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…
22 Citations
Genetic Diversity and Population Structure in Bryophyte With Facultative Nannandry
- Biology, Environmental ScienceFrontiers in Plant Science
- 2021
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
- Environmental Science
- 2014
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
- Environmental Science
- 2002
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?
- BiologyBMC Evolutionary Biology
- 2015
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.
- BiologyAnnals of botany
- 2006
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
- Biology, MedicineBiology Letters
- 2015
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
- Environmental Science
- 2001
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
- Environmental Science
- 2002
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.
- BiologyAnnals of botany
- 2019
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.
- Biology
- 2014
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…
References
SHOWING 1-10 OF 25 REFERENCES
Reproductive phenology of Dicranum majus in central Norway
- Environmental Science
- 1998
It is not possible to conclude whether the gametophyte is annual or new males are formed through, for instance, perennial protonema, but fertilization frequency in the shoot is low, indicating that gametophores are annual.
EXPERIMENTAL TAXONOMY OF SOME BRITISH SPECIES OF THE GENUS DICRANUM
- Biology
- 1965
An experimental taxonomic study of a group of closely related species of the moss genus Dicranum found that certain genotypes exhibit wide phenotypic plasticity, but distinct genotypes of D. fuscescens and D. scoparium cannot be distinguished (except by cultivation experiments) from genotypes which are phenotypically plastic.
Dynamics of understory vegetation in an old-growth boreal coniferous forest, 1988 -1993
- Environmental Science
- 1996
. Understorey vegetation changes in a South Norwegian old-growth coniferous forest were studied between 1988 and 1993 in 200 1-m2 vegetation plots. Our aims were to quantify the amount of…
The polysetous inflorescence of Dicranum majus L.
- Biology
- 1948
Abstract1. Statistical tests show that plants with one or two setae are equally common. Plants with three and four setae are definitely rarer. No plants with five setae were recorded but it may be…
The regional vegetation of Norway; that of Central Norway in particular
- Environmental Science, Geology
- 1987
The vegetation of Norway varies along three main gradients: from south to north, from the lowlands to the mountains, and inland from the coast. The underlying criteria used in preparing the enclosed…
Changes in the occurrence and abundance of plant species in a Norwegian boreal coniferous forest, 1988–1993
- Environmental Science
- 1995
True five-year trends were found in the spruce forest: (1) Deschampsia flexuosa (increase), (2) several vascular plant species with preference for richer sites, notably Oxalis acetosella (decrease), and (3) most bryophyte species ( increase).
The relation between the occurrence of polysety and the number of archegonia in female inflorescences of Dicranum majus and D. scoparium.
- Biology
- 1980
Inflorescences of Dicranum scoparium contain 7–9 archegonia on average compared with 13–15 in D. majus, indicating that the supply of antherozoids was not saturating for fertilization and polysety was observed in only 5% of fertile shoots.