黄顶菊幼苗不同叶位叶片显微结构和羧化酶活性研究  

Microstructure and Carboxylase Activity of Different Position Leaves in Flaveria Bidentis Seedlings

作　　者：朱延姝[1] 白春梦 崔震海[1] 樊金娟[1] 阮燕晔[1] 张立军[1] 

机构地区：[1]沈阳农业大学生物科学技术学院,辽宁沈阳110866

出　　处：《西南农业学报》2014年第1期303-306,共4页Southwest China Journal of Agricultural Sciences

基　　金：国家自然科学基金项目(31201141;31000673);教育部博士点基金项目(20102103110001;20102103120001);沈阳市科技计划项目(F11-264-1-28)

摘　　要：以黄顶菊幼苗刚好完全展开的第1～5位叶片为试验材料,研究叶片显微结构、羧化酶活性变化规律,探讨黄顶菊不同叶位叶片的光合碳同化特性.结果表明：黄顶菊第1～5位叶均具有花环结构,PEPC/Rubisco活力比值均大于1,但随着叶位的上升,维管束鞘细胞和叶肉细胞内的叶绿体含量逐渐增多,花环结构逐渐完善,PEPC/Rubisco活力比值也逐渐增大,表明黄顶菊不同叶位叶片均运行C4光合途径,但随着叶位的上升C4光合能力逐渐增强.Flaveria Bidentis leaves at position 1-5 were taken as materials to study the characteristics of carbon assimilation of different leaf position of F.bidentis.The results showed that：there were kranz anatomy in F.bidentis leaves at position 1-5 and the specific value of PEPC/Rubisco were greater than 1,but the chloroplast content in BSC and MC increased with degrees.The kranz structure was more completive and the specific value of PEPC/Rubisco gradually increased with the rice of leaf position.The conclusion was drawn that F.bidentis leaves at position 1-5 run C4 photosynthesis pathway,but photosynthetic capacity enhanced gradually with the rise of leaf position.

关 键 词：黄顶菊 叶位 花环结构 羧化酶活性 

分 类 号：S682.11[农业科学—观赏园艺]