淹水胁迫对湖北海棠生长及光合作用的影响  

Effects of Waterlogging Stress on the Growth and Photosynthesis of Malus hupehensis (Pamp) Rehd

作　　者：张虎[1] 姜文龙[2] 武启飞 张往祥[2] 曹福亮[2] 

机构地区：[1]江苏农林职业技术学院,句容212400 [2]南京林业大学

出　　处：《东北林业大学学报》2017年第12期22-26,共5页Journal of Northeast Forestry University

基　　金：江苏省科技重点研发计划(BE2016332);江苏省高等职业院校国内高级访问学者计划项目(2015FX026)

摘　　要：以1年生湖北海棠实生苗为试验材料,研究了淹水胁迫对湖北海棠生长以及光合作用的影响。结果表明:在淹水初期(0~15 d),湖北海棠苗高生长受到的抑制作用不显著,而在淹水后期(15~35 d),抑制程度显著加剧,最终苗高表现为对照的10.7%;淹水胁迫整体对湖北海棠地径的抑制作用不显著。净光合速率、气孔导度以及气孔限制值在淹水期间均显著低于常规管理,而细胞间隙CO2摩尔分数受淹水的影响不显著;在淹水胁迫下,湖北海棠叶片花青素、类胡萝卜素相对质量分数显著高于对照,而叶绿素相对质量分数则显著低于对照。综上,湖北海棠是一种耐水性较强的苗木。With 1-a Malus hupehensis seedling,we studied the effects of flooding stress on the growth and photosynthesis of M.hupehensis. In the early,the stage of flooding( 0-15 d),the inhibition of the growth of M. hupehensis was not significant,and the degree of inhibition was significantly increased at the later stage of flooding( 15-35 d),and the final seedling height was 10.7%. The inhibitory effect of flooding stress on the diameter of M.hupehensis was not significant. Photosynthetic rate,stomatal conductance and stomatal limitation were significantly lower than those of the control during flooding,while intercellular CO_2 concentration was not significantly affected by flooding. Under the flooding stress,the relative contents of anthocyanins and carotenoids in the leaves of M. hupehensis were significantly higher than those of the control,while the relative contents of chlorophyll were significantly lower than those of the control. Therefore,M. hupehensis is a strong water resistance seedlings.

关 键 词：湖北海棠 淹水胁迫 光合作用 

分 类 号：S718[农业科学—林学] Q945[生物学—植物学]