An efficient method in breaking of dormancy from Bunium luristanicum seeds
Authors
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Mohsen Zafaranieh
*
1
- Masoud Ziae 2
Abstract
Abstract. Nowadays, in many rangelands, due to over grazing, and problems that some plants have in germination, the rate of forage production is greatly reduced. So to take advantages of the benefits of such plants, it is necessary to identify and remove barriers of germination and establishment of suitable plants. A study was carried out to investigate the effects of seed dormancy breaking treatments on Bunium luristanicum germination. The experiment was conducted in Vali-e-Asr University of Rafsanjan in 2021. Treatments were arranged in a Completely randomized design (CRD) with five replication. The highest germination percentage was recorded in seeds treated with GA3+hot water (700C) 82 % and GA3+ H2SO4 (50%) 80%, seed scarification with hot water was better than H2SO4, because H2SO4 increased abnormal seedling percentage. The highest seedling weight was recorded in the treatments of GA3 + H2SO4 50% 16.9 mg and GA3 + hot water 70°C 14.9mg. Highest abnormal seedling was shown in H2SO4 75%, GA3 (500 ppm) + H2SO4 75% and KNO3 (1%) + H2SO4 75 % treatments (14%, 14% and 12% respectively (p<0.01). The maximum seedling vigor index was obtained in seeds treated with GA3 (500 ppm) + hot water 700C. Results indicated Bunium luristanicum seeds scarification with hot water 700C (10 min) followed by socking in GA3 (500 ppm) for 12 hour was the most effective treatment for seed dormancy breaking, and improved seedling growth.
