EVALUATION OF PROMISING BLACK TURMERIC (Curcuma caesia ROXB.) GENOTYPES FOR GROWTH, YIELD, QUALITY AND ANTIBACTERIAL PROPERTIES
Loading...
Date
2022-01-19
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of Agricultural Sciences, Bangalore
Abstract
Eight promising black turmeric genotypes were studied for growth, yield, quality and antibacterial properties. Considerable variation was observed for all the DUS descriptors. Out of 25 characters studied, four were monomorphic, thirteen were dimorphic and eight were polymorphic characters. The growth parameters like days taken for field sprouting, plant height, number of leaves, number of shoots, leaf lamina length, leaf lamina width, leaf petiole length, plant diameter and leaf area was recorded periodically. The yield parameters like mother rhizome, primary rhizome and secondary rhizome characters, fresh rhizome yield and quality parameters such as dry recovery percentage, cured rhizome yield and biochemical profiling of methanolic rhizome extracts were studied. The findings of the study indicated that among eight genotypes, the genotype GKJ-5 recorded significantly superior values for plant height (123.07 cm), number of leaves (38.20), number of shoots (7.46), leaf lamina length (17.72 cm), lamina
width (49.40 cm), leaf petiole length (28.24 cm), plant diameter (16.98 cm), leaf area (6434.17 cm2), fresh rhizome yield (48.07 t/ha) and cured rhizome yield (9.85 t/ha) followed by genotypes GKB-3 & GKM-2 for growth, yield and quality parameters. Three genotypes out of eight such as GKM-2, GKB-3 & GKJ-5 were noted as adaptable genotypes to local condition. Biochemical profiling of methanolic rhizome extract confirmed intraspecific diversity in the chemical composition of genotypes with respect to the geographical distribution. The antibacterial activity for selected bacteria was also studied. The extracts exhibited positive results against the clinically important selected Gram positive bacteria.