Genotype-environment interaction in the evaluation of selected potato quality characteristics
Antoni Bombik
iro@uph.edu.plKatedra Doświadczalnictwa Rolniczego, Akademia Podlaska w Siedlcach (Poland)
Czesław Stankiewicz
Zakład Genetyki i Fizjologii Roślin, Akademia Podlaska w Siedlcach (Poland)
Józef Starczewski
Katedra Ogólnej Uprawy Roli i Roślin, Akademia Podlaska w Siedlcach (Poland)
Abstract
In the studies carried out in 1997–1999, the content of vitamin C, starch and the total protein as well as the exogenous amino acids sum were determined in tubers of two potato varieties: Irga table potato and Ekra industrial potato. The genotype-environment interaction for these characteristics was evaluated based on the main effects (genotypes and years) and specific effects (interaction), with the use of standard variance analysis for multiple experiments and Tukey’s test. The variance of the genotypes stability (s2i), which characterizes environmental variability of genotypes, was calculated in addition to the ecovalence coefficient (Wi), which describes the interaction of a genotype with the environment. Most of the analysed characteristics of potato quality (except the exogenous amino acids content) were influenced by the varieties (genotypes). As regards the two genotypes under study, a higher content of both vitamin C and starch was found in variety. Ekra, whereas a higher total protein content was typical of var. Irga. The tuber quality characteristics were modified by the environment. The genotype-environment interaction, relating to the different reaction of varieties on changeable environmental conditions, was also significant. The analysis of this interaction did not allow to select satisfactorily stable genotype (variety Irga is more stable for some characteristics, whereas variety Ekra is more stable for the others).
Keywords:
exogenous amino acids, genotype-environment interaction, genotype stability, potato, protein, starch, vitamin CReferences
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Authors
Antoni Bombikiro@uph.edu.pl
Katedra Doświadczalnictwa Rolniczego, Akademia Podlaska w Siedlcach Poland
Authors
Czesław StankiewiczZakład Genetyki i Fizjologii Roślin, Akademia Podlaska w Siedlcach Poland
Authors
Józef StarczewskiKatedra Ogólnej Uprawy Roli i Roślin, Akademia Podlaska w Siedlcach Poland
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Copyright (c) 2003 Antoni Bombik, Czesław Stankiewicz, Józef Starczewski
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