Multivariate analysis and variability studies of ginger genotypes in Terai region of West Bengal

Abstract

The investigation was done in experimental farm in Uttar Banga Agricultural University to evaluate the genetic diversity, characterization and suitability of growing ginger genotypes in the terai region of West Bengal. Characterization of 18 genotypes was done according to DUS descriptors as per IISR (Indian Institute of Spices Research) and grouped them according to their qualitative and quantitative characters. From the evaluation it was found that SG-2640, SE-8681 and ACC-247 gave very high yield than the yield of national check VARADA.GCP-39, SEHP-9, SE-8640, SG-2640, SE-8681 and ACC-247 gave very high yield than the yield of local check GCP-5 (Garubathan). GCP-39 has maximum number of shoots and leaf width. ACC-247 has maximum rhizome thickness and yield. Principal Component Analysis has found to have Eigen values where major positive association with plant height (0.39), shoot length (0.41), number of leaves (0.39), leaf length, (0.39), number of shoots (0.41) and leaf width (0.30). PC2 has major positive association with rhizome thickness (0.683) and rhizome yield (0.402). So rhizome thickness is considered to be one of important characters for evaluation of rhizome yield. From the investigation, SG-2640, SE-8681 and ACC-47 were found to be greater in yield in both local and national check varieties and best suited genotypes for cultivation in this region of West Bengal.