期刊论文

Screening optimum concentration of exogenous Spd to defend against physiological damage of Toona ciliata under drought stress

中文

中南林业科技大学学报

1673-923X

2019

39

5

10-15

10.14067/j.cnki.1673-923x.2019.05.002

国家重点研发计划项目（2016YFD06006005）；

本校为第一机构

为了筛选出外源亚精胺防御红椿干旱胁迫生理损伤的最佳浓度,以2年生红椿家系盆栽苗为研究对象,开展了外源Spd多浓度预处理+干旱胁迫处理试验,并对叶片相对含水量、叶绿素含量、超氧化物歧化酶(SOD)活性、过氧化物酶(POD)活性、游离脯氨酸含量和丙二醛含量等6个生理指标的观测数据和最佳浓度进行了综合研究,得出以下结果:1)4种外源亚精胺溶液对6个生理指标在不同干旱胁迫处理下的防御效果均达到了极显著差异(P < 0.01)。2)1 mmol/L和2 mmol/L外源Spd预处理对植株叶片相对含水量、叶绿素含量、游离脯氨酸含量和丙二醛含量等4个生理指标的防御效果更好,且均遵守干旱胁迫程度越轻则生理损伤防御效果...

A experiment of “exogenous Spd pretreatment with multiple concentrations + drought stress” was carried out with twoyear potted seedlings of Toona ciliata families in order to screen out the optimum concentration of exogenous Spd on defending against physiological damage of Toona ciliata under drought stress. Observational data and optimal concentration of six physiological indexes including leaf relative water content, chlorophyll content, superoxide dismutase (SOD) activity, peroxidase (POD) activity, free proline content and malondialdehyde...