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EPIFITNA MIKROFLORA SEMENA PINUS NIGRA ARN. I NJEN ODNOS PREMA FUSARIUM OXYSPORUM VAR. ORTHOCERAS FORMA PINI.
EPIPBYTAL MICROFLORA OF THE SEED OF PINUS NEGRA ARN. AND ITS RELATION TOWARDS FUSARIUM OXYSPORUM VAR. ORTBOCERAS F. PINI
Veselinović, Nada
Peno, Milka
Studies were made on population of epiphytal microflora of the seed of Pinus nigra Arn. and its importance for keeping up the quality and sound condition of the seed. The studies were performed during the period of two years. They included qualitative and quantitative examination of composition of the microflora, the relation between the dominant microflora and Fusarium oxysporum var. orthoceras f. pini, as well as interrelation of the dominant microflora. The acquired results showed that: - with proper handing and storing of seed (lower temperature and humidity) population of microflora on the seed of Pinus nigra Arn. was lown and fungoid microorganisms were present more than bacterioid microorganisms; - as epithytal microflora the most common were the fungi from the phylum of Penicillium, then Aspergillus, Alternaria and Pulluaria, which, under bad conditions of storing (higher temperature and humidity), might cause mildew and decay of seed; - most of the dominant microflora of the examined seed of Pinus nigro. A r n. affected Fusarium oxysporum v a r. orthoceras f. pini. Fungi from the phylum of Penicillium were at the first place, then Aspergillus, and fungi from the phylum of Trichoderma were at the third place; - the results showed that the importance of the microorganisms affecting Pinus nigra Arn. was great because, at an extensive population of these, Fusaricm species were not present in the epiphytal microflora; - interrelation of the dominant microflora of the spermatoplan of the examined seed was neutral, what preconditioned a high population of antagonistic microorganisms.
srpski
1976
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