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HETEROSIS AND COMBINING ABILITY FOR YIELD AND ITS COMPONENTS IN OKRA [Abelmoschus esculentus (L.) Moench]

KrishiKosh

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Title HETEROSIS AND COMBINING ABILITY FOR YIELD AND ITS COMPONENTS IN OKRA [Abelmoschus esculentus (L.) Moench]
 
Creator SHASHI KUMAR
 
Contributor Dr. M. THIRUPATHI REDDY
 
Subject low productivity,susceptibility,vein mosaic virus,high productivity potential
 
Description Current cultivars of okra (Abelmoschus esculentus (L.) Moench) are of low productivity and sub-optimal fruit quality with susceptibility to yellow vein mosaic virus (YVMV). The development and release of advanced varieties with high productivity potential, resistance to YVMV and superior fruit quality is the engine of market demand. In view of the above, the present investigation was carried out to study the heterotic patterns, combining ability effects and genetic system governing yield and yield associated traits so as to identify the promising F1 hybrids for commercial exploitation. Six nearly homozygous, optimally divergent, horticulturally superior and YVMV resistant lines of okra (RNOYR14, RNOYR-15, RNOYR-16, RNOYR-17, RNOYR-18 and RNOYR-24) selected from the genetic stocks available at the Vegetable Research Station, Dr. Y. S. R. Horticultural University (Dr. YSRHU), Rajendranagar, were crossed in half-diallel fashion during kharif 2012, resulting in the development of 15 oneway single cross F1 hybrids. A set of twenty four entries involving fifteen F1 hybrids along with their six parental lines and three standard checks [‘No. 64’ (Mahyco), ‘Avantika’ (Bioseed) and ‘Shakti’ (Nunhems)] were evaluated by raising each entry in a double-row plot of 3.0 m length and 0.60 m width at a spacing of 60×30 cm in a randomized block design with three replications at the Experimental Farm, Vegetable Research Station, Rajendranagar during summer 2013 for seventeen biometric characters viz., plant height (cm), number of branches per plant, internodal length (cm), days to fifty per cent flowering, first flowering node, first fruiting node, fruit length (cm), fruit width (cm), fruit weight (g), total number of fruits per plant, number of marketable fruits per plant, total yield per plant (g), marketable yield per plant (g), fruit and shoot borer infestation (FSB) on fruits and shoots (%) and yellow vein mosaic virus infestation on fruits and plants (%).
Analysis of variance revealed that there were significant differences (P
 
Date 2016-07-25T09:55:58Z
2016-07-25T09:55:58Z
2013-06
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/69641
 
Language en
 
Format application/pdf
 
Publisher Dr. Y. S. R. HORTICULTURAL UNIVERSITY