STANDARDIZATION OF MALFORMIN BIOASSAYS AND RELATIONSHIP BETWEEN MALFORMATION INTENSITY AND MALFORMIN ACTIVITY IN MANGO
Healthy panicles and shoots of mango did not show any malformin activity when assayed by corn, pea and wheat root bioassays. However, crude malformins were isolated by solvent partitioning and column chromatography from malformed mango panicles and shoots. Data indicated a positive and strong correlation between malformation intensity and malformin activity. Some of the malformin-like substance(s) appear to be common in vegetative and floral malformed tissues but vegetative malformed tissues possessed additional malformins. It is suggested that vegetative malformation of the panicle or shoot is a severe form of floral malformation and both floral and vegetative malformation are caused by similar group of compounds having different chemical configurations.