Seed germination studies on solanum melongena L. under salt stress.

The present work has been conducted on the effect of different concentrations of sodium chloride ranging from 25mg – 100mg of NaCl. The maximum germination percentage has observed at 25mg. beyond this level, the percentage of germination has reduced gradually, in the same way similarly time diffraction has also reduced gradually and 4h duration has shown maximum germination. The shoot and root lengths, fresh and dry weights also increased up to 25mg / in 4h when it is in NaCl and thereafter its gradually reduced.

Differential effect of cadmium and mercury on growth and metabolism of Solanum melongena L. seedlings.

The present investigation reports the results of the effect of cadmium and mercury individually on seed germination, seedling growth, number of lateral roots, fresh and dry weights and seedling metabolism in Solanum melongena. Effect of different concentrations of these two heavy metals (Cadmium--50, 100, 300, 500, 700, 1000, 3000, 5000, 7000 and 9000 ppm and Mercury--5, 10, 15, 20, 25, 30, 35, 40, 45 and 50 ppm) and durations for 6, 12 and 24 h were employed for all seedling parameters of brinjal. Both Cd and Hg showed drastic effects at high concentrations and longer duration with regard to seedling growth and metabolism.