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Cultivar Evaluation and Mega-Environment Investigation Based on the GGE Biplot

Weikai Yan, L.A. Hunt, Qinglai Sheng and Zorka Szlavnics

Department of Plant Agriculture, University of Guelph, Guelph, Ontario, Canada N1G 2W1



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Fig. 1 The GGL biplot based on the 1992 Ontario winter wheat performance trial data. (A) Comparison of the genotypes at a given location, (B) comparison of the performance of a given genotype at different locations, (C) comparison of two genotypes at each and all locations, and (D) mega-environments and their winning cultivars. The full cultivar names are Ann = Annete, Aug = Augusta, Del = Delaware, Ena = Ena, Ham = Harmil, Har = Harus, Kar = Karena, Reb = Rebecca, Ron = AC Ron, and Zav = Zavitz. The full location names are BH = Bath, CA = Centralia, EA = Elora, GH = Guelph, HN = Harriston, HW = Harrow, ID = Inwood, KE = Kemptville, LN = London, MH = Morpeth, NN = Nairn, OA = Ottawa, RN = Ridgetown, WE = Woodslee, WK = Woodstock, WP = Winthrop

 


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Fig. 2 The GGL biplot based on the 1989 to 1993 Ontario winter wheat performance trial data. The full cultivar names are Ann = Annete, Aug = Augusta, Del = Delaware, Ena = Ena, Ham = Harmil, Har = Harus, Kar = Karena, Reb = Rebecca, Ron = AC Ron, and Zav = Zavitz. The full location names are BH = Bath, CA = Centralia, EA = Elora, GH = Guelph, HN = Harriston, HW = Harrow, ID = Inwood, KE = Kemptville, LN = London, MH = Morpeth, NN = Nairn, OA = Ottawa, RN = Ridgetown, WE = Woodslee, WK = Woodstock, WP = Winthrop

 


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Fig. 3 The GGL biplot based on the 1996 to 1998 Ontario winter wheat performance trial data.The full cultivar names are Ann = Annete, Aug = Augusta, Del = Delaware, Ena = Ena, Ham = Harmil, Har = Harus, Kar = Karena, Reb = Rebecca, Ron = AC Ron, and Zav = Zavitz. 2510, 2533, 2540, 2557, 2737 are cultivars from Pioneer Hi-Bred Limited. The full location names are BH = Bath, CA = Centralia, EA = Elora, GH = Guelph, HN = Harriston, HW = Harrow, ID = Inwood, KE = Kemptville, LN = London, MH = Morpeth, NN = Nairn, OA = Ottawa, RN = Ridgetown, WE = Woodslee, WK = Woodstock, WP = Winthrop

 





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