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Pak. J. Bot., 47(1): 57-61, 2015. |
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Updated: 24-02-15 | ||||
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Gene Action Studies for Protein Quality Traits in Zea mays L. under normal and drought conditions
Mozammil HUSSAIN1, Tauseef Taj KIANI1*, Kausar nawaz shah2, Abdul Ghafoor3 and ashiq rabbani3
Abstract: A complete 8 × 8 diallel set (parents and F1 hybrids) involving eight maize inbred lines was planted in replicated trials. Genetic components D and H (H1, H2) showed that inheritance of quality traits i.e. protein, tryptophan and lysine percentage was under the control of additive effects with partial-dominance under normal as well as drought stress conditions. Inbred line NCMLD4 contained maximum number of dominant genes for protein and tryptophan percentage across water regimes. Additive gene action together with high narrow sense heritability suggested that improvement in maize for these traits through early generation selection can prove fruitful.
Key words: Maize, gene action, quality protein maize, additive-dominance model, heritability
1Maize, Sorghum and Millet Program, Crop Science Institute, National Agricultural Research Centre, Islamabad, Pakistan 2Department of Plant Breeding and Genetics, PMAS Arid Agriculture University Rawalpindi, Pakistan. 3Plant Genetic Resources Institute, National Agricultural Research Centre, Islamabad, Pakistan. *Corresponding author e-mail: tauseef.kiani@yahoo.com |
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