sdu faculty of forestry journal special edition 2009 - Orman Fakültesi

SDÜ ORMAN FAKÜLTESİ DERGİSİ
Figure 1. Dead shoot rates of five tree species inoculated with five D. pinea isolates.
On C. libani all isolates caused remarkable lesion, while on the other host
species only 1-3 of the isolates caused lesion. The length of lesion ranged from
12.4 to 21.4 mm on C. libani and from 9.0 to 18.6 mm on P. nigra, while on the
other hosts the length did not exceed 6.0 mm (Figure 2).
There was a significant correlation ( r= 0.53, p< 0.01) between length of
lesion and linear fungal extension on all host-isolate combinations. Average
length of the lesion was greater than average fungal extension in all host species
including all isolates of the fungus ( Table 2, Figure 3). The average fungal
extension was found 27.6 mm on P. nigra, 24.0mm on P. brutia, 18.4mm on C.
libani, 16.4 mm on P. sylvestris and 8.4 mm on A. nordmanniana
bornmülleriana. Similar to length of lesion , average fungal extension was the
lowest on J. excelsa (1.6 mm). Control seedlings did not show any symptoms of
disease.
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