Estimation of heterosis and inbreeding depression in okra (Abelmoschus esculentus)

AAKANSHA GOSWAMI; B SINGH; ANUBHUTI SHARMA

doi:10.56093/ijas.v85i3.47201

Authors

AAKANSHA GOSWAMI Ph D Scholar, Department of Bioscience & Biotechnology, Banasthali University, Rajasthan
B SINGH Associate Professor, Department of Horticulture, S V P University of Agriculture & Technology, Meerut, Uttar Pradesh
ANUBHUTI SHARMA Assistant Professor, Department of Bioscience & Biotechnology, Banasthali University, Rajasthan. Present Address - Senior Scientist, Division of Biochemistry, VPKAS, Almora

https://doi.org/10.56093/ijas.v85i3.47201

Keywords:

Heterosis, Inbreeding depression, Line Ã— Tester, Okra

Abstract

All parental genotypes of okra [Abelmoschus esculentus (L.) Moench] were sown during the zaid season 2011 at Horticulture Research Centre, Department of Horticulture, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, for developed and maintained for using conventional agronomic practices to keep the crop in good conditions for morphological study. Twenty selected genetically diverse genotypes of okra along with their 51 F1s and 51 F₂s population developed in next season through Line x Tester analysis. This experiment was conducted to study the heterosis and inbreeding depression between various economically important traits of okra for the purpose of genetic improvement and their effect in populations. Inbreeding depression was observed for different characters studied in number of crosses. In this best crosses showed 21 crosses early flowering, 40 crosses tallest plant, 29 crosses maximum number of branches, 21 crosses maximum number of nodes per plant, 21 crosses maximum length of first fruiting node, 34 crosses maximum length of internode, 26 crosses maximum length of fruits, 36 crosses maximum width, 39 crosses maximum number of fruits/plant and 32 crosses maximum yield/plant. According to this better fruit yield cross combination BO 2 x Azad Krishna showed maximum inbreeding depression.

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References

Anonymous. 2009. Indian Horticulture Database. National Horticulture Board, Ministry of Agriculture, Government of India, pp 157–8.

Anonymous. 2012. Indian Horticulture Database. National Horticulture Board, Ministry of Agriculture, Government of India, pp 157.

Anonymous. 2013. Indian Horticulture Database. National Horticulture Board, Ministry of Agriculture, Government of India, pp 167.

Hazem A, Obiadalla-Ali, M H Z Eldekashy and A A Helaly 2013. Combining ability and heterosis studies for yield and its components in some cultivars of okra (Abelmoschus esculentus L. Moench). American-Eurasian Journal of Agriculture & Environmental Science 13 (2): 162–7.

Koundinya A V V, Dhankar S K and Yadav A C. 2013. Genetic variability and divergence in okra [A. esculentus (L) Moench]. Indian Journal of Agricultural Sciences 83 (6): 685–8.

Medagam Thirupathi Reddy, Kadiyala Haribabu, Mutyala Ganesh, Konda Chandrasekhar Reddy 2012. Genetic analysis for yield and its components in okra (Abelmoschus esculentus (L.) Moench). Songklanakarin Journal of Science and Technology, 34 (2): 133–41. DOI: https://doi.org/10.7726/ajast.2012.1001

Moll R H and Robinson H F. 1967. Quantitative genetics investigation of yield of maize. Zuchter 37: 190–9. DOI: https://doi.org/10.1007/BF00329529

Pawar V Y, Poshiya V K and Dhaduk H L. 1999. Heterosis studies in okra [A. esculentus (L) Moench]. GAU Research Journal, 25 (1): 26–31.

Poshiya V K and Shukla P I. 1986. Heterosis studies in okra [A. esculentus (L) Moench]. GAU Research Journal 11(2): 21–5.

Poshiya V Y and Vashi P S. 1995. Heteroblastosis in relation to general and specific combining ability in okra [A. esculentus (L) Moench]. Indian Journal of Agricultural Science 17: 129– 36.

Ramanjinappa V, Arunkumar K H, Ashok H and Shashibhaskar M S. 2011. Genetic variability in okra (abelmoschusesculentusl. moench.). Plant Archives 11(1): 435–7.

Robinson H F. 1966. Quantitative genetics in relation to breeding on the centennial of mendelism. Indian Journal of Genetics 26 A : 171–87.

Robinson H F, Combostock R E and Harvey P H. 1951. Genotypic and phenotypic correlation in corn and their implication in selection. Agronomy Journal 43: 282–7. DOI: https://doi.org/10.2134/agronj1951.00021962004300060007x

Singh B and Singh B. 2003. Combining ability in okra [A. esculentus (L) Moench]. Plant Archives. 3(1) : 133–13.

Singh B, Singh S P, Yadav J R and Kumar R. 2002. Heteroblastosis and inbreeding depression in okra [A. esculentus (L) Moench]. Plant Archives 2(1) : 127–32.

Solankey S S, Shirin Akhtar, Randhir Kumar, Verma R B and Sahajanand K. 2013. Seasonal response of okra (Abelmoschus esculentus L. Moench) genotypes for okra yellow vein mosaic virus incidence. African Journal of Biotechnology. 13(12):1 336–42. DOI:10.5897/AJB2014.13624 DOI: https://doi.org/10.5897/AJB2014.13624

Vachhani J H, Jivani L L, Kachhadia V H, Shekhat H G, Patel M B and Vaghasia P M. 2012. Combining ability for yield and yield components in okra [Abelmoschus esculentus (L.) Moench]. Asian Journal of Horticulture 7(1): 60–4.

Thakar D N, Tikka S B S, Patel K K and Ukani S J. 1981. Analysis of paramenters of variability in okra. Indian Journal of Horticulture 38 : 232–5.

Yadav J R, Kumar R, Singh B and Srivastava J P. 2003. Unmasking heterosis artifact in okra. Progressive Agriculture, 2 (1): 44–8.

Yadav J R, Ram Vilash K, Tiwari S K and Singh B. 2002. Determining selection component in okra [A. esculentus (L) Moench]. Progressive Agriculture, 2 (2): 185–6.