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10℃低温对西瓜幼苗耐性生理指标的影响
引用本文:彭金光,孙玉宏,师瑞红,谢国生.10℃低温对西瓜幼苗耐性生理指标的影响[J].安徽农学通报,2006,12(10):42-45.
作者姓名:彭金光  孙玉宏  师瑞红  谢国生
作者单位:1. 武汉市农业科学研究所,湖北,武汉,430051
2. 华中农业大学植物科学技术学院,湖北,武汉,430070
基金项目:武汉市晨光计划资助项目(N0.20045006071-36)
摘    要:以4叶1心期西瓜幼苗为材料,研究了10℃低温处理下3种西瓜幼苗早佳8424(冷敏感型)、万福来(中等)和野西瓜(耐冷型)的电导率、脯氨酸、可溶性糖、POD和SOD的变化规律。结果表明:西瓜幼苗的电导百分率、POD、脯氨酸随处理时间的延长而增加;SOD的活性在耐性品种中增加,敏感品种先增后降;可溶性糖含量在耐性品种呈先降后升,其它品种呈增加的趋势。根据上述生理指标的分析,我们初步研究耐冷性与冷敏感品种的生理差异。

关 键 词:西瓜幼苗  低温  脯氨酸  可溶性糖  POD和SOD
文章编号:1007-7731(2006)10-42-04
收稿时间:2006-09-04
修稿时间:2006年9月4日

Effects of 10C Low Temperature on Physiological Index of Hardness in Watermelon Seedlings
Peng Jinguang,Sun Yuhong,Shi Ruihong,Xie Guosheng.Effects of 10C Low Temperature on Physiological Index of Hardness in Watermelon Seedlings[J].Auhui Agricultural Science Bulletin,2006,12(10):42-45.
Authors:Peng Jinguang  Sun Yuhong  Shi Ruihong  Xie Guosheng
Abstract:The effects of 10-degree low temperature treatment on physiological characteristics of the seedlings of three watermelon varieties,such as Zao-Jia 8424(cold-sensitive type),Wan-Fu-Lai(moderate cold tolerant type),Wild watermelon(cold tolerant type) were investigated at four-leaf stage.The results demonstrated that,The leakage of electrolytes,the content of Proline and the activities of Peroxidase(POD) were increased with the extension of low temperature treatment in all the three varieties tested,the activities of Superoxidase(SOD) of Wan-Fu-Lai and Wild watermelon increased otherwise that of Zao-Jia 8424 increased first,and then declined.The soluble sugar of Wild watermelon displayed the trend to declining-rising.And however,Zao-Jia 8424 and WanFu-Lai show the trend to rising with the extension of low temperature treatment.
Keywords:Watermelon seedlings  low temperature  Proline  soluble sugar  Peroxidase  Superoxidase
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