Radiation Studies in Lens culinaris: Ultrastructure of Chloroplast in the Leaves of the Normal and Mutated Plants

抄録

Leaves of a mutant plant (whitish yellow in colour) were studied with electron microscope. The ultrastructure of the plastids of the chlorophyll mutants showed deformed or degenerated grana with disintegration of stroma lamellae. This may be attributed to the changes in the nature of the gene, controlling the development of the chloroplast. Such an abnormality may be caused by genetic blocking of the production of some enzyme controlling the development of the lamellar system. Complete degeneration of the lamellar system follows. Vesicles present in the chloroplast may be the out come of lamellar disintegration. In lentil the very rare occurrence of xantha or albina mutants may be due to more than one gene responsible for controlling the development of the ultrastructures of plastids.