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2003 | 02 | 1 |
Tytuł artykułu

The effect of phyllosphere microorganisms on the healthiness of aboveground parts of soybean [Glycine max [L.] Merrill]

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Języki publikacji
The studies were conducted in the years 1998–2000 on soybean, cv. Polan. The purpose of the studies was to conduct microbiological and mycological analyses of the leaves and pods of soybean. Bacteria and fungi were obtained much more often from the diseased soybean parts as compared to the healthy ones. 778 fungi isolates were obtained as a result of the mycological analysis of the leaves and pods of soybean. Fusarium spp. and Phomopsis sojae were most frequently isolated within pathogenic fungi. Their proportion was 17.5% and 7.8% of all the fungi, respectively. On the other hand, the isolated saprophytic fungi included for example the species from the genera of Acremonium, Cladosporium, Gliocladium, Penicillium and Trichoderma as well as Aureobasidium pullulans and Epicoccum purpurascens. Besides, about a four times lower number of antagonistic microorganisms (Bacillus spp., Pseudomonas spp., Gliocladium spp., Penicillium spp., Trichoderma spp.) was isolated from the infected soybean parts in comparison to the number of microorganisms isolated from the healthy parts.
Badania przeprowadzono w latach 1998–2000 na roślinach soi odmiany ‘Polan’. Przedmiotem badań były liście i strąki soi, które poddano analizie mikrobiologicznej i mikologicznej. Z chorych organów soi znacznie częściej, aniżeli ze zdrowych, uzyskiwano bakterie i grzyby. W wyniku analizy mikologicznej liści i strąków soi uzyskano 778 izolatów grzybów. W obrębie grzybów chorobotwórczych najczęściej wyosobnianymi okazały się Fusarium spp. i Phomopsis sojae, bowiem ich udział stanowił odpowiednio 17,5% i 7,8% wszystkich grzybów. Natomiast spośród grzybów saprotroficznych izolowano gatunki z rodzajów Acremonium, Cladosporium, Gliocladium, Penicillium i Trichoderma oraz Aureobasidium pullulans i Epicoccum purpurascens. Ponadto z porażonych organów soi izolowano około czterokrotnie mniej mikroorganizmów antagonistycznych (Bacillus spp., Pseudomonas spp., Gliocladium spp., Penicillium spp., Trichoderma spp.), aniżeli ze zdrowych.
Opis fizyczny
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