infected more deformed flowers are produced, and displayed no symptoms when they were sampled. although symptomless infection is common, The incidence of infection with PNRV among infected plants are generally less vigorous (4). the rootstock samples ranged from 0% to 65% PNRV is only transmitted by grafting in roses
Australasian Plant Pathology – Springer Journals
Published: Jan 25, 2011
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