The present study was carried out to detect the epistasis present in two cross of maize through triple test cross (TTC) analysis. The mean squares due to total epistasis was highly significant at Pâ‰¤0.01 for all the characters in both C-I and C-II, except for ear length in C-I. The i type of epistasis was highly significant for the traits such as days totasseling, days to silking, earlength, ear circumference, kernels row-1,100 grain weight and shelling percentage in C-I and in C-II, â€˜iâ€™ type was non-significant for ASI, ear length, kernels row-1and grain yield plot-1. Both j type and l type of epistasis were significant for all characters in both C-I and C-II, except for ear length in C-I and days to silking in C-II. The estimate of additive genetic component (D) was highly significant for all characters in both C-I and C-II. Epistasis played a significant role in the inheritance of all the characters in both C-I and C-II except for ear length in C-I. Both additive and dominance components of genetic variance with a predominance of dominance genetic variance played an important role in the inheritance of all the quantitative traits except ear length in C-I and kernel rows ear-1 in C-II.
Additive, dominance, epistasis, genetic variance, Triple test cross analysis
Beddow, A. R., Breese, E. L. and Lewis, B. (1962). The genetic assessment of heterozygous breeding material by means of a diallel cross. I. Description of
parents, self- and cross-fertility and early seedling vigour. Heredity, 17: 501-512.
Comstock, E., Robinson, H. F. and Harvey, P. H.(1949). A breeding procedure designed to make maximum use of both general and specific combining ability. Agronomy Journal, 41: 360-367.
Chahal, G. S. and Jinks, J. L. (1978). A general method of detecting the additive, dominance and epistatic variation that inbred lines can generate using a single tester.
Heredity, 40: 117-125.
Hassan-Sher., Muhammad-Iqbal., Kiramat-Khan., Muhammad-Yasir., Hameed-ur-Rahman- (2012). Genetic analysis of maturity and flowering characteristics in maize (Zea mays L.). Asian Pacific Journal of Tropical
Biomedicine, 2: 621-626.
Jinks, J. L., Perkins, J. M., Breese, B. L. (1969). A general method of detecting additive, dominance and epistatic variation for metrical traits. II: Application to inbred lines, Heredity, 24: 45-57.
Jinks, J. L, and Perkins, J. M. (1970). A general method for the detection of additive, dominance and epistatic
components of variation. III. F2 and backcross populations. Heredity, 25: 419-429.
Jin Ming Hua., Li Ji Zhu., Wang Yong., Yu Xiao Dong., Wen Wei and Yang Wei Guang. (2008), Genetic studies on kernel length of maize. Journal of Jilin Agricultural University. 30: 119-121.
Kalla, V., Kumar, R and Basandrai, A. K. (2001). Combining ability analysis and gene action estimates of yield and yield contributing characters in maize (Zea mays L.). Crop Research., 22:102-106.
Kearsey, M. J. and Jinks, J. L. (1968). A general method of detecting additive, dominance and epistatic variation for metrical traits. I: Theory. Heredity,23:403-409.
Kumar, P. and Gupta, S. C.(2002), Inheritance of some
quantitative traits in maize. Annals of Agricultural
Sciences, 23: 96-100.
Nehvi, F. A., Iqbal Asif, M., Wani Shafiq, A., Lone Ajaz, A. and Khan, M. A. (2009). Triple test cross analysis in maize (Zea Mays L.). Crop Improvement.,36(1): 25-28.
Rao, M. S, and Singh, R. D. (2006). Genetic studies on plant, maturity and physiological characters of maize (Zea mays L.) under rainfed and irrigated conditions, Plant breeding in post genomics era. In: Proceedings of
Second National Plant Breeding Congress, Coimbatore, India,-1-3-March,-2006. 153-159.
Singh, S. B. and Gupta, B. B. (2008). Triple test cross
analysis to detect of epistasis for morpho-physiological traits related to drought tolerance and yield components in maize (Zea mays L.). Journal of Research. 7(2): 202-209.
Sofi, P., Rather, A. G. and Venkatesh, S. (2006). Triple test cross analysis in maize (Zea mays L.). Indian Journal of Crop Science.1(1-2): 191-193.
Sofi, P., Rather, A. G. and Zahoor. D. (2007). Association of heterotic expression for grain yield and its component traits in maize (Zea mays L). International Journal of Agricultural Research.2(5): 500-503.
Wolf, D. P. and Hallauer, A. R. (1997). Triple testcross analysis to detect epistasis in maize. Crop Science. 37(3): 763-770.
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