摘要
分别以含不同浓度(0、0.1%、0.3%、0.5%、0.8%)NaCl的1/4改良Hoagland营养液处理1年生观音竹盆栽苗,测定胁迫后第5、9、13、17、21、25天后叶片的各项生理生化指标及植株生物量。结果表明,随着NaCl胁迫增强,观音竹叶片的细胞质膜透性、丙二醛(MDA)含量和叶绿素a/b比值提高,茎叶和根生物量、根冠比、叶绿素(a+b)含量、叶绿素a含量及叶绿素b含量降低,超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)活性及可溶性蛋白质含量均呈先增后降的趋势。观音竹适宜在NaCl浓度低于0.5%的土壤中生长,否则其生长会受到抑制。
One-year-old Bambusa multiplex grown in pots were watered with 1/4-strength modified Hongland solution respectively containing 0, 0.1%, 0.3%, 0.5%, and 0.8% of NaCI. Changes in physiological and biochemical indicators of leaves and plant biomass associated with salt tolerance were investigated at the S th, 9 th, 13 th, 17 th, 21st and 25 th day. The results showed that most variables were affected with NaC1 showing decreases in： root-to-shoot ratio, Cb.]a, Cb.lb and Chl（a ＋ b） content, fresh and dry weight and increases in cell membrane permeability, malondialdehyde content and chla/b ratio. In this study, Superoxide dismutase, poroxidase and catalase activities and the protein content were increased, firstly, and decreased afterwards. Bambusa multiplex var. riviereorum plants can tolerate salt levels less than 0. 5% NaCl without showing significant physio-morphological alterations.
出处
《福建林学院学报》
CSCD
北大核心
2012年第1期23-27,共5页
Journal of Fujian College of Forestry
基金
福建省重点基金资助项目(2009N0006)
福建省重大基金资助项目(2011N5002)
关键词
观音竹
NACL胁迫
生物量
生理生化指标
Bambusa multiplex vat. riviereorum
NaCl stress
biomass
physiological and biochemical index
