Pesticidi i Fitomedicina (Jan 2012)
Distribution Frequency and Incidence of Seed-borne Pathogens of Some Cereals and Industrial Crops in Serbia
Abstract
A total of 41 species of fungi were isolated from seed samples of barley, maize, soybean,and sunflower collected at different locations in Serbia. The majority of detected speciesoccurred on barley (35 of 41 species or 87.8%) comparing to soybean (17 of 41 species or41.5%), sunflower (16 of 41 species or 39.0%) and maize (15 of 41 species or 36.9%). Speciesbelonging to genera Alternaria, Chaetomium, Epicoccum, Fusarium, Penicillium and Rhizopuswere present on seeds of all four plant species. Alternaria species were dominant on soybean,barley and sunflower seeds (85.7%, 84.7% and 76.9%). F. verticillioides and Penicilliumspp. were mainly isolated from maize seeds (100 and 92.3% respectively), while other specieswere isolated up to 38.5% (Chaetomium spp. and Rhizopus spp.). F. graminearum, F. proliferatum,F. poae and F. sporotrichioides were the most common Fusarium species isolatedfrom barley (51.1-93.3%), while on the soybean seeds F. oxysporum (71.4%), F. semitectum(57.1%) and F. sporotrichioides (57.1%) were prevalent. Frequency of Fusarium species onsunflower seeds varied from 7% (F. equiseti, F. graminearum, F. proliferatum and F. subglutinans)to 15.4% (F. verticillioides). Statistically significant negative correlation (r = –0.678*) wasdetermined for the incidence of F. graminearum and Alternaria spp., as well as, Fusarium spp.and Alternaria spp. (r = –0.614*), on barley seeds. The obtained results revealed that seedbornepathogens were present in most seed samples of important cereals and industrialcrops grown under different agroecological conditions in Serbia. Some of the identifiedfungi are potential producers of mycotoxins, thus their presence is important in termsof reduced food safety for humans and animals. Therefore, an early and accurate diagnosisand pathogen surveillance will provide time for the development and the applicationof disease strategies.
