Incidence of powdery mildew in mango panicles and biochemical changes.
Om Prakash, Kalra S. K., Tandon D. K., Raoof M. A.
Author Affiliation: Central Institute of Horticulture for Northern Plains, Lucknow 226?016, India.
Indian Phytopathology 42 : 185-186
Abstract : The status of metabolites of Dashehari mango panicles infected by Oidium mangiferae were determined at stage I (c. 10% infection), Stage II (c. 50% infection) and stage III (c. 100% infection). A decrease in moisture content was recorded in infected panicles in the 3 stages of disease severity. There was an increase in pH and a fall in acidity during the development of panicles and the severity of infection, due to consumption of organic acids by the fungus. Total soluble solids were lower in infected panicles in the initial disease stages. Reducing sugars were lower in diseased panicles only in stages I and II. Tannin content decreased at stage I and increased as infection became severe. Protein content generally decreased with the growth of healthy inflorescences and was slightly higher in infected panicles.