Volume 2, Issue 1 (2000)
JAST 2000, 2(1): 27-32 |
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Fassihiani A. Symptomless Carriers of the Causal Agent of
Tomato Wilt Pathogen. JAST 2000; 2 (1) :27-32
URL: http://jast.modares.ac.ir/article-23-1450-en.html
URL: http://jast.modares.ac.ir/article-23-1450-en.html
Plant Pests and Disease Research Department, Fars Agricultural Research Centre, P.O. Box 73415-121,
Zargan, Islamic Republic of Iran.
Abstract: (5613 Views)
A study was carried out to determine whether naturally-occurring weeds and other
cultivated plants in tomato growing regions could act as symptomless reservoirs of
infection to Fusarium oxysporum f. sp. lycopersici. A numher of F. oxysporum isolates
from weeds and oubergines were used in this investigation. A susceptible tomato
cultivar was used for comparison. The plants were artificially inoculated at the five to
six leaf stage by root dip method. Only tomato showed wilt symptoms and died three
weeks after inoculation. These isolates were identified as F. o. f. sp. lycopersici. Weeds
including Amaranthus retroflexus, Amaranthus. sp., Chenopodium album, and aubergines
were colonized to various degrees and determined as symptomless carriers. Therefore,
in infested areas, aubergines should not be rotated consecutively with tomatoes and
proper measures should be adopted to control the weeds.
Received: 2010/03/15 | Accepted: 2010/03/15 | Published: 2010/03/15
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