低温胁迫对蓝靛果忍冬抗寒性的影响

摘要

为了筛选蓝靛果忍冬抗寒品种,以9个蓝靛果忍冬品种(蓝鸟、伊利亚特、炭火、谢丽娜、加洛奇卡、落火炭、别列里、蓝纺锤及阿索里)1年生枝条为材料,研究低温胁迫(-15、-20、-25、-30、-35、-40℃)对蓝靛果忍冬电导率及忍冬抗氧化酶活性的影响.结果表明:各试验品种的抗寒性随着温度的变化而变化,在-15～-25℃之间的电导率较小,SOD活性较高,POD活性在-25～-40℃时较高,所有品种的SOD、POD、CAT活性的变化趋势基本一致.在-15～-20℃期间,蓝纺锤抗寒性表现最好;在-30～-40℃期间,加洛奇卡,别列里以及落火炭的抗寒性优于其它品种.%In order to screen out some cold-resistant cultivars in Lonicera caeruleae,using one-year-old branches from nine cultivars in L.caeruleae (Blue jays,Iliad,Coals,Li-na xie,Γaлoчкa,Charcoal,Bepeль,Blue spindle and Azauri) as materials,influences of low temperature stress (-15,-20,-25,-30,-35 and-40 ℃) on conductivity and antioxidant enzyme activity in L.caeruleae were studied.The results showed that:cold resistance of the tested varieties changed with temperature changing,electrical conductivity was less and SOD activity was higher from-15 ℃ to-25 ℃,POD activity was higher from-25 ℃ to-40 ℃,and change tendencies of SOD,POD and CAT activities in all the cultivars were basically the same.During the period of-15 ℃ to-20 ℃,Blue spindle had the best cold-resistant expresssion.During the period of-30 ℃ to-40 ℃,cold resistances of Faлoчκa,Бepeль and Charcoal were superior to the other cultivars.