Heterosis for seed yield in pea was also reported by singh and santhoshi 1989. Heterosis in okra pdf in our study, 24 hybrids obtained by diallel cross between ecotypes of okra were subjected to analysis of their combining ability effects and hybrid vigor. Tall plant with shorter internodes plays an important role in increasing the yield as fruiting takes place at each node. Okra is being an often crosspollinated crop, responds well to heterosis breeding. Download adobe acrobat reader free software to read pdf files. Shull, while working as a corn geneticist at the cold spring harbor laboratory from 1904 to 1915. Pdf the present investigation on line x tester analysis was conducted in okra to study the magnitude of heterosis for thirteen plant traits. Combining ability effects were estimated for 8 characters viz.
Heterosis in okra has been reported for various economic traits, viz. Moench was carried out with six lines and three testers, to estimate the heterosis for ten characters. High heterosis values can be obtained using hybrid okra seeds. Heterosis is prevalent for multiple traits in diverse maize germplasm sherry a. Pdf combining ability and heterosis for yield and its. Heterosis studies in okra abelmoschus esculentus l. Pdf heterosis and combining ability for yield traits in. Materials and methods the investigation on heterosis and combining ability studies in okra. Heterosis and nature of gene action in okra abelmoschus. Relative heterosis mid parent heterosis, average heterosis.
Studies on heterosis in okra abelmoschus esculentus l moench. It is the choicest fruit vegetable grown extensively in the tropical. Line x tester analysis for heterosis in okra abelmoschus. Studies on the combining ability and heterosis in okra. Hybrid okra seeds have heterosis values that can rapidly increase productivity, improve the quality of okra as a food, and so on 7. Heterosis combining ability and stability analysis in okra. Pick the okra every 1 to 2 days or yields will decrease fig. The semi okra hybrid showed 712% heterosis over the check hybrid in lint percent. Pdf heterosis in okra hybrids obtained by hybridization. General combining ability, specific combining ability, gene action, earliness, yield, okra introduction okra abelmoschus esculentus l. Pdf the present investigation was undertaken with the objective of identifying the high yielding parents and f1 hybrids through line x tester. Okra poses no threat to the organism, causes no addiction.
The presence of variations among four lines of okra and their hybrids for various. The present study was undertaken to elicit information on the nature of combining ability variance, effects, gene action and heterosis through diallel analysis including reciprocals. Okra can be stored for 3 to 5 days in the refrigerator. Moench thirupathi reddy medagam1, haribabu kadiyala2, ganesh mutyala3, and begum hameedunnisa1 the study of heterosis would help in selection of heterotic crosses for commercial exploitation of f 1 hybrids in okra abelmoschus esculentus l. Diallel analysis for combining ability studies in okra. Heterosis for yield and yield components in okra abelmoschus. Estimation of hybrid vigour for fruit yield and quality traits of okra. Heterosis, heterobeltiosis, line x tester mating design, okra how to cite this paper. Heterosis is prevalent for multiple traits in diverse. There has been no work done to explore its potentiality as a possible source of bast fibre. Heterosis in okra pdf in our study, 24 hybrids obtained by diallel cross between ecotypes of okra were subjected to analysis of their combining ability effects and hybrid vigor skip to content chamber of thrills. Moench is commonly known asbhendi or ladys finger in india.
Okra is one of the important vegetables grown in india during both summer and rainy seasons. Tall plant with shorter internodes plays an important role in increasing the. Heterosis and combining ability in okra abelmoschus. Pdf heterosis study in okra abelmoschus esculentus l. Heterosis can be defined as the superiority of f 1 hybrid over both the parents in terms of yield. Amaryl lids to download pdf you need some things, like my website and the name of the file. Hence an investigation was carried out with an objective of assessing the magnitude of heterosis and combining ability for yield and quality parameters in okra. If the okra gets too large, it will be tough and stringy. One hundred and twenty hybrids of okra abelmoschus esculentus l. However, despite high heterotic values, it is very difficult to produce hybrid okra seeds. Heterosis in okra hybrids obtained by hybridization of two methods. Heterosis for yield and yield components in okra abelmoschus esculentus l.
This increased productivity or superiority over the parents is known as heterosis or hybrid vigour. Save nature to survive heterosis and combining ability. Pdf combining ability and nature of gene action in okra. A line x tester analysis in okra abelmoschus esculentus l.
Moench developed from forty double cross derived lines female and three testers male were studied for heterosis of. Heterosis in okra pdf in our study, 24 hybrids obtained by diallel cross between ecotypes of okra were subjected to analysis of their combining ability effects and. Heterosis combining ability and stability analysis in okra abelmoschus esculentus l. The heterosis over better parent for yield per plant was mainly due to longer and thicker fruits coupled with more number of fruits per plant. Moench is a fast growing annual which has captured a prominent position among the vegetables and is commonly known as bhendi or ladys finger in india. Heterosis and combining ability studies in okra abelmoschus esculentus l. Combining ability for yield and yield components through. As the lai increases, the semi okra and sub okra hybrids showed certain heterosis. Line x tester analysis for heterosis in okra abelmoschus esculentus l. Fiber okra contains is a valuable nutrient for intestine microorganisms.
Heterosis for plant height in okra was also reported by singh and syamal 2 006, shoba and mariappan 2 007. Moench thirupathi reddy medagam1, haribabu kadiyala2, ganesh mutyala3, and begum hameedunnisa1 the study of heterosis would help in selection of heterotic crosses for commercial exploitation of f 1 hybrids in okra. Thus, this experiment is first of its kind on finding out the potentiality of okra as an additional source of bast fibre and heterosis and combining ability for fibre yield. Heterosis in yield, fiber quality, and photosynthesis of. Combining ability and heterosis for yield and its contributing characters in okra abelmoschus esculantus l. Heterosis is one of the greatest practical achievements of plant breeding and has been extensively used. Pdf heterosis for yield and yield components in okra. Computation of heterosis and recombination loss heterosis and recombination loss computation are directly derived from. All the characters studied indicated the scope for heterosis breeding in crop improvement in okra. Evaluation for heterosis in okra abelmoschus esculentus l.
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