G.E. Nwofia
Department of Agronomy, Michael Okpara University of Agriculture, Umudike, Nigeria
Q.U. Okwu
Department of Agronomy, Michael Okpara University of Agriculture, Umudike, Nigeria
ABSTRACT
Fruits of fifteen morphotypes of Carica papaya of sunrise solo was evaluated to determine their nutritive characteristics, phenotypic and genotypic variability as well as the heritability and expected genetic advance of the nutritive traits. The result indicated that the moisture content was high among the morphotypes and differed significantly (p<0.01). Protein values were significantly different among the morphotypes and ranged from 0.293 to 0.82%. Crude fat was low in all the morphortypes and the morphotypes varied significantly (p<0.01) in carbohydrate, ash, moisture content and dry matter contents. The mineral and vitamin contents of the morphotypes also varied significantly from one another (p<0.01). High thiamine content was observed in Pear red fruits while vitamin C content was high in oblong yellow fruits. The variability observed in these traits were more of genetic nature than non-genetic and indicates that there is considerable scope for selections in the morphotypes. High heritability and genetic advance was observed in crude fibre, ash, calcium, sodium, protein and riboflavin indicating that selection for these traits can be effective for their improvement.
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How to cite this article
G.E. Nwofia and Q.U. Okwu, 2012. Studies on Nutritive Characteristics and Variability in Pawpaw (Carica papaya L.). Pakistan Journal of Nutrition, 11: 957-962.
DOI: 10.3923/pjn.2012.957.962
URL: https://scialert.net/abstract/?doi=pjn.2012.957.962
DOI: 10.3923/pjn.2012.957.962
URL: https://scialert.net/abstract/?doi=pjn.2012.957.962
REFERENCES
- Allard, R.W., 1999. Principles of Plant Breeding. 2nd Edn., John Wiley and Sons, Hoboken, New Jersey, ISBN-13: 9780471023098, Pages: 264.
Direct Link - Akubuo, C.O. and M.I. Uguru, 1999. Studies on the nutritive characteristics and fracture resistance to compressive loading of selected bambara groundnut lines. J. Sci. Food Agric., 79: 2063-2066.
CrossRef - Baiyeri, K.P., 2006. Seedling emergence and growth of pawpaw (Carica papaya) grown under different coloured shade polyethylene. Int. Agrophys. J., 20: 77-84.
Direct Link - Baye, T., 2002. Genotypic and phenotypic variability in Vernonia galamensis germplasm collected from eastern Ethiopia. J. Agric. Sci., 139: 161-168.
CrossRef - Bouanga-Kalou, G., A. Kimbonguila, J.M. Nzikou, F.B. Ganongo-Po and F.E. Moutoula et al., 2011. Extraction and characteristics of oil seed from papaya (Carica papaya) in Congo Brazzaville. Asian J. Agric. Sci., 3: 132-137.
Direct Link - Dashak, D.A. and C.N. Fali, 1993. Chemical composition of four varieties of Nigerian benniseed (Sesamum indicum). Food Chem., 47: 253-255.
CrossRefDirect Link - Dudley, J.W. and R.H. Moll, 1969. Interpretation and use of estimates of heritability and genetic variances in plant breeding. Crop Sci., 9: 257-262.
CrossRefDirect Link - Druzic, J., S. Voca, Z. Cmelik, N. Dobricevic, B. Duralija and M.S. Babojelic, 2007. Fruit quality of plum cultivars 'Elena' and 'Bistrica'. Agric. Cons. Sci., 72: 307-310.
Direct Link - Fehr, W.R., 1987. Principles of Cultivar Development. Vol. 1, Macmillan Publishing Co., New York.
Direct Link - Golani, I.J., D.R. Mehta, M.V. Nahiyadhara, H.M. Pandya and V.C. Purohit, 2007. A study on genetic diversity and genetic variability in brinjal. Agric. Sci. Digest., 27: 22-25.
Direct Link - Hefny, M., 2011. Genetic parameters and path analysis of yield and its components in corn inbred lines (Zea mays L.) at different sowing dates. Asian J. Crop Sci., 3: 106-117.
CrossRefDirect Link - Hewitt, H.H., S. Whittle, S.A. Lopez, E.Y. Bailey and S.R. Weaver, 2000. Topical use of papaya in chronic skin ulcer therapy in Jamaica. West Indian Med. J., 49: 32-33.
PubMedDirect Link - Johnson, H.W., H.F. Robinson and R.E. Comstock, 1955. Estimates of genetic and environmental variability in soybeans. Agron. J., 47: 314-318.
CrossRefDirect Link - Nayakar, N.Y., 1976. Genetic variability and heritability for six quantitative characters in niger (Guizotia abyssinica Cass). Mysore J. Agric. Sci., 10: 553-558.
Direct Link - Nwofia, G.E., E.E. Ene-Obong and P.I. Okocha, 2006. Genotypic and phenotypic variability in cowpea grown in a humid environment in Nigeria. Trop. Sci., 46: 82-86.
CrossRef - Prasad, S.R., R. Prakash, C.M. Sharma and M.F. Haque, 1981. Genotypic and phenotypic variability in quantitative characters in oat. Indian J. Agric. Sci., 54: 480-482.
Direct Link - Voca, S., A. Golic, Z. Sindrak, N. Dobricevic, S. Pliestic and J. Druzic, 2009. Chemical composition and antioxidant capacity of three plum cultivars. Agric. Conspectus Sci., 74: 273-276.
Direct Link