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Effect of Water Stress on Growth and Physiological Characteristics of Isatis tindigotica Root
Authors
丁永华
梁宗锁
王竹承
Publication date
1 January 2010
Publisher
Abstract
选用产自陕北黄土高原的菘蓝种子,用盆栽称量控水法,研究水分胁迫对菘蓝幼苗生长和生理特性的影响。研究发现,随着干旱胁迫程度的加深,菘蓝叶片长度、宽度均受到明显的抑制,根冠比明显增大,Pro、可溶性糖、超氧阴离子含量均有所升高,类胡萝卜素含量下降。同时,在同一水分水平下,随胁迫时间的延续,可溶性蛋白、Vc、类胡萝卜素含量均先下降后升高;叶片保护酶SOD、CAT、POD活性上下波动;超氧阴离子、可溶性糖含量逐渐升高。研究结果认为,土壤干旱明显抑制菘蓝生长,同时其保护酶系统和渗透调节物质能够快速变化以适应外部环境,维持植株的正常生理代谢功能,因此,菘蓝具有较强的抗旱能力
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 21/09/2018