Plastidial Ultrastructure in Variegated Plants of Weigelia Florida DC.

SUMMARY

Leaves of two varieties of Weigelia florida DC., the one with green leaves and the other with variegated leaves, showing green center and white-yellowish margin, have been studied by light and electron microscope. From light microscope observations, the variegated variety of Weigelia florida DC., seems to be a periclinal chimaera of green-white-green type. The epidermis of the variegated leaves appears to be both phenotypically and genotypically « green », whereas the epidermis of the green leaves does not contain developed plastids. In the variegated leaves, the plastids of cells, originated from L II layer, show great alterations.