中国麻业科学2017，Vol.39Issue(3)：130-135,6.
镉对3个苎麻品种生长和光合特性的影响
Effects of Cadmium on Growth and Photosynthetic Characteristics of Three Ramie Cultivars
摘要
Abstract
To study the difference of the different ramie cultivars under cadmium stress,"Zhong zhu 1","Hua zhu 5" and "Chuan zhu 8" were used as experimental materials,which have different cadmium accumulation ability.The influences of Cd stress (5,25,50 mg/L) on ramie biomass,leaf SPAD value and photosynthetic characteristics were studied in greenhouse.The results showed that Cadmium treatment inhibited the growth and photosynthesis of ramie.The plant height,biomass,SPAD and photosynthetic parameters were decreased under cadmium stress.The growth of different ramie cultivars was different under cadmium stress,and the sensitivity of ramie to cadmium was Zhong zhu 1 ＞ Chuan zhu 8 ＞ Hua zhu 5.The growth of Zhong zhu 1 was significantly promoted under low concentration (5 mg/L) cadmium,the growth of Hua zhu 5 and Chuan zhu 8 was less affected than Zhong zhu 1 under medium and high concentration (25 ～50 mg/L) cadmium,and the growth was more stable.The effect of different concentrations of cadmium on the photosynthetic characteristics of ramie was not consistent,and the change of parameter value was not correlated with the concentration.The main limiting factor of the decrease of photosynthetic rate of ramie was non-stomatal factor,and the responses of the three cultivars to photosynthetic parameters of cadmium stress were inconsistent.关键词
苎麻/镉/生长/SPAD值/气体交换参数Key words
ramie/cadmium/growth/SPAD value/photosynthetic gas exchange分类
农业科技引用本文复制引用
李雪玲,佘玮,李林林,刘楠楠,白玉超,崔国贤..镉对3个苎麻品种生长和光合特性的影响[J].中国麻业科学,2017,39(3):130-135,6.基金项目
国家麻类产业技术体系(CARS-19-E20) （CARS-19-E20）
国家自然科学基金(31471543) （31471543）
湖南省研究生科研创新(CX2015B232) （CX2015B232）
中国农业科学院科技创新工程(ASTIP-IBFC07) （ASTIP-IBFC07）
