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    GGE BIPLOT ANALYSIS IN WILD (PISUM SATIVUM L. SUBSP. ELATIUS AND SUBSP. SATIVUM) AND CULTIVATED PEA (PISUM SATIVUM L.) GENOTYPES IN NORTHERN AND SOUTHERN TURKEY
    (Aloki Applied Ecological Research And Forensic Inst Ltd, 2020) Girgel, U.; Cokkizgin, A.
    This research was carried out in the multiple-environment trials (MET) which one is in Bayburt (40 degrees 24'05.7 '' N 40 degrees 08'31.3 '' E) where the Black Sea geographical region located in the north of Turkey and in the Kahramanmaras (37 degrees 35'24.8 '' N 36 degrees 48'49.4 '' E) where the Mediterranean geographical region located in the south of Turkey in 2016 and 2017 years. In this investigation, 6 registered pea cultivars (Bolero, Jof, Karina, Nihal, Reyna and Utrillo) and 2 wild pea genotypes (Pisum sativum L. subsp. elatius and P. sativum L. subsp. sativum) were used. The variance analysis showed a significant difference among Location (L), genotypes (G), genotypes x locations interaction (GL), genotypes x year interaction (GY), year x location interaction (YL) (all significant at P<0.01 level) and genotype x location x year interaction (GLY) (significant at P<0.05 level) interaction in terms of seed yield. Main effect genotypes (G) is explained 24.42% of total variation. This is followed by 18.78% (L), 17.87% (YL) 7.04% (GL), 4.91% (GY), 2.71% (GLY) and 1.12% (Y), respectively. Graphs were drawn according to the results of GGE biplot analysis and yield data of genotypes were evaluated according to these graphs. In accordance with GGE biplot analysis the seed yield first principal component explained 82.81% of the total variation and second principal component explained 17.19% of the total variation.