Abstract
The effect of constant temperatures (20, 25, 30, 35 and 40 degrees C) on the rate of seed germination was studied. Seed germination percentage was high at 20, 25, 30 and 35 degrees C and was significantly reduced at 40 degrees C. The rate of germination appeared to be best at 30 and 35 degrees C.
NaCl at 0.001 and 0.01 M had no effect on germination at the temperatures studied (25, 30 and 35 degrees C). Seed germination tolerance to a higher salt concentration was temperature-dependent. 0.1 M had no effect at 25 and 30 degrees C but inhibited germination significantly at 35 degrees C. 0.2 M inhibited germination significantly at 30 and 35 degrees C. 0.3 M inhibited germination significantly at all temperatures studied.