【摘要】 在植物系统发育的过程中,大豆叶子的起源为进化型,而从个体上看大豆属植物叶起源均为外起源,即起源于大豆茎端分生组织某一部位的叶原基.叶原基首先进行切向分裂,然后进行各个方向的分裂形成幼叶.由于每种大豆叶的分生组织活动都是有限的,导致了4种大豆叶片大小的差异.野生大豆叶面积最小,半野生大豆叶、半栽培大豆叶、栽培大豆叶面积递次增大.野生大豆叶面积小,其光合作用和蒸腾作用效率低,代表了其较原始的演化程度;而栽培大豆叶面积大,叶柄也较野生大豆叶柄长,表现出很强的光合作用的功能,代表了较高级的叶结构演化水平.更多还原

【Abstract】 During the phylogenetic development of plants, the origination of soybean leaves is evolutional,but it is exogenous origin in individual development, namely orginated from leaf primordium of meristem on shoot apex of soybean.The leaf primordium divides tangentially, then divides in various directions, and forms a young leaf. The limit activity of meristem different types of soybean leaves results in the difference size of leaves, i.e. the Glycine soja is the smallest→semi-wild→semi -cultured →Glycine max the largest .The leaves of the Glycine soja is smaller , the efficiency of photosynthesis and transpiration is lower, representing its more original evolvemental degree, and that the leaves of the Glycine max is larger with longer petiole than the Glycine soja, the efficiency of photosynthesis and transpiration is higher, representing its more advanced evolvemental degree.更多还原