Folia Horticulturae

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The relationship between mycoflora of radish seeds and their vigour

K. Tylkowska, R. Hołubowicz

Department of Seed Science and Technology
Faculty of Horticulture, Poznań Agricultural University
Baranowo, 62-081 PrzeĽmierowo, Poland

Two samples of commercial seeds of radish (Raphanus sativus L.), of the cultivar Saxa were investigated. They both met Polish seed quality standards for first class seeds. Mycological analysis was performed and then half of the seeds were subjected to accelerated ageing (AA). After performance of the AA test, the mycological test was repeated. At the same time seed vigour tests were conducted in which the following seed characters was measured: mean germination time, speed of germination, total number of germinating seeds, germination capacity (first and final counting), total length of germs, and length of their hypocotyls and roots. It was found that the two samples differed significantly in respect of their infestation with fungi, seed germination capacity, and germ length. AA significantly delayed and prolonged seed germination whereas it did not affect the total number of germinating seeds. The sample more highly infested with fungi had lower values of germination capacity in both the first and final counting and shorter germs. It was demonstrated that the incidence of fungi and their location may be a valuable indicator of radish seed vigour. Besides the total number of fungi, in the tested samples mainly Alternaria spp. were found to be such an indicator.

Tylkowska K., Hołubowicz R., 1991. The relationship between mycoflora of radish seeds and their vigour. Folia Horticulturae III/3: 49-63.