ASSESSMENT OF THE ACTION OF DEPOSIT MYCOFLORA ON PHASEOLUS VULGARIS L . BEANS FROM SUCEAVA GENEBANK’S COLLECTION

Diana BATÎR RUSU, Danela MURARIU

Abstract

This study consisted in a phytopathological evaluation of epiphyte and endophyte mycological which appeared on Phaseolus vulgaris seeds, placed on two types of substrates (CGA medium and blotting paper) and emphasing corellations between the evolution of isolated micromycets on Phaseolus vulgaris samples and different periods of storage. The 30 populations of bean resulted from the active collection of Suceava Genebank, were conserved for different time intervals (6 and 15 years), in controlled atmosphere storages (T=+40C; relative air humidity = 30 - 40%). Micromycets were evaluated by counting the infected seeds, seeds and the attack frequency was expressed as a percentage, by visual estimation of seeds surface. The target objectives of the study were:  to establish the influence of the conservation period on the activity of micromycets placed on stored seeds; to settle the influence of the substrate type - CGA medium (potato - dextrose - agar) and blotting paper - on the development of fungal pathogens; to establish a complementar  action of identified micromycets on Phaseolus  vulgaris seeds  in two storage periods,  by  determining the correlation coefficients between the action of fungal pathogens identified on the samples taken in study.

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