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8 Agriculture 7(2001)
Grafikon 1. Patogenost Fusarium spp. za klijance p{enice
Graph 1. Pathogenicity of Fusarium spp. on wheat seedlings
Najve}u patogenost za klijance p{enice ima F. graminearum,
a za njim slijede F. culmorum i F. sporotrichioides.
To potkrepljuju rezultati Scardaci i Webster (1982.),
Manka i Chelkowski (1985.), Specht (1988.), Manka
(1989.) i Balmas i sur. (1995.). Izolati ostalih Fusarium
vrsta bili su slabo ili vrlo slabo patogeni za klijance obje
isptivane sorte p{enice.
Prosje~an postotak isklijalih zrna zara`enih s F. graminearum
iznosio je 48,10 kod sorte Slavonija, odnosno
59,39 kod sorte Demetra. Od isklijalih zrna kod razmjerno
velikog broja utvr|ena je nekroza klicinog korjen~i}a
(59,12% Slavonija, 49,60% Demetra). [to je vrsta manje
patogena, postotak isklijalih zrna je ve}i, a manji broj klijanaca
ima simptome nekroze klicinog korjen~i}a. Kod zrna
inficiranih s F. poae, postotak isklijalih zrna iznosio je
79,33% (Slavonija) i 87,67% (Demetra), a broj klijanaca s
nekrozom klicinog korijena bio je malen (3,78% kod sorte
Slavonija, 1,52% kod sorte Demetra).
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