Effects of hydroponic stem size on yield and nutritional quality of Aralia elata
To screen out the optimal hydroponic stem sizes for off-season production of Aralia elata,hydroponics of stems of varying lengths and diameters were carried out in the greenhouse to study their effects on the germination rate of terminal buds,yield and nutritional components such as soluble protein,vitamin C.The results indicate that the germination rate of terminal buds and yield gradually increased with increasing length and diameter of hydroponic stem,accompanied by a gradual increase in nutritional content.The terminal buds with a diameter exceeding 20 mm and a length exceeding 50 cm all successfully germinated from the hydroponic stem.The terminal buds with a diameter exceeding 15 mm and a length exceeding 60 cm,and the weight of the terminal buds exceeded 20 g.The hydroponic stem size significantly affected the nutritional quality of terminal buds including polysaccharides,soluble sugars,soluble proteins,and vitamin C.The nutritional components progressively increased with increasing diameter and length of the hydroponic stem as well.Considering the shaping and pruning techniques for A.elata,it is suggested to use a hydroponic stem size with a diameter of(20±0.2)mm and a length of 50～60 cm for production.
万方数据
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