%A WANG Jin-Liang, RUAN De-Chun, CHENG Zhi-Ying, YANG Chong-Ren %T THE DYNAMIC VARIATION OF 20-HYDROXYECDYSONE IN CYANOTIS ARACHNOIDEA %0 Journal Article %D 1996 %J Plant Diversity %R %P 1-3 %V 18 %N 04 %U {https://journal.kib.ac.cn/CN/abstract/article_30914.shtml} %8 1996-08-25 %X A quantitative analysis of 20-hydroxyecdysone was carried out by HPLC for Cyanotis arachnoidea and 13 other species of Commeliaceae, which were distributed in Yunnan and be- longed to three tribes and ten gerena. The results showed that most species contained 20-hydroxyecdysone in trace, so it did not have any chemotaxonomic importance to Family Commeliaceae. The dynamic variation of 20-hydroxyecdysone in different collecting places and seasons of C.arachnothea was also analysed. It is noticed that the contcnt variation of 20-hydroxycdysone in both overground and underground parts of the annual planting of C. arachnothea are interrelated with that of the visit by butterflies.