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Published online 23 September 2005
Published in Crop Sci 45:2160-2171 (2005)
© 2005 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Genotype x Environment Interactions for a Diverse Set of Sweetpotato Clones Evaluated across Varying Ecogeographic Conditions in Peru

Wolfgang J. Grüneberga,*, Kurt Manriqueb, Dapeng Zhangb and Michael Hermannb

a Institute of Agronomy and Plant Breeding, Georg August Univ. of Göttingen, Von Siebold Str. 8, D-37075 Göttingen, Germany
b Dep. of Genetic Resources and Crop Improvement, International Potato Center, P.B. 1558, Lima 12, Peru



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  		Fig. 1. Storage root yield of local control (check) clones and another nine clones of sweetpotato used for analysis of genotype x environment interactions across 14 environments: OXA = Oxapampa, SRA = San Ramon, AQP = Arequipa, LMO = La Molina, TIM = Tingo Maria, TAC = Tacna, HCO = Huanuco. Nitrogen fertilization: N0 = 0 and N80 = 80 kg ha–1.

 


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  		Fig. 2. The AMMI biplot of nine sweetpotato clones evaluated for (A) storage root yield and (B) biomass production in 14 environments in Peru.

 


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  		Fig. 3. Cluster analysis of 14 environments in Peru in multidimensional space of storage root yield for seven clones of sweetpotato. OXA = Oxapampa, SRA = San Ramon, AQP = Arequipa, LMO = La Molina, TIM = Tingo Maria, TAC = Tacna, HCO = Huanuco. Nitrogen fertilization: N0 = 0 and N80 = 80 kg ha–1.

 


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  		Fig. 4. Cluster analysis of nine clones of sweetpotato in multidimensional space of storage root yield across 14 environments in Peru.

 




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