National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
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.
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