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Populational and Genetic Studies of a Homosporous Fern-Osmunda regalis

Edward J. Klekowski, Jr.
American Journal of Botany
Vol. 57, No. 9 (Oct., 1970), pp. 1122-1138
Stable URL: http://www.jstor.org/stable/2441278
Page Count: 17
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Populational and Genetic Studies of a Homosporous Fern-Osmunda regalis
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Abstract

The mating system and the genetic system of the homosporous fern Osmunda regalis were investigated. Seven populations from western Massachusetts were sampled. All the sporophytes investigated were found to be heterozygous for zygotic lethals. Morphological studies of the gametophytes indicated an intergametophytic mating system when the gametophytes were spatially and chronologically situated to exchange male gametes. Genetic studies evidenced a genetic system based upon duplicate loci.

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