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Abstract:
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Investigations on the water relations and gas exchange of/tcacia aun'culiji_2rmis
were carried out in natural and controlled environments. The experiments were
performed in both seedlings and five year old trees. Different sets of experiments
were conducted in Acacia plantations, at Kothachira, Palakkad District and in
.seedlings, at KFRI campus nursery mainly during the summer months. Investigations
were also extended to seedlings of A.mangium, Aaulacocarpa and /Lholocericea,
which are also phyllodinous species with the intention of comparing their physiology
with Acacia auriculifomus.
Potted seedlings of four species of Acacia viz., A. auriculi/E)/7r:i.r, /I.
aulacocarpa, A. holocericea and A. mangium were used for the study.
Measurements of relative water content (RWC), water potential, photosynthetic rate,
transpiration, stomatal conductance, water use efficiency etc. of phyllodes were
measured diumally in plants subjected to three stress conditions namely, drought,
salinity and flooding |