Characterization of black turmeric genotypes based on DUS descriptor (Curcuma caesiaRoxb.)

Abstract

In accordance with the DUS multiscale scoring standards, a study was conducted at Farmer’s Field in Vadapalani village of Erode district, Tamil Nadu to characterize twenty black turmeric genotypes for sixteen characters. Three of the examined characteristics viz., Leaf color (ventral side), Leaf margin, and Number of mother rhizome were found monomorphic. Seven characteristics were dimorphic and six were polymorphic. Tall plants with lengthy petioles, lamina lengths, and broad leaves were regarded as a plant morphological trait for choosing the best genotype (BTG 6, BTG 11, BTG 12, BTG 15, BTG 16, BTG 17, BTG 19) that are adaptable to local conditions. Black turmeric rhizome variations in inner core color have drawn attention. The inner core of the rhizome’s greenish-blue color can be used to identify the genotype BTG3. Earliness can be a sign for genotypes BTG6, BTG11, BTG15, and BTG19 because they were shown to have short-duration types with less than 210 days. The differences seen with DUS characters provide a clear window for selection based on desired morphological characteristics that may be used for selecting individuals based on particular traits.