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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2018: 95.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
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Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(9): 1851-1862
DOI: https://doi.org/10.20546/ijcmas.2018.709.225


Heterosis Studies in Okra (Abelmoschus esculentus L. Moench)
Prakash Kerure1* and M. Pitchaimuthu2
1ICAR-Krishi Vigyan Kendra, Chitradurga-577 598, Karnataka, India
2ICAR-Indian Institute of Horticultural Research, Bengaluru-560 089, Karnataka, India
*Corresponding author
Abstract:

Heterosis is manifested through greater vigour of F1 over their parents resulting into higher yields through their component characters and the study of heterosis would help in selection of heterotic crosses for commercial exploitation of F1 hybrids in okra (Abelmoschus esculentus (L.) Moench). Forty five F1s were developed by crossing 10 elite lines of okra in half diallel fashion during summer 2016. All 45 F1s along with their 10 parents and one standard control (Nunhems hybrid Shakti) were evaluated in a randomized complete block design with three replicates during late kharif (July to October) 2016 at ICAR- Krishi Vigyan Kendra, Babbur Farm, Hiriyur, Chitradurga, Karnataka. The magnitude of heterosis varied from cross to cross for all the characters studied. The variance due to parents verses hybrids was highly significant (P=0.01) for plant height, number of branches per plant, first fruit producing node, fruit length, average fruit weight, number of fruits per plant and yield per plant. The results revealed wide range of heterotic pattern for different traits. For first fruit producing node, heterosis over better parent and standard control ranged from -25.44 to 54.32 and -9.03 to 43.32 respectively. For days to 50% flowering, heterosis over better parent and standard control ranged from -8.03 to 3.79 and -8.70 to 0.72 respectively and for total yield per plant, heterosis over better parent and standard control ranged from -32.66 to 83.78 and -0.13 to 168.55 respectively. Out of 45 F1s, 44 F1s crosses exhibit significant standard heterosis in any given direction for total yield per plant except cross IIHR-604 x IIHR-107 (-0.13%). The maximum positive significant heterosis was observed in cross IIHR-875 x IIHR-478 (83.78%) over better parent and (168.55%) over standard parent may be exploited for commercial cultivation.


Keywords: Abelmoschus esculentus, Heterosis, Half diallel, Fruit yield
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How to cite this article:

Prakash Kerure and Pitchaimuthu, M. 2018. Heterosis Studies in Okra (Abelmoschus esculentus L. Moench).Int.J.Curr.Microbiol.App.Sci. 7(9): 1851-1862. doi: https://doi.org/10.20546/ijcmas.2018.709.225