Genetic variability, correlation and path analysis studies in okra (Abelmoschus esculentus (L.) Monech)
Among various factors, selection of suitable variety(s) plays an important role in enhancing the fruit yield as well as productivity in okra. In order to improve the fruit yield through selection, information on nature and magnitude of variability present in a population is one of the most important pre-requisite factor for crop breeding programme. The present investigation on genetic variability, correlation and path analysis studies in okra conducted at AICRP on Vegetable Improvement Project of Orissa University of Agriculture and Technology, Bhubaneswar, Odisha, India. Thirty-three genotypes including four national check varieties were evaluated by adopting RBD with three replications. The results revealed wide variability among the different traits in okra. Invariably, higher values were observed for PCV with respect to corresponding GCV denoting the impact of environmental factors towards expression to certain extent. Due to presence of moderate to high heritability coupled with moderate genetic advance as % of mean for no. of disease infested plant, fruit weight, days to 50% flowering, fruits plant-1 as well as fruit yield plant-1 denoting their possibility of improvement with simple selection in okra. Similarly, highly significant and positive correlation of fruit yield plant-1 with plant height, nodes plant-1 and fruits plant-1 was observed. Results on path analysis study revealed selection of high fruit yield plant-1 should be based on traits such as days to first flowering, duration of fruiting, fruit weight and nodes plant-1 in okra.
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