Tunicate bulb size variation in monocots explained by temperature and phenology.

摘要: Plant bulbs are modified shoot systems comprised of short internodes with apical bud(s) surrounded by layers leaf bases. Bulb diameters can vary greatly, overall bulb size playing a role in flower formation and resource allocation. Despite the importance to fitness an individual, evolutionary ecological aspects this trait have been almost completely neglected. Examining over 2,500 herbarium vouchers for 115 selected species, we analyzed monocot tunicate within phylogenetic context order investigate its significance. We recorded two diameter optima observed that as increases taxa inhabit warmer areas less temperature seasonality. Furthermore, found hysteranthous taxa, habit where leaves emerge separately from flowers, exhibit larger potentially due reliance upon belowground stored resources rather than on current environmental inputs. This work highlights including portion plants into studies gain more complete understanding evolution plant forms functions.