Assessment of the efficacy of some physico-chemical and hormonal treatments for dormancy removal & germination improvement in Bunium persicum (Kala Zeera)
International Journal of Chemical Studies
The aim of this study was to determine the efficacy of some physico-chemical and hormonal treatments for dormancy removal / germination improvement. In laboratory experiment, seeds were subjected to various hormonal treatments like Gibberellic acid (0.01mM & 0.1mM), Indole Acetic acid (.01mM & 0.1mM) & Kinetin (0.01mM & 0.1 mM) for 24h. Seeds were also subjected to 24h, 48h running water for leaching and seed were kept for moist chilling at 4 0 C for 2 months. Seeds were also treated with
... es (48h L +Kn (0.01 & 0.1mM); 48h L+GA3 (0.1mM) for 24h after 48h leaching. Seed germination was promoted by GA3 (0.1mM), IAA (0.01mM) and Kinetin (0.01mM). Kinetin (0.01 mM) was found to be most effective caused 77.33% germination within 150 days at 4 0 C as compared to 60% in control. Leaching (24h & 48h) alone was not found to be effective, rather it was inhibitory for seed germination. Hormonal treatments (Kinetin 0.01 & 0.1 mM) when applied to seeds after 48h leaching enhanced seed germination. Lower concentration was found to be more effective, around 72% & 68% germination was observed at 48hL + Kn 0.01mM and 48h L + Kn 0.1mM, respectively as compared to 60% in control. Based on dormancy breaking requirements, it was confirmed that seeds failed to germinate under favourable conditions throughout the study period (8 months). However seeds germinate only at low temperature (4 0 C). Pretreated seeds shifted from 4 0 C to 25 0 C got deteriorated within 10 days. The data indicate that seeds of Bunium persicum exhibit morpho physiological dormancy.