ISHS Acta Horticulturae 751: IV International Symposium on Rose Research and Cultivation
ROOTING SUCCESS OF ROSE CUTTINGS REDUCED BY INFECTION WITH APPLE MOSAIC VIRUS AND PRUNUS NECROTIC RINGSPOT VIRUS |
| Authors: | D.A. Golino, S.T. Sim, N. Salem, A. Rowhani |
| Keywords: | rootstock, virus effects, 'Dr. Huey', rose mosaic |
| Abstract:
The ability of rose cuttings from virus-infected stock to root was studied in Rosa hybrida ‘Dr. Huey’, a commonly used rootstock variety. Stock was infected with Apple mosaic virus (ApMV), Prunus necrotic ringspot virus (PNRSV) and a mixed infection of both ApMV and PNRSV; stock which has indexed negative for virus was used as the control. Virus infection reduced total percent rooting by an average of 35% as compared to healthy. Root vigor was also negatively affected by virus infection. The diameters of the cuttings from one virus treatment consisting of a mixed infection of ApMV + PNRSV were significantly smaller than healthy, but not in the other two virus treatments. It is possible that in some cases, rooting reduction is an indirect effect, due mainly to a decrease in stem diameter, stored carbohydrates and vigor. | |
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