| dc.description.abstract | Calobota sericea is a native legume of South Africa, confined to the water-limited rangelands, and it has recently
been prioritised for additional characterisation regarding its pasture potential. In this study, we examined the
growth characteristics of C. sericea under glasshouse conditions where water limitation was implemented at
different plant ages, and for different durations. Results indicate that preferential resource allocation to the roots,
as well as reduced stomatal conductance and transpiration, were early responses to water limitation, irrespective of
the age at which water limitation was imposed, or the duration of water limitation. Under water-limited conditions,
increased production of protective pigments, such as carotenoids and anthocyanins, was also observed, which
helped in recovery after rewatering. It was concluded that after rewatering, all negative impacts of water limitation
on morphology and physiology of C. sericea plants were generally returned to well-watered levels. This suggests
that C. sericea plants employ a wide range of phenotypic adjustments in response to water limitation, which makes
the plants well adapted to areas with high rainfall variability. | en_US |
