Nutritional studies of three species of Gloesporium. I. Effect of different sources of carbon and some of their mixtures

Abstract

1. Three species of Glœosporium were isolated from guava, lime and citron twigs. Their behaviour towards the mixture of various compounds of carbon were not similar. 2. G. psidii and G. limetticolum grew significantly better on any combination of galactose, raffinose and sorbitol while G. citricolum supported less growth than on their individual sources. Mannitol alone supported best growth of G. citricolum but it could produce excellent growth of G. psidii when it was mixed with raffinose. 3. Excellent sporulation of G. psidii was observed on a combination of all the four carbon substances, that of G. citricolum on a mixture of raffinose and galactose or sorbitol and galactose. G. limetticolum gave best sporulation on raffinose alone.