Changes in the levels of common endogenous polyamines in the pericarp and seeds of mango fruits during development

Levels of common free polyamines in pericarp and seeds of developing fruits of mango cv. Alphonso were analyzed to examine their relationship with fruit growth and development. Putrescine was the major polyamine in fruit pericarp and spermine in the seed. The levels of total polyamines and individual polyamines, putrescine and spermine increased in the pericarp and were highest at 45 and 30 days during the years 2000 and 2001, respectively. In seeds, total polyamines, spermine and spermidine levels were high at 90 and 75 days after fruit set during the same years. The high polyamine concentration in fruit preceded its active growth phase and in case of seed it coincided with the active growth phase.