Performance and Genetic Variability Studies in Okra [Abelmoschus esculentus (L.) Moench]
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Date
2020-07-16
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Agriculture University, Jodhpur
Abstract
An experiment entitled “Performance and genetic variability studies in okra
(Abelmoschus esculentus (L.) Moench)” was carried out during August 2019 to
November 2019 at the Instructional Farm, College of Agriculture, Jodhpur
(Rajasthan). The experiment comprised of 12 varieties and hybrids of okra viz. „P-8‟,
„Pusa Bhindi-5‟, „Samrat F1 Hybrid‟, „Punjab Suhawani‟, „Arka Nikita‟, „Shakshi F1
Hybrid‟, „Palam Komal‟, „Kashi Kranti‟, „Shakti F1 Hybrid‟, „Arka Anamika‟, „Kashi
Pragati‟ and „Laxmi F1 Hybrid‟ and was laid out in Randomized Block Design with
three replications.
Significant differences were found amongst the varieties and hybrids of okra
for the studied characters. The „Arka Anamika‟ recorded the maximum number of
branches per plant (2.80), stem diameter (17.10 mm), number of leaves per plant
(69.06), number of fruit per plant (25.80), fruit yield per plant (369.78), fruit yield per
plot (4.95 kg) and estimated fruit yield per hectare (122.23 q). The „Palam Komal‟
recorded the maximum plant height (139.73 cm) and numbers of nodes on main stem
(30.80) while „Laxmi F1 Hybrid‟ produced the largest leaves (156.86 cm2
). The
earliest first flower anthesis (39.67 DAS) and 50% flowering (39.33 DAS) and first
picking (45.40 DAS) were recorded in „Kashi Pragati‟, whereas the maximum fruit
length was recorded in „Pusa Bhindi-5‟ (12.36 cm). The „Samrat F1 Hybrid‟ recorded
the maximum fruit diameter (16.02 mm) and fruit weight (12.99 g) while the longest
shelf life of fruit was obtained in „Kashi Kranti‟ (4.47 Days). Fruits of all the varieties
and hybrids were dark green in colour with hairy appearance and five ridges except
„Arka Anamika‟ which produced green colour fruits.
Analysis of variance exhibited significant differences for all the characters
which shoed the presence of abundant inherent genetic variation among the
genotypes. The phenotypic coefficients of variation were higher than the respective
genotypic coefficients of variation for all the characters under study. High estimates
of heritability were observed for leaf area followed by days taken to first anthesis,
fruit yield per hectare, fruit yield per plot, stem diameter, days taken to first picking,
shelf life of fruit, fruit yield per plant, days taken to 50% flowering and number of
fruits per plant. Genetic advance as percent of mean (genetic gain) ranged from
29.44 % for yield per hectare to 5.78 % for fruit length. High genetic advance was
recorded for fruit yield per plant, fruit yield per hectare and leaf area.
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Meena Manish Kumar 2020. Performance and Genetic Variability Studies in Okra [Abelmoschus esculentus (L.) Moench. M.Sc. thesis, College of Agriculture, Agriculture University, Jodhpur.