Purple passionfruit plants were grown at , and . Shoot growth was maximum at owing to the increased lateral growth. At , no laterals developed and some flowers were newly formed. High temperature accelerated flower development. Fruit set increased with the decrease in temperature. Fruit matured very rapidly and the juice content was highest at . The values for fruit weight and juice content were lowest at . Sugar content in the juice was highest at and lowest at . Sucrose accumulated more at , while the glucose and fructose contents increased at higher temperatures.
These results indicate that relatively low temperatures are suitable for flowering and fruit set, and moderately high temperatures are favorable for fruit growth and quality in purple passionfruit.