摩素淳对苹果幼苗生长及抗旱性的影响

采用盆栽控水的方法研究了干旱条件下叶面喷施摩素淳对苹果幼苗生长和抗旱性的影响。结果表明,在正常和干旱条件下,摩素淳均能促进苹果幼苗的生长,且干旱条件下的促进效果较为显著。正常和干旱条件下摩素淳能明显提高光合速率和水分利用效率,促进有机物质的积累。在干旱条件下摩素淳能增加游离氨基酸、可溶性糖和脯氨酸3种有机渗透调节物质的含量,维持或提高SOD和CAT活性,降低膜相对透性和MDA含量,防止或降低了膜脂过氧化作用对膜的伤害。这说明,干旱条件下摩素淳能提高苹果树苗的渗透调节能力,恢复或维持正常代谢水平,提高植物的抗旱性。

The Effect of Mosuchun on Growth and Drought Resistance of Apple Seedlings

Effect of mosuchun on growth and drought resistance of the apple seedlings was studied under water stress using pot-culture experiments simulating soil drought status.The results showed that the growth of apple seedlings was promoted by mosuchun under normal water and drought conditions,and under drought the promoting effect was more notable.Under normal water and drought condition mosuchun can raise photosynthetic rate and water use efficiency(WUE).Under middle level drought condition mosuchun can increase content of soluble organic osmoticum(Pro,amino acid and sugars),maintain or raise the activity of SOD and CAT,and decrease permeability of plasma and content of MDA.Therefore it can be concluded that mosuchun can maintain(or recover) normal metabolism and osmotic adjustment ability of apple seedlings under drought condition,and increase drought resistance of the plant.