Genetic Studies on Hassawi Okra

(Maha Lutfi Hadid )

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Abstract

The research was carried out at the Research and Training Station, King Faisal University, during the 2019-2020 seasons to determine the combining ability and some genetic parameters of 12 traits. Three genotypes of okra were used: The local Al-Hasawi, the introduced Taiwanese (South sea), and Turkish Kucuk ciftlik. A 3x3 half diallel cross to produce three hybrids tested in randomized complete blocks design with three replications. Parents' evaluation demonstrated that variability existed within all measured traits. The GCA, SCA variances were significant where most studied character reflected the importance of additive and dominance gene actions in the inheritance of these characters. The σ2GCA/σ2SCA ratio was more than unit, the degree of dominance was less than unity. The heritability was high in broad and narrow sense for plants height, number of days to flowering and maturity, weight of a pod, length of a pod number of ribs, and thorns, indicating the predominance of additive gene action. Local cultivar was the best general combiners for production traits, and the introduced varieties were good combiners for early flowering and maturity, in addition to producing a smaller number of thorns. Furthermore, several positive SCA effects were detected. The Single Hybrid (Hasawi x Taiwanese) was the best in earliness and productivity.

KEYWORDS
Additive, combining ability, dominance, heritability

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References

Abu Jaysh, M., Muela, M. and Buras, M. (2005). Alkhasayis albiulujiat walsaghat alzaahiriat walkamiyat lisalalat muntakhabat min eashayir albamia alhuranii 'Biological characteristics, phenotypic and quantitative phenotypes of selected strains of Okra Al-Hourani clans'. Majalat Jamieatan Tashrina, 27(2), 55–65. [in Arabic]. 
Al-Kargholi, A.A. and Khader, A.A. (2016). Hijn fardiatan min albamia lilzaraeat almahmiat bialtadrib altabadulii alkamil wataqdir bed almaealim alwarathiati 'Individual hybrids of Okra for protected cultivation by full cross-multiplication and estimation of some hereditary landmarks'. Mijlat Aleulum Alziraeiat Aleiraqiati, 47(6),1360–8. [in Arabic].
Al-Mafraji, O.K.A. (2006). Tahlil Qudrat Alaiytilaf Wataqdir Quat Alhajiyn Walmaealim Alwirathiat Fi Albamia 'Analysis of Coalescence Capacity and Estimation of Hybrid Vigor and Hereditary Parameters in Okra'. PhD Thesis, University of Baghdad, Baghdad, Iraq. [in Arabic].
Ashwani, k., Baranwal, D.K., Judy, A. and Srivastara, K. (2013). Combining ability and heterosis for yield and its contributing characters in Okra (Abelmoschus moschatus L. moench). Madras Agriculture Journal, 100(1-3), 30–5.
Burton, G.W. (1951). Quantitative inheritance in pearlmillet (Pennisetum glaucum). Agronomy Journal, 43(9), 409–17.
Chahal, C.S. and Gosal, S.S. (2002). Principals and Procedures of Plant Breeding. United Kingdom: Alpha Science International. 
Chakravarthi, B.K. and Naravaneni, R. (2006). SSR marker based DNA fingerprinting and diversity study in rice (Oryza sativa. L). African Journal of Biotechnology, 5(9), 684–8.
Chantana, V. (1990). Genetic Variation Influence on Plant Characters and Yield of Okra (Abelmoschus Esculentus L.). Moench. Bangkok, Thailand: Thai National AGRIS Centre.
Chaudhary, B.D., Singh, R.K. and Kakar, S.N. (1974). Estimation of genetic parameters in barley (Hordeum vulgare L.). Theoretical and Applied Genetics, 45(5), 192–6.
Falconer, D.S. (1960). Introduction to Quantitative Genetics. NY, NY: The Ronald Press Company.
Frederick, J. R. and Hesketh, J.D. (1994). Genetic improvement in soybean: physiological attributes. In: G.A. Slafer (ed.) Genetic Improvement of Field Crops. NY, NY: Marcel Dekker, Inc.
General Authority for Statistics. (2015). Alnatayij Altafsiliat Liltaedad Alziraeii 'Detailed Results of the Agricultural Census'. Available at: www.stats.gov.sa/sites/default/files/ar-agri_census_reporten_0.pdf (accessed on 20/01/2020) [in Arabic].
Gite, B.D., Khorgade, P.W., Ghorade, R.B. and Sakhare, B.A. (1997). Combining ability of some newly developed male sterile and restorer lines in sorghum [Sorghum bicolor (l.) Moench]. Journal of Soils and Crops, 7(1), 80–2.
Griffing, B. (1956). Concept of general and specific combining ability in relation to diallel crossing systems. Australian Journal of Biological Sciences, 9(4), 463–92. 
Hallauer, A.R., Carena, M.J. and Miranda, F.J.B. (1981). Quantitative-Genetics in Maize Breeding. New York, NY: Springer.
Hallauer, A.R., Russel, W.A. and Lamkey, K.R. (1988). Corn breeding. In: A.R. Hallauer (ed.) Corn and Corn Improvement, 3rd edition. New York, NY: Agronomy Monograph.
Jinks, J.L. and Jones, R.M. (1958). Estimation of the components of heterosis. Genetics, 43(2), 223–34.
Khoury, B. (2006). Combining ability of some introduced varieties of durum wheat. Tishreen Uni. Journal for Studies and Scientific Research Biological Sciences Series, 28(1), 43–54.
Laxman, M., Shanthakumer, G., Thimmann, P.O., Udaykumar, K.K., Prakash, G. and Sateesh, A. (2013). Nutritional enhancement for iron content and combining ability studies in newly derived inbred lines of okra (Abelmoschus moschatus L.moench). Molecular Plant Breeding, 4(3), 24–30. 
Liou , M.L., Guo, J.W. and Wu, S.T. (2002a). Diallel analysis of quantitative characters in Okra. Journal of Agriculture and Forestry, 51(3), 57–66.
Lopes, A.C.A., Vello, N.A. and Pandini, F. (2001). Seed yield combining ability among soybean genotypes in two locations. Crop Breeding and Applied Biotechnology, 1(3), 221–8.
Mather, K. (1949). Biometrical Genetics. New York, NY: Dover publication, Inc.
Medagam, T.R., Kadiyala, H., Mutyala, G. and Hameedunnis, B. (2012). Heterosis for yield and yield components in okra (Abelmoschus sculentus L. Moench). Chilean Journal of Agriculture Research, 72(3), 316–25.
Mehta, N., Asati, B.S. and Mamidwar, S.R. (2007). Heterois and gene action in Okra. Bangladesh Journal of Agriculture Research, 32(3), 421–32.
Patro, T.S.K.K. and Ravisanker, C. (2004). Genetic variability and multivariate analysis in okra [Abelmoschus esculentus (L.) Moench]. Tropical Agriculture Research, 16(n/a), 99–113.
Saeed, A.H., Al-Kamar, M.Kh. and Al-Asi, A.H. (2014). Hisab quat alhajin walfiel alwirathii wadarajat altawrith fi albamaya (Abelmoschus esculentus L) 'Calculation of hybrid vigor, genotype and degree of heritability in Okra (Abelmoschus esculentus L)'. Majalat Jamieat Tkryt Lileulum Alziraeia, 14(2), 188–94. [in Arabic]
Singh, F., Singh, R.K., and Singh, V.P. (1974). Combining ability studies in pearl millet (Pennisetum typhoides (Burm.). Theor. Appl. Genet, 44(n/a), 106–10.
 Singh, R.K. and B.O. Chaudhary. (1985). Biometrical Methods in Quantitative Genetics Analysis. Ludhiana, India: Res, Ed Kalyani Publishers.
Singla, R., Kumari, P., Sharma, R., Thaneshwari, Th. and Sahare, H.A. (2018). Correlation studies in okra (Abelmoschus esculentus L. Moench) genotypes. Plant Archives, 18(2), 1871–4.
Smith, N.C. (2012). Dynamic Nature of Heterosis and Determination of Sink Size in Maize. PhD Thesis, University of Guelph, Ontario, Canada. 
Snedecor, G.W. and Cochran, W.G. (1981). Statistical Methods. 6th edition. New York, NY: Iowa Stat, Univ, Press, Ames. 
Warner, J.N. (1952). A method for estimating heritability. Agronomy Journal, 44(n/a), 427–30.
Wattoo, F.M., Saleem, M., Ahsan, M., Sajjad, M. and Ali, W. (2009). Genetic analysis for yield potential and quality traits in maize (Zea mays L.) American Eurasian. Journal of Agriculture and Environment Science, 6(6), 723–9.