Study on method of breaking dormancy and improving vitality in seeds of Oxytropis falcata / 中草药

ABSTRACT

Objective: To break the dormancy of Oxytropis falcata seeds and improve the seed vigor. Methods: The physical and chemical methods were used to break the hard seeds, and the exogenous chemicals were used to improve the seed vigor. Results: The 1000-seed weight was 1.239 g, and the seed hardiness rate was as high as 90.67%. After 8 min of treatment with concentrated sulfuric acid, the seeds were activated by CTK + KNO3 combination. The germination rate was up to 82.7%, the germination potential was up to 68.0%, and the germination time was 2 d earlier than the control group. Conclusion: After treated with concentrated sulfuric acid for 8 min, treated with 170 mg/L CTK for 12 h, then soaked in 2% KNO3 for 12 h, the germination rate and uniformity of seeds can be greatly improved.