期刊论文

Effects of NaCl stress on growth and physiological characteristics of Dalbergia hupeana seedlings

中文

植物生理与分子生物学学报

1671-3877

2020

56

02

309-316

10.13592/j.cnki.ppj.2019.0152

湖南省林业科技计划项目（XKL201717）； 国家林业局“十三五”重点学科项目（[2015]44）； 湖南省教育厅“十二五”重点学科项目（2011-76）； 中南林业科技大学研究生科技创新基金项目（20183011）； 湖南高校一流本科专业（湘教通[2019]138号）园林专业~~；

本校为第一机构

为探究黄檀的耐盐性,采用盆栽实验,研究NaCl胁迫对黄檀幼苗生长和生理特性的影响。结果表明:随NaCl浓度的增加,黄檀幼苗叶片的盐害症状明显,地径生长量和叶片相对含水量逐渐降低;随NaCl胁迫时间的延长, 0.2%和0.4% NaCl处理下,黄檀幼苗叶片的叶绿素a、叶绿素b和类胡萝卜素含量均能保持较高水平,对株高生长量有一定的促进作用; 0.6%、0.8%和1.0% NaCl处理的则逐渐下降。在NaCl胁迫14 d后, SOD、POD活性和可溶性糖含量随NaCl浓度的增加呈先上升后下降的趋势,且在0.4% NaCl处理下达到峰值;可溶性蛋白含量则随NaCl浓度和处理时间的增加呈下降趋势。由此可知:黄檀幼苗能够适应0.2%~0.4% NaCl浓度胁迫...

To explore the salt tolerance of Dalbergia hupeana, the effects of NaCl stress on growth and physiological characteristics of D. hubeana seedlings were investigated by pot experiment. The results showed that With the increase of NaCl concentration, the salt damage symptoms in leaves of D. hupeana seedlings were more obvious, and the stem diameter growth and RWC of leaves decreased gradually. With the prolongation of NaCl stress time, the chl a, chl b and carotenoid contents of D. hupeana could maintain a high level under 0.2% and 0.4% NaCl trea...