Discriminating geographical origins of Indian jackfruit (Artocarpus heterophyllus Lam.) through multivariate analysis of physico-chemical characters

Abstract

Seventy jackfruit accessions collected from seven prominent regions of India viz. North 24 Parganas (West Bengal), Nadia (West Bengal), West Tripura (Tripura), Khowai (Tripura), Panruti (Tamil Nadu), Varkala (Kerala) and South Sikkim (Sikkim) were assessed for physico-chemical characteristics to ascertain the linkage between the quality characteristics and their geographical locations. The samples were collected on a yearly basis, between May to June of 2016 and 2017. Principal component analysis (PCA) and linear discriminant analysis (LDA) were applied to discriminate geographical origin of the accessions. Based on PCA, accessions from Panruti could be distinguished with high amount of TSS, total sugar, fruit length and fruit weight and moderate values of number of flake, flake weight, pulp weight, seed weight and fruit width followed by accessions from Varkala, Nadia and Khowai with all moderate values. Linear discriminant analysis (LDA) revealed that, accessions of Panruti could be distinguished even at ninety five percent confidence level.