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Annals of Botany 73: 455-459, 1994
© 1994 Annals of Botany Company

The Development of Male and Female Regenerants by In Vitro Androgenesis in Dioecious Plant Melandrium album

J. Vagera, D. Paulíková and J. Dolezel

Academy of Sciences of the Czech Republic, Institute of Experimental Botany, Sokolovská 6, CZ-772 00 Olomouc, and Palacky University, Faculty of Natural Sciences, Svobody Str. 26, CZ-772 00 Olomouc, Czech Republic

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.Copyright 1994, 1999 Academic Press

Melandrium album (Miller) Garcke, pollen androgenesis, sex, female, male, supermale, flow-cytometry, nuclear genome size


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