We examined induced androgenesis in vitro in the dioecious plant Melandrium album and aimed to produce complete plants from cultured immature microspores. Flow cytometric analysis of nuclear DNA content was used to screen ploidy levels in regenerated plants and to estimate the nuclear genome size in plants differing in sex. Haploid and spontaneous dihaploid (polyhaploid) females dominated among androgenic regenerants. Androgenic males occurred sporadically. They were exclusively dihaploid and genetically supermales (AAYY). The progenies obtained as a result of the crosses between supermales and standard females contained only males. This is the first report on complete androgenesis in M. album from the microspores carrying the Y chromosome.
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J. Vagera (1994) studied this question.
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