首页|期刊导航|中国农业科学(英文版)|Chilling Tolerance and Physiological Parameters as Influenced by Grafting in Watermelon Seedlings
中国农业科学(英文版)2003，Vol.2Issue(10)：1164-1169,6.
Chilling Tolerance and Physiological Parameters as Influenced by Grafting in Watermelon Seedlings
Chilling Tolerance and Physiological Parameters as Influenced by Grafting in Watermelon Seedlings
摘要
Abstract
The influences of different rootstocks on chilling tolerance and physiological parameters in wa-termelon seedlings have been studied. The results showed that grafting improved the chilling tolerance. Com-pared with own-rooted watermelon seedlings, the grafted watermelon seedlings had lower chilling injury index,lower electrolytic leakage (%), lower malondialdehyde (MDA) content, higher chlorophyll and proline con-tent, and higher activities of superoxide dismutase (SOD), ascorbate peroxidase (AsA-POD) and de-hydroascorbate reductase (DR) in the leaves under iow temperature stress. There was a considerable differenceof chilling tolerance among different grafted watermelon seedlings due to the difference of rootstock chillingtolerance. After low temperature treatment, the grafted seedling with higher chilling tolerance had lower elec-trolytic leakage ( %), lower MDA content, higher proline content and higher activities of SOD, AsA-POD andDR in the leaves compared with the grafted seedling with weaker chilling tolerance. From these, we could con-clude that chilling tolerance of watermelon seedlings may be related to higher antioxidative ability and mem-brane stability in the plants. The chilling tolerance of grafted seedling could be properly evaluated by compre-hensive physiological indexes but not a single physiological index.关键词
Watermelon/Low temperature stress/Grafted seedling/Chilling toleranceKey words
Watermelon/Low temperature stress/Grafted seedling/Chilling tolerance分类
农业科技引用本文复制引用
LIU Hui-ying,ZHU Zhu-jun,LU Guo-hua,QIAN Qiong-qiu..Chilling Tolerance and Physiological Parameters as Influenced by Grafting in Watermelon Seedlings[J].中国农业科学(英文版),2003,2(10):1164-1169,6.基金项目
This work has been supported by the NationalNatural Science Foundation of China (30230250)and the Ministry of Science and Technology of China (2001BAS03B08-2). （30230250）
