Fida Hussain
Wheat Research Institute, Ayub Agricultural Research Institute, Faisalabad
Muhammad Ashraf
Department of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan
Syed Sadaqat Mehdi
Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad, Pakistan
Malik Tanveer Ahmad
Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad, Pakistan
ABSTRACT
Eight bread wheat (Triticum aestivum L.) cultivars were crossed in a diallel fashion and evaluated for heterosis in F1 generation for grain yield and other economic traits under leaf rust conditions. Highly significant differences were found among genotypes for all the traits studied. Significant positive heterosis and heterobeltiosis was observed for grain yield per plant in almost all crosses. Estimates for positive significant heterosis over mid and better parents for plant height were 68 and 32% of total crosses where as 44 and 35 crosses gave significant positive increased tillers per plant over their mid and better parents, respectively. Positive and significant heterotic effects were measured as 11.61, 61.90, 30.67, 2.3, 51.89, 126.64, 111.71 and 45.91% from crosses SA42 x Nacozari, MH 97 x Crow, Parula x Chenab70, Crow x Nacozari, Crow x Chenab70, SA42 x Nacozari, MH97 x SA42 and Nacozari x Chenab for plant height, tillers per plant, grains per spike, spikelets per spike, grain weight, grain yield, biological yield per plant and harvest index, respectively.
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How to cite this article
Fida Hussain, Muhammad Ashraf, Syed Sadaqat Mehdi and Malik Tanveer Ahmad, 2004. Estimation of Heterosis for Grain Yield and its Related Traits in Wheat (Triticum aestivum L.) under Leaf Rust Conditions. Journal of Biological Sciences, 4: 637-644.
DOI: 10.3923/jbs.2004.637.644
URL: https://scialert.net/abstract/?doi=jbs.2004.637.644
DOI: 10.3923/jbs.2004.637.644
URL: https://scialert.net/abstract/?doi=jbs.2004.637.644
REFERENCES
- Wynne, J.C., D.A. Emery and P.W. Rice, 1970. Combining ability estimates in Arachis hypogaea L. II. Field performance of F1 hybrids. Crop Sci., 10: 713-715.
CrossRefDirect Link - Steel, R.G.D. and J.H. Torrie, 1980. Principles and Procedures of Statistics: A Biometrical Approach. 2nd Edn., McGraw-Hill Book Co., New York, USA., ISBN-13: 9780070609266, Pages: 633.
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