Effect of phosphours application on growth chlorophlly and proline under water deficit in clusterbean (Cyamopsis tetragonoloba L. Taub)
2003
Shubhra, | Dayal, J. | Goswami, C.L., CCS Haryana Agricultural University, Hisar (India). Department of Botany and Plant Physiology
A study was carried out on clusterbean (Cyamopsis tetragonoloba L. Taub) cv. HG-365 under pot culture. Three levels of phosphorus i.e., 15, 30 and 60 mg/ kg soil were supplied in two split doses at week's interval in the form KH2PO4 one week after sowing. Water stress was created by withholding irrigation at vegetative, flowering and pod-filling stages. Water deficit decreased the dry weights of leaf, stem and roots in general. The chlorophyll content of the leaf was also decreased by water-deficit but there was accumulation of large amount of proline in the leaf. Treatment with phosphorus proved effective in improving the chlorophyll content as also dry weights of plant parts at all the stages. On the contrary, proline content of the leaf decreased by phosphorus treatment. The present investigation revealed that phosphorus treatment was effective to large extent in alleviating the effect of water deficit in clusterbean.
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