Abstract
Acacia ampliceps Maslin and Eucalyptus camaldulensis Dehnh. were grown for one year in lysimeters at three soil moisture regimes: 100 % (well-watered), 75 % (medium-watered) and 50 % (low-watered) of total plant available water. Biomass yield of both species increased with increase in soil moisture. Water-use efficiency (WUE) of E. camaldulensis decreased and that of A. ampliceps increased markedly with decrease in available soil moisture. A. ampliceps showed 4 − 5 times more biomass yield than E. camaldulensis grown at similar soil moisture. A. ampliceps showed almost 5, 9 and 12 times higher WUE than E. camaldulensis under low-, medium- and well-watered treatments, respectively. Significant negative correlation of δ13C with WUE (r = −0.99) was observed in A. ampliceps. In contrast, δ13C of E. camaldulensis showed a significant positive correlation with WUE (r = 0.82).
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Akhter, J., Mahmood, K., Tasneem, M.A. et al. Water-use efficiency and carbon isotope discrimination of Acacia ampliceps and Eucalyptus camaldulensis at different soil moisture regimes under semi-arid conditions. Biol Plant 49, 269–272 (2005). https://doi.org/10.1007/s10535-005-0272-6
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DOI: https://doi.org/10.1007/s10535-005-0272-6