Effect of temperatures and germination media on seed germination of Jatropha curcas Linn.

Abstract

The effect of different temperatures and different germination media in J. curcas seeds was studied in the present work. The influence of 8 constant temperatures viz. 20°C, 22°C, 25°C, 27°C, 30°C, 32°C, 35°C and 37°C, 4 alternate temperatures viz. 37/27°C, 35/25°C, 32/22°C and 30/20°C and 6 germination media viz. vermiculite, coco-peat, perlite, normal soil, sand and filter paper were used for the observation. The optimum temperature for the germination of J. curcas seeds was recorded “30°C” and suitable germination media was recorded “Vermiculite” for the reason that the highest germination percentage 84.44 recorded at 30°C whereas in Vermiculite has recorded 85. Key worlds: J. curcas, seed germination, different temperatures and different germination media.