Author(s): Ali A. Al-Helal and I. Al-Hubashi
Article publication date: 1995-12-01
Vol. 13 No. 3 (yearly), pp. 583-590.
136
Keywords
temperatures, seed, germination
Abstract
The effect of constant temperatures (20, 25, 30, 35 and 40°C) on the rate of seed germination was studied. Seed germination percentage was high at 20, 25, 30 and 35°C and was significantly reduced at 40°C. The rate of germination appeared to be best at 30 and 35°C.
NaCl at 0.001 and 0.01 M had no effect on germination at the temperatures studied (25, 30 and 35°C). Seed germination tolerance to a higher salt concentration was temperature-dependent. 0.1 M had no effect at 25 and 30°C but inhibited germination significantly at 35°C. 0.2 M inhibited germination significantly at 30 and 35°C. 0.3 M inhibited germination significantly at all temperatures studied.