莲藕膨大过程中内源激素、水杨酸和多胺含量的变化

 采用高效液相色谱(HPLC) 法, 对3个莲藕主栽品种根状茎膨大过程中内源激素、水杨酸(SA) 和多胺含量进行了分析。结果表明: 玉米素( ZT) 在1节期及3节期的第1节段含量最高; GA₃ 含量在1节期即快速上升, IAA和SA则在2节期后才快速升高, GA₃、IAA和SA在3节期均达最大值; 膨大过程中3品种IAA和SA含量均呈极显著正相关; ABA含量在3节期的第1节段最高, 第2节段最低; 成熟期大幅升高。精胺( Spm) 和腐胺( Put) 在膨大过程中含量高, 尸胺(Cad) 和亚精胺( Spd) 含量较低。

Changes of Endogenous Hormones, Polyamines and Salicylic Acid Content during Rhizome Development of Nelumbo nucifera Gaertn

By high performance liquid chromatography, the changes of endogenous hormones, polyamines, and salicylic acid(SA) content in 3 lotus cultivars' rhizome were studied. The results showed that the peak of zeatin content appeared at 1 internode stage and first internode of 3 internode stage rhizome. GA_3, IAA and SA content increased quickly from 1 and 2 internode stage, respectively; and all reached the highest at 3 internode stage; furthermore, IAA content was significantly correlated with SA at 0.01 level during rhizome development. ABA content in first internode was higher than that in second and third internode of 3 internode stage rhizome, and it increased fast in end stage of rhizome development. Spermine(Spm)and putrescine(Put)content were significantly higher than cadavarine(Cad)and spermidine(Spd)during rhizome development.