Abstract
Nine commercial cultivars of okra were evaluated for a number of agro-botanical traits. The analysis of variance for all the traits showed highly significant variations among the genotypes. The phenotypic coefficient of variation (PCV) was found higher than the genotypic coefficient of variation (GCV) for all characters. Maximum GCV and PCV were observed for branches/plant (42.54 and 42.60) and leaves/plant (27.93 and 27.99) respectively. Heritability as well as genetic advance was found maximum for branches/plant recorded as 99.72 and 87.50 respectively. Based on D2 statistics 9 genotypes were grouped into 4 clusters, namely cluster I, II, III and IV. Highest inter-cluster distance (1.18) was observed between cluster II and cluster IV. The genotypes of cluster IV possessed heterogeneous nature and showed highest intra-cluster distance (0.65). Titanic-1, BARI Derosh-1 and Green Finger genotypes were found superior to the rest of the genotypes due to their highest cluster mean for yield/plant (955.8g), plant height (208cm), leaves/plant (60.8) and fruits/plant (31.4). These information could be useful in recombination breeding programme.Jahangirnagar University J. Biol. Sci. 3(2): 25-32, 2014 (December)
Highlights
Maximum genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) were observed for branches/plant (42.54 and 42.60) and leaves/plant (27.93 and 27.99) respectively
Based on D2 statistics 9 genotypes were grouped into 4 clusters, namely cluster I, II, III and IV
Okra (Abelmoschus esculentus (L.) Moench) commonly known as lady’s finger is a perennial flowering plant belonging to Malvaceae
Summary
Okra (Abelmoschus esculentus (L.) Moench) commonly known as lady’s finger is a perennial flowering plant belonging to Malvaceae. It is extensively grown in temperate, subtropical and tropical regions of the world, including Indian sub-continent and East Asia (Rashid, 1990). In Bangladesh, it is known as Derosh that provides an important source of vitamins, calcium, potassium and other mineral matters (Lamont, 1999). This nutritious fruit plays an important role to meet the demand of vegetables in the country. The present investigation was undertaken to evaluate the genetic variability of different characters in nine okra genotypes to select suitable parents for improved breeding programme
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