玉米幼苗不同叶位叶片叶绿素含量和荧光参数特性研究

摘要

以玉米幼苗刚好完全展开的1～5叶位叶片为材料,通过检测叶绿素含量和荧光参数特性,研究玉米不同叶位叶片的光化学活性.结果表明:随着叶位的上升,叶绿素含量逐渐增加;与第1,2位叶比,第4,5位叶具有更高的Fv/ Fm和ETo/RC,即第4,5位叶具有更强的光化学活性.%In order to study the photochemical activity of maize leaves at position 1 -5 ,the chlorophyll content and fluorescence characteristic parameters of 1to 5 leaves fully extended in maize seedlings were investigated. The result showed that the chlorophyll content of maize leaves increased with the rise of leaf position. Compared with the leaf 1and 2, the leaf 4 and 5 had higher Fv/Fm and ETo/RC, which showed that the leaf 4 and 5 had stronger photochemical activity.