南方农业学报2011，Vol.42Issue(10)：1189-1192,4.
自然降温对不同生长期甘蔗生理生化指标的影响
Effect of natural low temperatures on the physio-biochemical indices of sugarcane at different growth stages
摘要
Abstract
[Objective]The objective of present experiment was to study the effects of natural decrease in temperatures on the physio-biochemical indices of sugarcane at different growth stages, and to understand the mechanism of cold resistance in sugarcane. [Method]The malondialdehyde (MDA), proline (Pro) and soluble protein (SP) contents, and activity of peroxidase (POD) were investigated in leaves of sugarcane varieties GT28 and ROC22 at different growth stages under natural low temperature conditions. [Result]The MDA and SP content, and POD activity of leaves showed similar trends in both sugarcane varieties at different growth stages under natural low temperatures, and found maximum to minimum in following order: seedling stage of plant cane＞seedling stage of ratoon cane＞elongation stage of plant cane＞maturity stage of plant cane. The MDA content and POD activity in leaves of variety GT28 were lower than those in ROC22 at the same growth stage, while Pro and SP content in GT28 were higher than those in ROC22. [Conclusion]Cold resistance of sugarcane varieties (performance at maturity stage) can be evaluated by analyzing the physiological indicators at seedling stage of plant crop.关键词
甘蔗/自然降温/生理生化指标/变化Key words
sugarcane/ low temperatures/ physio-biochemical indicators/ change分类
农业科技引用本文复制引用
何静丹,李志刚,覃铃铃,陆思思..自然降温对不同生长期甘蔗生理生化指标的影响[J].南方农业学报,2011,42(10):1189-1192,4.基金项目
广西科学基金项目(0991048,2011GX NSFA018067) （0991048,2011GX NSFA018067）
国家科技支撑计划项目(2008BADB8B00) （2008BADB8B00）
