期刊论文

Influence of drought stress on the growth, leaf gas exchange, and chlorophyll fluorescence in two varieties of tung tree seedlings

Tan, X.F.

中文

生态学报

1000-0933

2017

37

5

1515-1524

10.5846/stxb201509201939

国家林业公益性行业科研重大专项（201204403） 湖南省研究生科研创新项目（CX20158286） 中南林业科技大学研究生科技创新基金资助项目（CX2015A01）

本校为第一且通讯机构

为了探究干旱胁迫对两种油桐(三年桐和千年桐)幼苗光合生理特性的变化及响应,采用盆栽试验,研究不同水分处理(正常供水、轻度干旱、中度干旱、重度干旱)对油桐幼苗生长、叶片气体交换及叶绿素荧光参数的影响。结果表明:与对照相比,轻度干旱胁迫对两种油桐生长、气体交换及叶绿素荧光参数无明显影响(P>0.05);中度干旱及重度干旱使两种油桐的叶绿素SPAD值、生长量、净光合速率(Pn)、气孔导度(G_s)、蒸腾速率(T_r)、气孔限制值(L_s)、最大净光合速率(P_(nmax))、光饱和点(LSP)、表观量子效率(AQY)、暗呼吸速率(R_d)、最大光化学效率(F_v/F_m)、实际光化学量子效率(Ф_(PSⅡ))、电子传递速率(ETR)及...

This study investigated the effects of drought stress on seedling growth and leaf photosynthetic physiological characteristics in two species of tung tree (Vernicia fordii and Vernicia montana). A pot experiment was conducted to study the effects of different water treatments (normal irrigation, light drought, moderate drought, and severe drought) on the growth, leaf gas exchange, and chlorophyll fluorescence of two kinds of tung tree seedlings. The results showed that light drought stress did not have any significant effect (P>0.05) on growth,...