Vol: 40 Page: 81

Authors:
Krzysztof Ukalski
Tadeusz Śmiałowski
Joanna Ukalska

Title:
 Analysis of oat yield environments using graphical GGE method

Language: English

Keywords:
biplot
GGE effects
covered grain oats
naked grain oats
principal component analysis

Summary:
Yield data of 29 covered grain oat cultivars tested across 6 environments and 14 naked grain oat cultivars tested across 5 environments during the 2008 growing season were analyzed using the GGE (i.e., G, genotype + GEI, genotype-by-environment interaction) biplot method. GGE biplot analysis is an efficient method which is based on principal component analysis (PCA) to fully explore multi-environment trials. It allows a visual examination of the relationships among the test environments. GGE-biplots for the environments were compared with the correlation coefficient respectively within 6 covered grain oat cultivar environments as well as within 5 naked grain oat cultivar environments. So-called ideal environment has been determined. The ideal environment among 6 environments of covered grain oat cultivars was Polanowice (POB). Polanowice (POB) turned out to be also the ideal environment among 5 environments of naked grain oat cultivars.

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