Vol. 11, Issue 4 (2022)

Author(s):
Voruganti SR, Jatinder Singh and Smruthi Jayarajan

Abstract:
Appropriate choice of plant growth regulators and growing media is very essential for the qualitative and quantitative production of fruit crops. Growing media acts as a reservoir of nutrients and allows the gaseous exchange between plant roots and atmosphere. In some seeds like papaya, the germination is slow due to the presence of some inhibitors such as phenolic compounds. Proper seed germination and seedling growth are the most important aspects of successful bumper production. Seeds treated with plant growth regulators and other chemicals before sowing, accelerates germination rate. Growth regulators and growing media are much more helpful in the germination of papaya seeds. Moreover, application of PGR will improve germination rate as well as reduce the germination period and result in early germination. PGR can also promote the synthesis of hydrolysing enzymes particularly amylase, protease, which hydrolyze food and that could be utilized for the growth of an embryo. The present review reveals the effect of different growth regulators and growing media on seed germination in papaya.