Malak A.U. Khan, Fida Mohammad, Taimur Malik, Abid Khan, Sayed J. Abbas


Studying genetic divergence of quantitative traits and their contribution towards yield is essential for developing high yielding varieties. To study genetic divergence of F4:6 wheat lines for yield contributing traits, an experiment was conducted comprising 48 advance wheat lines and a check cultivar Janbaz at the University of Agricultural Peshawar, Pakistan during 2010-11. The research was laid out in alpha lattice design with 2 replications. Analysis of variance revealed highly significant differences among wheat lines for yield and related traits. Moderate to high magnitude of heritability estimates (0.53-0.93) were observed for days to heading, flag leaf area, plant height (cm), spikes plot-1, grain weight spike-1, grain yield and harvest index, while low to moderate heritability estimates (0.23-0.48) for spike length, grains spike-1, 1000-grain weight and biological yield. The selection response were 6.40 days for heading, 9.57 cm2 for flag leaf area, 11.74 cm for plant height, 0.83 cm for spike length, 185.11 spikes for spikes plot-1, 7.49 for grains spike-1, 0.67 g for grain weight spike-1, 5.07 g for 1000 grain weight, 628.50 kg ha-1 for biological yield, 855.92 kg ha-1 for grain yield and 5.56 % for harvest index, respectively. Selection differentials were 208.4 spikes for spikes plot-1, 1.9 cm for spike length, 13.4 for grains spike-1, 0.7 g for grain weight spike-1, 8.1 g for 1000 grain weight and 795.4 kg ha-1 for grain yield, respectively. Spikes plot-1, grains spike-1, grain weight spike-1, 1000-grain weight and harvest index had high correlations with grain yield. The crossings of Tatara, Ghaznavi-98 and Wafaq performed better than the check cultivar for most of the yield based desirable traits.


Genetic divergence, F4:6 Lines, heritability, selection response, selection differential

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Ahmad, A., S. Khan, S. Q. Ahmad, H. Khan, A. Khan, and F. Muhammad. 2011. Genetic analysis of some quantitative traits in bread wheat across environments. African J. of Agric. Res. 6(3): 686-692.

Ajmal, S. U., N. Zakir, and M. Y. Mujahid. 2009. Estimation of genetic parameters and character association in wheat (Triticum aestivum L.). J. Agric. Biol. Sci. 1(1): 15-18.

Akram, Z., S. U. Ajmal, and M. Munir. 2008. Estimation of correlation coefficient among some yield parameters of wheat under rainfed conditions. Pak. J. Bot. 40(4): 1777-1781.

Aliu, S. A, and S. Fetahu. 2010. Determination on genetic variation for morphological traits and yield components of new winter wheat lines. Notulae Sci. Biol. 1(2): 121-124.

Asif, M., M. Y. Mujahid, N. S. Kisana, S. Z. Mustafa, and I. Ahmad. 2004. Heritability, genetic variability and path coefficient of some traits in spring wheat. Sarhad J. Agric. 20(1): 87-91.

Eid, M. H. 2009. Estimation of heritability and genetic advance of yield traits in wheat (Triticum aestivum L.) under drought condition. Int. J. Genet. Mol. Biol. 1(7): 115-120.

Falconer, D.S., and T.F.C. Mackay. 1996. Introduction to quantitative genetics. (4th Ed) Longman Scientific and Tech. England.

Farooq, J., I. Khaliq, A. S. Khan, and M. A. Pervez. 2010. Studying the genetic mechanism of some yield contributing traits in wheat. Int. J. Agric. Biol., 12(2): 241–246.

Farshadfar, E. M., and J. Sutka. 2005. Combining ability analysis of rainfed tolerance in wheat over different regimes. Acta. Agronomica Huagarica. 48(4): 353- 361.

Francis, C. A., J. N. Rutger, and A. F. E., Palmer. 1969. A rapid method for plant leaf area estimation in mazie. Crop. Sci. 9(5): 537-539.

Gupta, S. K., and S. R. Verma. 2000. Variability, heritability and genetic advance under normal and rainfed conditions in durum wheat. Indian J. Agric. Res. 34: 122-125.

Iqbal, M. and M. A. Khan. 2006. Diallel analysis of some physio-morphological traits in spring wheat (Triticum aestivum L.). Int. J. Agric. Biol. 12(2): 241–246.

Khan, M.Q., S. Anwar, and M. I. Khan. 2003. Genetic variability for seeding traits in wheat under moisture stress condition. Asian, J. Pl. Sci. 5 (1): 588-590.

Kwon, S.H. and J.H. Torrie. 1964. Heritability and interrelationship among traits of two soybean population. Crop Sci. 4: 194-198.

Memon, S., M.U.D. Qureshi. B. A. Ansari and M. A. Sial. 2007. Genetic heritability for grain yield and its related characters in spring wheat. Pak. J. Bot. 39(5): 1503-1509.

Memon, S.M, B.A. Ansari and M.Z. Balouch. 2005. Estimation of genetic variation for agroeconomic traits in spring wheat wheat (Triticum aestivum L.). Ind. J.Pl. Sci. 4:171-175.

Muhammad, F. S., A. Jadoon, S. M. Rashid, and S. Shaheen. 2006. Heritability estimates for coleoptiles length and other traits in bread wheat. Sarhad J. Agric. 22(3): 405-408.

Pakistan. 2010-2011. Agricultural statistics of Pakistan. Pakistan Bureau of Statistics.

Rashidi, V. 2011. Genetic parameters of some morphological and physiological traits in durum wheat genotypes. African J. of Agric. Res. 6(10): 2285-2288.

Sial, M.A. 2007. Genetic heritability for grain yield and its related characters in spring wheat (Triticum aestivum L.). Pak. J. Bot. 39: 1503–1509.

Singh, R. K., and B. D. Chaudhery. 1985. Biomentrical methods in quantitative genetic analysis. Kalyani Pub., N. Delhi, India.

Steel R.G.D. and Torrie J.H. 1980. Principles and Procedures of Statistics: A Biometrical Approach. McGraw Hill Co., New York, USA.

Yagdi, K., and E. Sozan. 2009. Heritability, variance components and correlations of yield and quality traits in durum wheat. Pak. J. Bot. 41(2): 753-759.


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Journal of Plant Breeding and Genetics
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