不同海拔贝苞凤仙花的生理特性  

Physiological Response of Impatiens conchibracteata at Different Altitudes

作　　者：刘芳[1] 吴三林[1] 刘超[1] 唐梅[1] 许星宇[1] 

机构地区：[1]乐山师范学院峨眉山生物多样性保护与利用研究所,四川乐山614000

出　　处：《贵州农业科学》2015年第8期46-48,共3页Guizhou Agricultural Sciences

基　　金：四川省教育厅资助项目"峨眉山特有凤仙花属植物种质资源收集及开发应用"(11ZB216)

摘　　要：为探明凤仙花对海拔变化的适应机制,为其在园林上的应用提供理论依据,以峨眉山贝苞凤仙花为研究材料,测定不同海拔（864～2 512m）其叶片的抗氧化酶活性、MDA含量以及叶绿素含量。结果表明：峨眉山贝苞凤仙花叶片的超氧化物歧化酶（SOD）随海拔升高呈缓慢上升趋势,过氧化物酶（POD）和过氧化氢酶（CAT）随海拔升高呈先增高后降低;丙二醛（MDA）含量与海拔高度呈正相关;叶绿素a（Chl a）和叶绿素b（Chl b）整体呈下降趋势,而Chl a与Chl b的比值则呈增加趋势。结论：在海拔1 261～1 775m区域最适宜贝苞凤仙花的生长。To study the physiological mechanisms of I. conchibracteata in environment adaptation, and provide a theoretical reference of the introduction and cultivation in landscape, the autioxidant enzyme activities, MDA content and Chl content in leaves of I. conchibracteata from different altitudes （864 to 2 512 m） were measured. Results.With the altitude increasing,SOD activity increased slowly, the activity of POD and CAT initially increased but then decreased. MDA content in I. conchibracteata showed positive correlation with altitude. Chl（a＋b） reduced with the increasing of altitude, However the Chl a/ Chl b was the opposite. In general, 1 261 ～ 1 775 m is the best altitude for the growth of I. conchibracteata.

关 键 词：贝苞凤仙花 抗氧化系统 适应性 海拔 

分 类 号：S685[农业科学—观赏园艺]