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Full Length Research Paper
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Phoma negriana,
a new invasive pathogen for Moghan's vineyards in Iran
Mahdi Davari1
and Behzad Hajieghrari2*
1Department
of Plant Protection, Agriculture Faculty, University of
Mohaghegh Ardabili, Ardabil, Iran.
2Department
of Plant Production, Moghan Junior College of Agriculture,
University of Mohaghegh Ardabili, Ardabil, Iran.
*Corresponding author. E-mail:
bhajieghrari@uma.ac.ir. Tel.: +989143186861; Fax:
+984527463417.
Accepted
17 July, 2007 |
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Abstract |
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During disease diagnosing studies in Moghan area, northern
west of Iran, symptoms of black rot and necrosis were
observed for the first time on Vitis venifera.
Incidence was first noticed on leaves and stems. Symptoms
occurred as small brown spots on leaves and stems, and
developed as blackish-brown necrosis/canker so that the
black pycnidia extended at the central parts of them. On the
fruit, symptoms appeared as mummification of berries that
were visible in the infested vineyards until winter time.
The loss due to the disease along with downy mildew was
remarkable during the studied years and can lead to
substantial yield losses in Moghan climate condition. In
order to identify the causal agent, the pathogen was
isolated from infected leaves and stems. Also pathogenesity
test was carried out by inoculating the causal agent to
grapevine cuttings. According to culture, pycnidia and
conidia characteristics described by Boerema et al. (2004),
the results pointed toward Phoma negriana Thum as the
causative organism.
Key
words:
fungi, Phoma negriana, Vitis venifera, Moghan
area, Iran. |
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