Summary
Two tests for detection of cross over genotype × environment interactions for grain yield in pearl millet varietal trials with 13 entries tested at 26 sites in India during 1987–88 were used. The first test for a two-way table of varieties and environments detected significant cross over interactions involving directional change in the rank order of varietal means across environments for five varieties, namely, MP 122, MP 131, MP 154, MP 156 and MP 162 against the standard variety WC-C-75 at the α = 0.05 level. When the α = 0.10 level was used the cross over interactions were also significant for all the remaining six varieties and one hybrid against WC-C-75. The second test comparing grain yield differences of 11 varieties and one hybrid (MBH 130) with WC-C-75 in 26 environments revealed significant quantitative and cross over interactions for all the entries. The first test is conservative and use of α = 0.10 level seems appropriate for obtaining results comparable to the second test. The two tests emphasized the importance of breeding for specific adaptation in pearl millet rather than general adaptation.
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References
Azzalini, A. & D.R. Cox, 1984. Two new tests associated with analysis of variance. J.R. Statist. Soc. B. 46: 335–343.
Baker, R.J., 1988. Tests for cross over genotype-environmental interactions. Can. J. Plant Sci. 68: 405–410.
Eberhart, S.A. & W.A. Russell, 1963. Stability parameters for comparing varieties. Crop Sci. 6: 36–40.
Finlay, K.W. & G.N. Wilkinson, 1963. The analysis of adaptation in a plant breeding programme. Aust. J. Agric. Sci. 14: 742–754.
Gail, M. & R. Simon, 1985. Testing for qualitative interactions between treatment effects and patient subsets. Biometrics 41: 361–372.
Perkins, J.M. & J.L. Jinks, 1968. Environment and genotype-environmental components of variability. III. Multiple lines and crosses. Heredity 23: 339–356.
Peto, R., 1982. Statistical aspects of cancer trials. Pages 867–871. In: E.E.Halnan. (Ed.), Treatment of Cancer. Chapman and Hall, London, UK.
Virk, D.S., N.B. Singh, M. Srivastava & G. Harinarayana, 1984. Regression analysis for general adaptation in pearl millet using different environmental indices. Theor. Appl. Genet. 68: 509–513.
Virk, D.S. & P.S. Virk, 1986. Regression analysis of genotype × environmental interactions in pearl millet. Proc. 6th Eucarpia Meeting Sect. Biometrics in Plant Breeding, University of Birmingham (UK), pp. 309–322.
Virk, D.S., P.S. Virk, B.K. Mangat & G. Harinarayana, 1988. Linear and non-linear regression analysis of genotype × environment interactions in pearl millet. Theor. Appl. Genet. 75: 736–740.
Virk, D.S., P.S. Virk, G. Singh, G. Harinarayana & R.S. Saini, 1985. Stability analysis for comparing pearl millet hybrids. SABRAO J. 17(2): 129–133.
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Virk, D.S., Mangat, B.K. Detection of cross over genotype × environment interactions in pearl millet. Euphytica 52, 193–199 (1991). https://doi.org/10.1007/BF00029396
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DOI: https://doi.org/10.1007/BF00029396