Abstract
The sexually dimorphic liverwort, Sphaerocarpos texanus, can be used to study changes in sex ratios in a cohort of individuals during different life stages, from spore development to germination to senescence. Recent attempts to germinate spores under controlled conditions have been successful. This study used laboratory-derived spores to detect subtle sex-specific differences in germination in a cohort of spores across different dormancy breaking temperatures. Sex ratios were determined for subsets of sporelings hem at 35/20, 30/15, and 25/15°C for one to eight wk. Sex ratios were female biased for spores that lost dormancy in the 25/15°C and when the data were pooled across the three dormancy breaking thermoperiods. This pattern coupled with the potential for spore banks formation in S. texanus can lead to a single cohort of spores influencing the sporeling sex ratios across seasons.
| Original language | English |
|---|---|
| Pages (from-to) | 69-71 |
| Number of pages | 3 |
| Journal | Bryologist |
| Volume | 104 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2001 |
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Plant Science