摘要
分析了干旱诱导下抽薹期甘蓝型油菜的生化指标和蒸腾作用变化及Ca2+处理对其影响。结果表明,在干旱胁迫下,甘蓝型油菜叶片中的脯氨酸、可溶性糖以及丙二醛含量明显增加,经Ca2+预处理其脯氨酸和可溶性糖含量明显高于仅用双蒸水处理的材料,而丙二醛含量则是蒸馏水处理的材料高于Ca2+预处理的材料;气孔导度日变化分析以及气孔观察显示,Ca2+预处理可以明显促使干旱过程中叶片表皮气孔关闭,进而使叶片蒸腾速率和气孔导度降低,从而减少了干旱条件下水分的蒸发。
Some experiments revealed that the Ca^2+ has a relationship with drought resistance: In this paper, some physiological and biochemical indexes were studied in order to analyze the effect Of Ca^2+ treatment on the:drought resistance on Brassica napus. The physiological and biochemical experiments revealed that the proline content and' the soluble sugar contents in the Ca^2+ treated B. napuswere much higher than that, of water treated B. napus. Otherwise, the content of malonadehyde in the Ca^2+ treated B. napus was lower than that of H2O treated B. napus. The transpiration and stomatal conductance analysis showed that the transpiration and stomatal conductance in the Ca^2+ treated materials were lower than that of water treated materials; further research revealed that the stomata hatch of Ca^2+ treated materials ,were :obviously less than that Of water treated materials,which indicated that the close of stomata was the main reason for the decrease of transpiration and stomatal conductance.
出处
《华中农业大学学报》
CAS
CSCD
北大核心
2007年第5期607-611,共5页
Journal of Huazhong Agricultural University
基金
国家自然科学基金重大研究计划项目(90202016)
岩溶动力学重点实验室开放基金资助
关键词
甘蓝型油菜
干旱诱导
生理生化指标
气孔观察
Brassica napus
drought induction
physiological and biochemical index
stomatic observation