Articles
DETECTION OF TOSPOVIRUSES IN BULBOUS CROPS AND THEIR TRANSMISSIBILITY BY VEGETATIVE PROPAGATION
Article number
430_112
Pages
709 – 710
Language
Abstract
Visual selection of tomato spotted wilt virus (TSWV) in dahlias is only possible to a limited extend.
The localized infection of various plant parts during the growing and storage period caused problems in the development of a reliable test procedure.
Best results were obtained by testing the tubers after at least 2 months storage at 9°C. Shoots cut from TSWV-infected tubers appeared to be infected between 40–90%.
The localized infection of various plant parts during the growing and storage period caused problems in the development of a reliable test procedure.
Best results were obtained by testing the tubers after at least 2 months storage at 9°C. Shoots cut from TSWV-infected tubers appeared to be infected between 40–90%.
Symptoms of TSWV and impatiens necrotic spot virus (INSV) are mutually indiscernible in both gladiolus and iris.
Moreover, symptoms of TSWV or INSV in gladiolus can be confused with those caused by mycoplasma.
In iris a third tospovirus was detected, which is called iris yellow spot virus.
Bulbs or corms harvested from infected plants produced healthy plants in the next growing season.
In Hippeastrum, Amaryllis and Nerine TSWV was detected in leaves with typical symptoms and also in the tunics connected with these leaves, but not or incidentally in other parts of the bulbs.
This might explain the curing of the main bulbs after some years and the limited transmission of TSWV to the offspring.
Full paper appears in Acta Hort. 432:132–139.
Publication
Authors
A.F.L.M. Derks, M.E.C. Lemmers
Keywords
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