Botrytis cinerea in raspberry in Serbia II: Growth rate and virulence of isolates
Botrytis cinerea na malini II: Brzina rasta i virulentnost izolata
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Author
Tanovic, Brankica
Hrustic, Jovana
Mihajlovic, Milica
Grahovac, Mila
Delibasic, Goran
Keywords
Botrytis cinereaRaspberries
Serbia
malina
Srbija
Metadata
Show full item recordAbstract
Growth rate and virulence of 130 isolates of Botrytis cinerea, derived from raspberry fruit
originating from six commercial fields in a raspberry growing region of Serbia and classified
in two morphological and four genetic groups were studied. The results showed significant
differences in mycelial growth rate among the isolates. The highest and lowest recorded
growth rates were 24.5 mm/day and 8.4 mm/day, respectively, while the growth rate of most
isolates ranged from 15.8 to 21.8 mm/day. The growth rate of isolates that belong to different
morphological and genetic subgroups varied similarly. Furthermore, growth rate intervals
of all subgroups overlapped, suggesting that the groups cannot be distinguished based
on growth rates of the isolates contained. The studied B. cinerea isolates exibited different
levels of virulence towards vine, sunflower and raspberry leaves, while an analysis of variance
revealed that both the isolates and the inoculated host species were significant sources of
variation (P<0.01). Sunflower and raspberry leaves were significantly more sensitive than vine
leaves. However, correlation between isolate virulence and different hosts was not found. U radu su predstavljeni rezultati proučavanja brzine rasta i virulentnosti 130 izolata
Botrytis cinerea, dobijenih iz obolelih plodova maline poreklom sa šest lokaliteta iz područja
komercijalnog gajenja maline u Srbiji i razvrstanih u dve morfološke i četiri genetičke grupe.
Rezultati su pokazali da je razlika između izolata u brzini rasta statistički značajna. Najveći
zabeleženi porast bio je 24,5 mm/dan, dok je najmanji porast iznosio 8,4 mm/dan. Utvrđena
su slična variranja u porastu izolata koji pripadaju različitim morfološkim ili genetičkim
grupama. Drugim rečima, rasponi brzine rasta izolata iz različitih morfoloških i genetičkih
grupa međusobno se preklapaju, što ukazuje da ovaj parametar nije pogodan za razvrstavanje
izolata u grupe. Proučavani izolati su ispoljili različit nivo virulentnosti za listove vinove loze,
suncokreta i maline, dok je analiza varijanse pokazala da su i izolati i domaćini statistički
značajan izvor variranja (P<0,01). Listovi suncokreta i maline bili su značajno osetljiviji od listova
vinove loze. Međutim, korelacija u virulentnosti izolata za različite domaćine nije ustanovljena.