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Biological control of
Rhizoctonia solani on potato by Verticillium biguttatum
Erkol Demirci1*,
Cafer Eken1 and Elif Dane2
1Department
of Plant Protection, Faculty of Agriculture, Atatürk
University TR-25240, Erzurum, Turkey.
2Provincial
Directorate of Agriculture, Section of Plant Protection,
Manisa, Turkey.
Corresponding
author. E-mail:
drerkol@hotmail.com.
Accepted
10 April, 2009 |
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Ten
isolates of Verticillium biguttatum were obtained
from sclerotia of Rhizoctonia solani on potato tubers
in Erzurum, Turkey. The interaction between V. biguttatum
and R. solani was studied in vitro and in
vivo. V. biguttatum isolates affected R.
solani by antibiosis and parasitism. All isolates of
V. biguttatum inhibited the growth of R. solani
colony. After the coiling around of R. solani hyphae,
V. biguttatum hyphae penetrated host cell walls and
grew within the hyphae. Viability of hyphae and sclerotia of
R. solani was reduced by V. biguttatum
isolates. V. biguttatum also significantly reduced
the disease severity of R. solani on potato sprouts
in pot experiments. This is the first report of V.
biguttatum from sclerotia of R. solani in Turkey.
Key
words:
Bio-control, potato, Rhizoctonia solani,
Verticillium biguttatum. |
