Studies of fertility of Dicranum majus in two populations with contrasted sporophyte production

@article{Solli2000StudiesOF,
  title={Studies of fertility of Dicranum majus in two populations with contrasted sporophyte production},
  author={Ida M. Sagmo Solli and Lars S{\"o}derstr{\"o}m and Solveig Bakken and Kjell Ivar Flatberg and B{\aa}rd Pedersen},
  journal={Journal of Bryology},
  year={2000},
  volume={22},
  pages={3 - 8}
}
Abstract Some populations of the dioicous moss Dicranum majus Sm. in southern Norway do not or only rarely produce sporophytes, while most populations in central Norway produce sporophytes frequently. Two populations of D. majus in spruce forest, one from southern Norway (without sporophytes) and one from central Norway (with many sporophytes) were investigated to find differences in sexual reproduction between them. The population in southern Norway had only a few perichaetia and neither dwarf… 
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22 Citations

Genetic Diversity and Population Structure in Bryophyte With Facultative Nannandry
TLDR
The results show that DMs and NMs play different roles in reproduction, inbreeding may occur at cushion level, but gene flow is high enough to prevent substantial genetic drift.
The adaptive background of nannandry: dwarf male distribution and fertilization in the moss Homalothecium lutescens
TLDR
Dwarf males (nannandry) appear to strongly reduce the problem of short fertilization distances in bryophytes, but the presence of water is still critical because the dwarf males are dependent on a certain level of humidity for recruitment and/or development.
Skipped reproductive cycles and extensive sporophyte abortion in the desert moss Tortula inermis correspond to unusual rainfall patterns
A phenological assessment of Tortula inermis (Brid.) Mont. populations in the Mojave Desert, Nevada, U.S.A., over a period of 4 years revealed that the sporophyte cohort initiated in early 1995…
Population structure and genetic diversity in the nannandrous moss Homalothecium lutescens: does the dwarf male system facilitate gene flow?
TLDR
The ability of the dwarf males to establish in high numbers in mature colonies facilitates gene flow between populations as well as increases the potential to accumulate genetic diversity within populations.
Sporophyte and gametophyte generations differ in their thermotolerance response in the moss Microbryum.
TLDR
Either the inherent sporophyte thermotolerance is quite low even in this desert moss, and/or a gametophytic thermal stress response controls sporophytes viability.
Selective spore germination on shoots of Homalothecium lutescens, a moss with dwarf males
TLDR
The inability of I. alopecuroides to develop into dwarf males on shoots of H. lutescens suggests that regulation of spore germination and dwarf male development on host shoots is associated with the degree of relatedness between species.
Reproductive Biology of Three Australian Species of Dicranoloma (Bryopsida, Dicranaceae): Sexual Reproduction and Phenology
TLDR
Maturation of the sporophyte took 18–24 months in these species, whereas sporophytes of D. menziesii matured within 12 months in this species, and archegonia matured within two months in D. billardierei.
Population profile of Bryum apiculatum Schwaegr. in an Atlantic Forest remnant, Pernambuco, Brazil
The dioicous, acrocarpous moss Bryum apiculatum Schwaegr. has a pantropical distribution, but extends to the subtropical and temperate areas of the Northern and Southern Hemispheres (Ochi, 1980). In…
Gene transfer across species boundaries in bryophytes: evidence from major life cycle stages in Homalothecium lutescens and H. sericeum.
TLDR
The results demonstrate that admixed genomes are transferred between the generations, so that the populations behave as true hybrid zones, which has strong evolutionary implications.
Phylogeny and species delimitation within the moss genus Dicranum Hedw.
Dicranum is a large genus essentially found in the Holarctic. More than 90 species are currently accepted and about 30 species are recorded for Europe. Dicranum species grow in a broad range of…
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