Evaluation of germination and growth of cotton by pre-sowing treatments under salt-stressed conditions
2002
Javid, A. | Yasin, M. | Nabi, G. (National Agricultural Research Centre, Islamabad (Pakistan). Land Resources Inst.) | Rauf, A.
A study was undertaken to see the effect of pre-sowing soaking of cotton seed in various solutions of known concentrations for various duration on seed germination and salt tolerance. Effect of seed treatments on cotton germination, seed ling length and weight at salinity levels (1.5, 5, 10, 15, 22 and 30 dS/m was studied. Significantly higher germination, seedling length and weight was found at S1.5 and S5 salinity levels. Reduction in seed germination, seedling length and seedling weight of cotton was significant with linear increase in salinity. Minimum seedling length and weight was found at 30 dS/m. Decline in germination and seedling length at various salinity levels was not alike in all treatments. Like salinity, pre-sowing soaking had a significant positive effect on germination, seedling length and weight. Soaking of seeds in 15 ml concentrated sulphuric acid for 10 minutes and then dipping in 15 me/1 calcium sulphate for 2 hours was best treatments. Seed soaked in 20 ml concentrated sulphuric acid for 10 minutes and seed soaked in 15 me/l calcium sulphate for 2 hours also improved germination soaking treatments helped in overcoming hazardous effect of salinity. Values regarding germination, seedling length and weight were minimum in control (dry sowing).
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