接种DSE下黄芪光合特征对高温胁迫的响应及因素分析

毕银丽,冯馨月,柯增鸣

Response of photosynthetic characteristics of Astragalus to high temperature stress and influencing factor analysis under DSE inoculation

BI Yinli,FENG Xinyue,KE Zengming

表3 黄芪叶片光合指标的Spearman相关性分析

Table 3 Spearman correlation analysis of photosynthetic indexes in leaves of Astragalus membranaceus

影响因素 Influencing factors 光合特征指标 Photosynthetic characteristic index 蒸腾速率 Transpiration rate 净光合速率 Net photosynthetic rate 胞间CO2浓度 Intercellular CO2 concentration 气孔导度 Stomatal conductance 土壤化学性质 Soil chemistry 速效磷 Available phosphorus * NS * NS 速效钾 Available potassium ** ** ** ** 有机质 Organic matter ** ** ** ** 电导率 Conductivity NS NS ** NS 酸碱度 pH NS NS NS NS 根系指标 Root system indicator 根长 Root length ** ** NS ** 平均根直径 Average root diameter ** ** ** NS 光合色素 Photosynthetic pigments 叶绿素a Chlorophyll a * ** ** ** 叶绿素b Chlorophyll b NS * ** NS 叶片形态特征 Leaf morphological characteristics 叶片长 Blade length * ** ** ** 气孔张开密度 Stomatal opening density ** ** ** **