Regional and varietal differences in the risk of wheat seed infection by fungal species associated with fusarium head blight in Italy |
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| Authors: | Email author" target="_blank">D?A?ShahEmail author N?Pucci A?Infantino |
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| Institution: | (1) Department of Plant Pathology, NYSAES, 630 W. North St., Geneva, NY, 14456;(2) Istituto Sperimentale per la Patologia Vegetale (ISPaVe), Via C.G. Bertero, 22 00156 Roma, Italy |
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| Abstract: | The incidence of seed infection by fungal species pertinent to the fusarium head blight complex was monitored from 1999 to 2002 in two soft and three durum wheat cultivars grown across the northern, central and southern production zones of Italy, in order to characterize the species composition at the seed level. The main species recovered were Fusarium graminearum, F. poae and Microdochium nivale. There was a marked influence of production zone on seed infection incidence for both durum and soft wheat cultivars, with incidence of infection generally decreasing from the northern to the southern zone. Incidence of seed infection by different species of Fusarium was twice to four times higher in durum compared with the soft wheat cultivars in the study. There were no significant differences in terms of seed infection incidence between the two soft wheat cultivars, but the durum cultivars differed in their levels of seed infection for some of the pathogens. The results demonstrated that the durum cultivars were more at risk of seed infection by pathogens associated with fusarium head blight, and that wheat grown in northern Italy is at higher risk of seed infection by these species. |
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| Keywords: | Fusariumspp generalized linear mixed model regional differences seed pathology Triticum aestivum Triticum durum |
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