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当前位置: 首页 > 文章 > 油菜素内酯对低温弱光胁迫下西瓜幼苗耐冷性的影响 北方园艺 2012 (7) 13-16
Position: Home > Articles > The Effect of Brassinolide on Chilling Resistance of Watermelon Seedlings under Low Temperature and Poor Light Stress Northern Horticulture 2012 (7) 13-16

油菜素内酯对低温弱光胁迫下西瓜幼苗耐冷性的影响

作  者：
范小玉;张显
单  位：
西北农林科技大学园艺学院
关键词：
油菜素内酯(BR);西瓜;幼苗;耐冷性;低温弱光
摘  要：
以‘辽引一号’西瓜品种为试材,于三叶一心期用0(CK)、0.01、0.05、0.10、0.50、1.00mg/L的油菜素内酯(BR)喷雾处理,在温度(10±1)℃,光照100μmol.m-2.s-1条件下胁迫,分析西瓜幼苗耐冷性的生理生化特性变化,以期筛选出提高西瓜幼苗耐冷性的最佳BR浓度。结果表明:通过油菜素内酯(BR)处理,可以显著降低西瓜幼苗冷害指数,提高SOD、POD和CAT活性,降低丙二醛、超氧阴离子自由基含量,其中0.10mg/L的BR喷施效果最佳。
译  名：
The Effect of Brassinolide on Chilling Resistance of Watermelon Seedlings under Low Temperature and Poor Light Stress
作  者：
FAN Xiao-yu,ZHANG Xian(College of Horticulture,Northwest Agriculture and Forestry University,Yangling,Shaanxi 712100)
关键词：
brassinolide;watermelon;seedling;chilling resistance;low temperature and poor light
摘  要：
Watermelon variety 'Liaoyin No.1' were treated at the age of three leaves by spraying brassinolide in the concentration of 0(CK),0.01,0.05,0.10,0.50,1.00 mg/L,and then were stressed under temperature(10±1)℃ and light 100 μmol·m-2·s-1.In order to improve chilling resistance of watermelon seedlings,the physiological and biochemical characteristics of watermelon seedlings were measured to screen a optimum concentration of brassinolide(BR).The results showed that the best seedlings growth was observed under the treatment 0.10 mg/L of BR,which could reduce the chilling injury index significantly,increase the activities of superoxide dismutase(SOD),peroxidase(POD) and catalase(CAT) and reduce the content of malondialdehyde(MDA) and superoxide anion radical.

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