ABSTRACT
Custard apple is a delicious and important minor fruit crop cultivated in tropical and sub-tropical climate. It comes under the family “Annonaceae” and its native is West Indies. In custard apple, promising results due to the exogenous application of growth regulators have been reported. Growth regulators have been used to increase flowering, fruit set and fruit retention, yield and improve the quality of custard apple. Propagation of Annona species is usually done by grafting or budding with selected scions on to seedling rootstocks. Seedling rootstocks are highly variable in vigor and disease resistance and consequently scion growth and productivity are also variable. Seed germination of custard apple is uneven and irregular making sexual propagation difficult. Much experimental evidences support the concepts that specific endogenous growth promoting and inhibiting compounds are involved directly in the control of seed development, dormancy and germination. Custard apple seeds require 35-50 days for potential germination.
