摘要
以甘肃苦水及辽宁开原引进苦水玫瑰种源和冷香玫瑰为供试材料,选择2个品种的1年生离体休眠枝条为试材,通过-25、-30、-35、-38(哈尔滨地区极限温度)、-40℃低温胁迫处理,分别对其相对电导率,超氧化物歧化酶(SOD)、过氧化物酶(POD)活性,游离脯氨酸、可溶性蛋白质量分数的动态变化进行测定与分析,并通过恢复试验评级其抗寒性。结果表明:苦水玫瑰低温胁迫半致死温度为-43.3℃,冷香玫瑰低温胁迫半致死温度为-44.9℃,冷香玫瑰较苦水玫瑰对低温胁迫的耐受能力强,与恢复生长试验结果相吻合。
Rosa rugosa ＇ kushui＇ and Rosa rugosa ＇ lengxiang＇ were introduced from Kushui in Gansu Province and Kaiyuan in Liaoning Province to Harbin, respectively. Cold stress treatment was conducted on the two varieties using one-year-old de- tached dormant branches as research objects. The relative electrical conductivity, SOD activity, POD activity, free proline content, and soluble protein content were measured under different temperatures （-25, -30, -35, -38, -40 degrees C）. The semilethal temperatures （ LTs0 ） of R. rugosa ＇ kushui＇ and R. rugosa ＇ lengxiang＇ are -43.3 and -44.9 de- grees C. The cold resistance of R. rugosa ＇ lengxiang＇ is a little higher than that of R. rugosa ＇ kushui＇ , which is consist- ent with the result of recovery growth experiment.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2012年第11期28-30,34,共4页
Journal of Northeast Forestry University
关键词
苦水玫瑰
冷香玫瑰
低温半致死温度
抗寒性
Rosa rugosa ＇ kushui＇
Rosa rugosa ＇ lengxiang＇
Semilethal temperatures
Cold resistance
