Abstract
Some qualitative and quantitative studies of the carotenoid pigments were made with uredospores of Puccinia coronata Corda, uredospores and teleutospores of Stereostratum corticioides (Berk. et Br.) Magnus. The major pigment of all samples is γ-carotene, constituting about 60per cent of total carotenoids, and β-carotene comes next excepting uredospores of the latter species in which only a trace of it is present. Small amounts of flavochrome, cryptoxanthin and lutein are also detected in all the spores examined. The level of each carotenoid of S. corticioides, especially in uredospores, is considerably lower than that of P. coronata. In germinated uredospores of P. coronata which have been kept on the surface of water for 16hrs. at 20°-27°C, the amount of total carotenoids is only about 30per cent of that before germination.
