There is increasing concern about the fruit growth, development and quality of wax apple (Syzygium samarangense), a widely cultivated fruit tree in South East Asia. The growth and development of this fruit is sometimes very low due to low photosynthates supply at early growth stages. Growth regulators, hydrogen peroxide and phloemic stress are important tools to improve the growth, development and quality of horticultural products. The extracts of wax fruits, flower and bark have potent free radical scavenging, antioxidation, antimutation and anticancer activities.

Salinity stress limits crop yield affecting plant growth and restricting the use of land. As world population is increasing at alarming rate, agricultural land is shrinking due to industrialization and/or habitat use. Hence, there is a need to utilize salt affected land to meet the food requirement. Although some success has been achieved through conventional breeding but its use is limited due to reproductive barrier and scarcity of genetic variations among major crops.