Informasi Detil Paper |
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| Judul: | Peragaan Grafis GGE-Biplot untuk Evaluasi Keragaan Genotipe-Genotipe dan Perubahan Lingkungan Bercekaman di Pulau-Pulau Kecil |
| Penulis: | Edizon Jambormias || email: edy_jambormias@yahoo.com |
| Jurnal: | Prosiding PERMAMA 2011 Vol. 1 no. 1 - hal. 299-310 Tahun 2011 [ Prosiding ] |
| Keywords: | GGE biplot, stability, local adaptation, specific adaptation, MET data |
| Abstract: | Evaluation of stability, local adaptation and specific adaptation of genotypes from a Multi-environment Trials (MET) data become more difficult when there is a genotype-by-environment interaction (GEI). GGE Biplot display offers a better solution to evaluate such a tendency, especially to show mega-environment differences included stress mega-environment; biologically and agronomically stability, local adaptation and environment-specific adaptation and to evaluate the trial environment whether a mega-environment is representative as a suitable environment and possibility of degradation of an optimum environment to stress environment in small islands. Data analysis was initiated by singular value decomposition (SVD) of the genotypes x environment cross tabulation data. The Singular value and principal component scores was used to generate a biplot curve between the first principal component (PC1) and the second principal component (PC2). The results of the data analysis will be showed: 1) there were the different of mega-environments included stress mega-environment, 2) The genotype(s) that agronomically and biologically stable, 3) The genotype(s) showed local adaptation at each mega-environment, 4) The genotype(s) showed specific adaptation to a stress environment, and 5) Environment that was suitable for increasing plant yield so that the mega-environment the contained these environments represented a trial environment, included possibility of degradation of an optimum environment to stress environment. |
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