摘要
以不同产地鱼腥草为试材,研究了不同干燥方式、甲醇浓度、pH值、超声浸提时间和浸提温度对鱼腥草浸提液刺激瓜列当种子发芽的影响。结果表明:不同产地的鱼腥草对列当发芽率影响不同,产自广西的鱼腥草发芽率较高;不同干燥方式对鱼腥草刺激列当发芽率的影响无明显规律;甲醇浸提液刺激列当发芽较高,且发芽率随甲醇浓度的增加而升高,100%甲醇浸提效果最好;弱碱性与中性溶剂下浸提液不能刺激瓜列当种子发芽,而在pH 4.0溶剂浸提下可以刺激瓜列当种子发芽;瓜列当种子发芽率随着浸提液超声时间延长及温度升高而降低。
Distilled water and methanol extracts from Houttuynia cordata roots by different treatments（drying method,methanol concentration,pH,ultrasonic time,and extraction temperature） were used to stimulate Orobanche aegyptiaca seeds germination.The results indicated that O.aegyptiaca germination rates were different among the samples collected from different locations,the higher one was Guangxi;non-regular behaviors were found among the samples under different drying methods treatments.Methanol was the optimal solvent than water in the extraction of stimulant.Solvents with higher methanol concentration could extract more germination stimulants.The extracts under weakly acidic condition（pH 4.0） could stimulate O.aegyptiaca seeds germination,while it didn＇t induced the seed germination under weakly alkaline or neutral conditions.Longer ultrasonic time and higher extraction temperature could not extract more germination.
出处
《北方园艺》
CAS
北大核心
2013年第4期168-172,共5页
Northern Horticulture
基金
国家"十二五"科技支撑计划资助项目(2011BAD31B05)
关键词
鱼腥草
瓜列当
不同处理方式
浸提
Houttuynia cordata
Orobanche aegyptiaca
different treatments
extracts
