1Department of Vegetable Science, Tamil Nadu Agricultural University, Coimbatore-641 003, Tamil Nadu, India
2Department of Horticulture, Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore-641 003, Tamil Nadu, India
3Department of Medicinal and Aromatic Crops, Tamil Nadu Agricultural University, Coimbatore-641 003, Tamil Nadu, India
4Department of Plant Biotechnology, Tamil Nadu Agricultural University, Coimbatore-641 003, Tamil Nadu, India
5Department of Plant Biochemisty, Tamil Nadu Agricultural University, Coimbatore-641 003, Tamil Nadu, India
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.
The present study was conducted at College Orchard on clay loam soil in the years 2022-2023 at the Department o Vegetable Science, Horticultural College and Research Institute, TNAU, Coimbatore. The experimental orchard site at HC and R is located in the tropical plain topography at 11 degrees north latitude, 77 degrees east longitude and 411 metres above mean sei level (MSL). There are 20 genotypes of turkey berry for variability, heritability and genetic advance study. These genotypes ar collected from different areas of Tamil Nadu and other Indian states. One season measurements have been taken of the followini traits: plant height, internodal length, number of branches per plant, stem girth, number of stem prickles, number of leaves, lea area cm2, number of leaf prickles per plant, days of first flowering, number of flowers/clusters, number of flowers per plant, numbe 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 thi observations.
The results from this study revealed that higher values of PCV, GCV, heritability and GAM are indicative of a greater influenci of environmental factors, according to variability studies. These data demonstrated that there was a high level of variability for thesi traits in the germplasm and that selection for these traits might be successful. These data were combined with high estimates o genetic advance for traits like the number of leaf prickles per plant, number of flowers per cluster, fruit diameter, number of fruits pe cluster, leaf area, stem girth, number of stem prickles per plant and internodal length. The promising accessions discovered in thi: study could be applied to projects aimed at improving crops, such as pre-breeding for turkey berries.
Genetic advance, Heritability, Turkey berry, Variability
