Nghiên cứu nhân giống hữu tính sâm Ấn Độ (Withania somnifera L.) tại Hà Nội

Abstract

Research on sexual propagation of Indian ginseng (Withania somnifera L.) in a nursery in Hanoi showed that: The optimum time for sowing Indian ginseng seeds was August, the highest germination rate reached 70.33%. The rate of seedlings outplanting reached 67.49%. The most effective treatment was GA3 at 500ppm concentration for 30 minutes achieved the highest germination rate of 70.67% and the highest percentage of seedlings outplanting (reaching 67.85%). Sowing medium is clean soil, sand (ratio 1:1); The composition of the potting medium: 94% soil, 5% compost, 1% Superphotphat. Seedlings with 3-4 true leaves, plants that meet the criteria for vigor when put in the pot and are absorbed nutrients from the ingredients to make the potting medium with moderately developed roots in the pot are the most suitable, for the best ratio. highest survival rate. Using 1% superphosphate foliar fertilizer, periodically watering every 10 days for seedlings in the pot was the most appropriate. Seedlings in the pot after 45 days could be outplanting. The time from sowing to planting was more than 3 months (90-100 days). The number of leaves reached 7.84 ± 2.04 (leaves), the tree height reached 32.54 ± 2.47(cm); number of branches reached 1-2 (branches); root length: 8.36 ± 2.17(cm), plants not infected with pests and diseases.