6Baskin, C. C. , and Baskin, J. M.. Seeds, ecology, biogeography, and evolution of dormancy and germination. (San Diego:Aca- demic Press), 1998:239 - 330.
7Bhattcharya, A and Saha, P. K.. Uhrastructure of seed coat and water uptake pattern of seeds during germination in Cassia sp [J]. Seed Sci. Technol. 1990,18:97 - 103.
