Studies on Leaf Formation in Rice Plants : II. The development of leaves in relation to their position on a stem.

[摘要] The change in size and structure of mature leaves and their development were investigated in relation to their position on a stem. The size of successive mature leaves on a stem is generally proportionate to the size of shoot apices at the time of initiation of each leaf primordium (length of a mature leaf corresponds to height, and its width to basal diameter of a shoot apex respectively). Such relationship is attained through the course of leaf development affected by the change in height and basal diameter of the shoot apex. The number of vascular bundles in a mature leaf is also found to be closely related to basal diameter of the shoot apex. It can be concluded from these observations that the size and the structure of a leaf are primarily controlled by the size of the shoot apex from which it initiates.

[学科分类] 农业科学（综合）