Central Plantation Crops Research Institute, Kasaragod 671 124, Kerala
*Corresponding author's present address: Director, Indian Institute of Spices Research, Calicut 673 012. E-mail: parthasarathy@iisr.org
Eleven isozyme systems viz., EST, PRX, PPO, MDH, ACP, ADH, GOT, a-AMY, PHOS, G-6PDH, SOD and PROT were used to study the interpopulation variation among 30 different coconut cultivars and hybrids. The rare alleles found in these populations may have an important role as genetic markers in coconut breeding programme. Genotypes AGT and SLT showed highest mean allelic frequency, while KTOD showed the least value. Among the isozymes and proteins studied, G-6PDH and ACP showed highest mean allelic frequency and ADH showed the least value. Out of the 11 isozyme systems, highest polymorphism was shown by PPO followed by PRX, ADH, MDH, SOD. EST, a-AMY, GOT, PHOS, GSPDH and ACP, respectively.
Coconut, isozyme, polymorphism, protein
