低温对膜荚黄芪不定根总黄酮积累的影响  

Effects of Low Temperature on Accumulation of Total Flavonoids in Adventitious Roots of Astragalus membranaceus

作　　者：付爽[1] 汪洋[1] 吕爽[1] 刘佳[1] 全雪丽[1] 吴松权[1] 

机构地区：[1]延边大学农学院,吉林延吉133002

出　　处：《北方园艺》2017年第22期154-157,共4页Northern Horticulture

摘　　要：以2种不同海拔高度(安图和长白山)的膜荚黄芪种质为试材,采用低温和低温光照对其进行处理,以常温为对照,研究低温对其不定根总黄酮积累的影响。结果表明:安图膜荚黄芪在低温处理时总黄酮积累需要光照,第8天时达到最高值(2.37mg·g^(-1)),是其同时期对照组的1.30倍,而且这种总黄酮的积累也使其抗氧化活性显著增加;常温下长白山膜荚黄芪总黄酮含量显著高于安图膜荚黄芪,但是其含量不受低温和光照的影响。这说明不同种质的膜荚黄芪具有不同的总黄酮生物合成规律。Two types of adventitious roots of Astragalus membranaceus from different altitudes（Antu and Changbai Mountian）were taken as materials to study the effect of the low temperature and low temperature plus light on accumulation of total flavonoids.The results showed that the total flavonoids of adventitious roots of A.membranaceusfrom Antu increased under low temperature which need light,and reached the maximum at the eighth day（2.37 mg·g^（-1））,which was 1.30-folds compared to the control,and the antioxidant activity increased significantly with the increase of total flavonoids;the total flavonoids of adventitious roots of A.membranaceus from Changbai Mountain was significantly higher than that in Antu,whereas total flavonoids of it were not affected by low temperature and low temperature plus light.It suggested that there were different mechanism of flavonoid biosynthesis in different germplasms of A.membranaceus.

关 键 词：膜荚黄芪 不定根 低温 总黄酮 抗氧化活性 

分 类 号：S567.79[农业科学—中草药栽培]