5-氨基乙酰丙酸(ALA)对遮光环境下菘蓝的生长、叶片气孔气体参数和生物碱含量的影响  

Effects of 5-aminolevulinic acid (ALA) on the growth, leaf stomatal gas exchange, and leaf alkaloids content of Isatis indigotica under shading condition

作　　者：唐晓清[1] 王康才[1] 肖云华[1] 汪良驹[1] 

机构地区：[1]南京农业大学园艺学院,南京210095

出　　处：《生态学杂志》2013年第5期1155-1160,共6页Chinese Journal of Ecology

基　　金：国家自然科学基金项目(31171486)资助

摘　　要：研究了不同浓度的5-氨基乙酰丙酸(ALA)处理遮光环境对菘蓝(Isatisindigotica)生长和靛蓝、靛玉红含量的影响。结果表明:遮光显著降低菘蓝幼苗叶片叶绿素含量、光合气体交换参数、根长、根径、生物量以及靛蓝、靛玉红含量,而外源ALA处理可以缓解遮光对菘蓝营养生长、光合作用以及生物碱积累的抑制效应;其中,13.3～25mg·L-1的ALA对营养生长以及光合作用的促进效应最明显,而100mg·L-1的ALA对生物碱积累的促进效应最明显。作者建议,在弱光条件下,用低浓度ALA处理可以提高菘蓝生物学产量,而在生物碱积累期,用较高浓度ALA处理可以提高菘蓝的药用成分含量。This paper studied the effects of different concentration 5-aminolevulinic acid （ALA） on the growth and alkaloids （indigo and indirubi ） content of Isatis indigotica seedlings under shading content, condition. Shading decreased the root length and diameter, plant biomass, chlorophyll photosynthetic gas exchange parameters, and alkaloid content of the seedlings signifi- cantly, while exogenous ALA could alleviate the inhibition effect of shading on the vegetative growth, photosynthesis, and alkaloid accumulation of the seedlings. Spraying 13.3-25 mg·L^-1 of ALA was most effective to promote the vegetative growth and photosynthesis, and spraying 100mg·L^-1of ALA was most effective to promote alkaloids accumulation. It was suggested that un- der low light condition, spraying low concentrations （13.3-25 mg·L^-1） ALA at the early growth stage of I. indigotica could promote its biomass production, and spraying higher concen- tration （ 100 mg·L^-1 ） ALA could promote the alkaloid production of I. in digotica for medical purpose.

关 键 词：菘蓝 5-氨基乙酰丙酸 遮阴 生长 光合作用 生物碱 

分 类 号：S567.239[农业科学—中草药栽培]