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Heat map depicting the mean performance of potato varieties at the 10 environments. The numbers (1-12) represent Genotypes (varieties) as depicted in Table 1. E1=Bekoji 2019, E2= Bekoji 2020, E3=Asasa 2019, E4= Asasa 2020, E5= Kofele 2020, E6 = Kofele 2019, E7= Sagure 2019, E8= Sagure 2020, E9= Kulumsa 2019, E10= Kulumsa 2020.

Heat map depicting the mean performance of potato varieties at the 10 environments. The numbers (1-12) represent Genotypes (varieties) as depicted in Table 1. E1=Bekoji 2019, E2= Bekoji 2020, E3=Asasa 2019, E4= Asasa 2020, E5= Kofele 2020, E6 = Kofele 2019, E7= Sagure 2019, E8= Sagure 2020, E9= Kulumsa 2019, E10= Kulumsa 2020.

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Fig. 1. Heat map depicting the mean performance of potato varieties at...
Fig. 3. Average-environment coordination views to show (a) means vs...
Fig. 5. Pearson correlation coefficients of phenological, agronomic,...
Fig. 6. Participatory evaluation scores consistent between the five...
+1 Descriptions of the five testing environments in Southeast Ethiopia.
Stability, performance and participatory evaluation of potato varieties under rain-fed and irrigation conditions at Southeast, Ethiopia
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  • Feb 2025
The goal of potato breeding is to develop widely adaptable, highly productive cultivars that farmers would prefer. The objective of this study was to evaluate the performance and stability of potato varieties linking the preferences of smallholder farmers in rain-fed and irrigated environments. Using a randomized complete block design in three repl...
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Context 1
... mean marketable tuber yield (MTY) (t ha -1 ), of potato varieties across ten environments was presented in Figure 1. On average, genotypes Gera, Gudanie, Bubu, Shenkolla, Belete, and Guassa gave the highest mean MTY across environments. ...
Context 2
... mean marketable tuber yield (MTY) (t ha -1 ), of potato varieties across ten environments was presented in Figure 1. On average, genotypes Gera, Gudanie, Bubu, Shenkolla, Belete, and Guassa gave the highest mean MTY across environments. Varieties Jalenie and Dagim had the lowest mean MTY of all tested varieties across environments (Fig. 1) (Table 4) in the main cropping season Meher. Under irrigation conditions, Gera (49.69 t ha -1 ) produced the highest MTY, followed by Bubu (46.24 t ha -1 ) and the lowest yield was recorded from Gorebella (23.55 t ha -1 ). This analysis was closely related to previous studies by Amenu et al. ...
Context 3
... and representativeness using GGE bi-plot A similar analysis was applied for an environment-focused biplot, which represents the ideal environment within a mega-environment. The ideal environment must have high discriminating power and representativeness. In this study, the ideal test environments were Sagure 2019 and Sagure 2020 environments (Fig. 1, 2d, 3a, and 3b). Test environments that had proximity to the ideal environment on the axis were positively correlated with genotypes closer to them. Each environment had a higher interaction with the varieties/genotypes in the test environment in influencing the performances of potato varieties. The purpose of validation of the test ...