上海农业学报2017，Vol.33Issue(5)：17-24,8.DOI:10.15955/j.issn1000-3924.2017.05.04
外源6-BA对镉胁迫下茄子幼苗生长、光合特性和内源激素含量的影响
Effects of exogenous 6-BA on the growth, photosynthetic characteristics and endogenous hormone content in eggplant seedlings under cadmium stress
摘要
Abstract
The effects of exogenous 6-BA on the growth,chlorophyll contents,photosynthetic characteristics and endogenous hormone contents of eggplant(Solanum melongena L.) seedlings of'Huqie 08-1'by subtrates culture method were studied under cadmium stress.The results showed that compared with the control,the plant growth,chlorophyll a (Chl a) content,chlorophyll b (Chl b) content,total chlorophyll a + b (Chl a + b) content,the photosynthetic rate (Pn),stomatal conductance (Gs),transpiration rate (Tr),cytokinins (CTK) and indoleacetic acid(IAA) content,the ratio of CTK/ABA and IAA/ABA of eggplant seedling significantly decreased,while intercellular CO2 concentration(Ci),abscisic acid (ABA)content significantly increased under cadmium stress.The longer the treatment time,the higher the Cd concentration,the greater the change.Under cadmium stress,exogenous 6-BA significantly dececreased Ci,ABA content,while Chl a content,Chl b content,Chl a + b content,Pn,Gs,Tr,contents of CTK and IAA,the ratio of CTK/ABA and IAA/ABA significantly increased.The results suggested that exogenous 6-BA played an important role in enhancing the resistance to cadmium stress of eggplant seedlings and elevated the tolerance of plants through keeping high chlorophyll content,photosynthesis and hormone content.关键词
6-BA/茄子/Cd胁迫/气体交换参数/内源激素Key words
6-BA/Eggplant/Cadmium stress/Gas exchange parameters/Endogenous hormone分类
农业科技引用本文复制引用
杨晓春,朱宗文,张爱冬,吴雪霞,查丁石..外源6-BA对镉胁迫下茄子幼苗生长、光合特性和内源激素含量的影响[J].上海农业学报,2017,33(5):17-24,8.基金项目
上海市农委基础项目[沪农科攻字(2015)第6-2-3号] （2015）
国家大宗蔬菜体系(CARS-25) （CARS-25）
