Vol. 3, Issue 2 (2018)
Seed germination study on some threatened plants of Rajasthan desert
Author(s): Vinod Kumari, RK Gehlot
Abstract: Seed germination is one of the most critical events subjected to environmental control in plant life. Fresh and one year old seeds of Monsonia heliotropioides, Psoralea odorata and Seetzenia lanata showed dormancy and 100% viability. In the present study, effect of mechanical scarification and various chemical treatments viz. Sulphuric acid (H2SO4), Ammonium nitrate (NH4NO3), Potassium nitrate (KNO3), Gibberellic acid (GA) on seed germination were studied. Under control, fresh and one year old seeds of Psoralea odorata showed only 15% and 30% germination whereas Monsonia heliotropioides and Seetzenia lanata showed no germination. Mechanical scarification and chemical treatment enhanced germination percentage in Psoralea odorata. Seeds of Seetzenia lanata secreted mucilage and various treatments had no effect. A very poor germination was showed by Monsonia heliotropioides only under mechanical scarification.