Abstract
Background: Breeders can determine the likelihood of passing on advantageous traits to the following generation by using heritability, which calculates the portion of phenotypic variation that can be attributed to genetic factors. Methods: The present study was conducted at College Orchard on clay loam soil in the years 2022-2023 at the Department of Vegetable Science, Horticultural College and Research Institute, TNAU, Coimbatore. The experimental orchard site at HCandRI is located in the tropical plain topography at 11 degrees north latitude, 77 degrees east longitude and 411 metres above mean sea level (MSL). There are 20 genotypes of turkey berry for variability, heritability and genetic advance study. These genotypes are collected from different areas of Tamil Nadu and other Indian states. One season measurements have been taken of the following traits: plant height, internodal length, number of branches per plant, stem girth, number of stem prickles, number of leaves, leaf area cm2, number of leaf prickles per plant, days of first flowering, number of flowers/clusters, number of flowers per plant, number of fruits/clusters, the number of fruit clusters per plant, fruit diameter, the individual fruit weight and the fresh fruit yield (gm/plant). As part of the current study, five randomly chosen plants from each genotype in each replication were tagged to record the observations. Result: The results from this study revealed that higher values of PCV, GCV, heritability and GAM are indicative of a greater influence of environmental factors, according to variability studies. These data demonstrated that there was a high level of variability for these traits in the germplasm and that selection for these traits might be successful. These data were combined with high estimates of genetic advance for traits like the number of leaf prickles per plant, number of flowers per cluster, fruit diameter, number of fruits per cluster, leaf area, stem girth, number of stem prickles per plant and internodal length. The promising accessions discovered in this study could be applied to projects aimed at improving crops, such as pre-breeding for turkey berries.
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