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RESPONSE OF
TRIFOLIUM SUBTERRANEUM TO SODIUM CHLORIDE UNDER DIFFERENT NUTRIENT CONDITIONS
S.Z.
Hyder
Abstract: Salt tolerance and
interaction of NaCl with nutrient ions of the growth medium was studied
in
Trifolium subterraneum
(cv. Wenigup). Growth of this species was reduced at 50 m-equiv/1 NaCl
indicating that it is a salt sensitive species. Such growth reduction
was due to higher sodium and chloride uptake and lower potassium content
of the plant tissues. Adverse effects of NaCl on growth of this species
were more pronounced when the plants were grown in low than in high
nutrient solution. In studying the
interaction of NaCl at four different nutrient concentrations, the
results showed an improvement in growth linearly as the strength of
nutrient concentration increased. It is concluded that NaCl at low
nutrient reduces growth by ion unbalance which is mainly due to low
calcium status of the nutrient medium.
Department of Botany, Sind University, Jamshoro, West Pakistan.
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