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<p>The productivity of sorghum is very low because of many factors and among which lack of high yielding varieties is the major one. Hence, this study aimed at identifying stable and high yielding genotypes and thereby identifying elite genotypes for further breeding. The study, consisted of 16 sorghum genotypes, was conducted in three locations during 2021 main cropping season under rainfed condition using randomized completely block design. Data were analyzed using R statistical environment and genotype by yield *trait (GYT) was computed from genotype by trait (GT) to construct GYT bi-plots. Both the environment, genotype and genotype by environment interaction were statistically (<i>P</i> &lt; 0.001) significant for all traits except number of tillers and productive tillers. The highest (4088.6&#xa0;kg/ha and 3653.2&#xa0;kg/ha) yield was recorded from G10 and E2 respectively. Yield was significantly correlated with most traits while it was negatively correlated with days to 50% flowering and 50% maturity. Based on AMMI-1 bi-plot, GYT table, which won where view of the GYT bi-plots, weighted average absolute scores, G10 is the highest yielding genotype. Moreover, based on the genotypes ranking G10 show the best for yield–trait combinations profile. Based on the AMMI-2 bi-plot and weighted average absolute scores G1, G3, G4 and G14 are the stable genotypes. Based on the multi-trait genotype-ideotype distance index (MGIDI) G4 and G13 are the selected genotypes considering all traits indicating due attention is required to these genotypes. This study identified G10 as the most desirable genotype and this genotype should be verified to be used as a check, in the absence of released deber variety.</p>

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The application of Genotype by Yield*Trait, MGIDI and AMMI bi-plots to identify adaptable Sorghum [Sorghum bicolor [L.] Moench] genotypes in Western Tigray, Ethiopia

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  • 发表日期：

    2026年2月23日

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  • Alembrhan Kelem,
  • Gebremedhn Gebregergs,
  • Letemariam Desta,
  • Fiseha Baraki

摘要

The productivity of sorghum is very low because of many factors and among which lack of high yielding varieties is the major one. Hence, this study aimed at identifying stable and high yielding genotypes and thereby identifying elite genotypes for further breeding. The study, consisted of 16 sorghum genotypes, was conducted in three locations during 2021 main cropping season under rainfed condition using randomized completely block design. Data were analyzed using R statistical environment and genotype by yield *trait (GYT) was computed from genotype by trait (GT) to construct GYT bi-plots. Both the environment, genotype and genotype by environment interaction were statistically (P < 0.001) significant for all traits except number of tillers and productive tillers. The highest (4088.6 kg/ha and 3653.2 kg/ha) yield was recorded from G10 and E2 respectively. Yield was significantly correlated with most traits while it was negatively correlated with days to 50% flowering and 50% maturity. Based on AMMI-1 bi-plot, GYT table, which won where view of the GYT bi-plots, weighted average absolute scores, G10 is the highest yielding genotype. Moreover, based on the genotypes ranking G10 show the best for yield–trait combinations profile. Based on the AMMI-2 bi-plot and weighted average absolute scores G1, G3, G4 and G14 are the stable genotypes. Based on the multi-trait genotype-ideotype distance index (MGIDI) G4 and G13 are the selected genotypes considering all traits indicating due attention is required to these genotypes. This study identified G10 as the most desirable genotype and this genotype should be verified to be used as a check, in the absence of released deber variety.