Abstract
Onion productivity in India is strongly influenced by genotype × environment interaction (GEI), complicating the identification of stable and high-yielding cultivars. Nineteen onion genotypes were evaluated in multi-environment trials across six diverse locations during two consecutive kharif seasons (2023–24), with locations treated as six distinct environments (E1-E6). Combined ANOVA revealed significant effects of genotypes, environments, and their interactions, indicating substantial GEI. AMMI analysis identified RO-1771 (G15), RO-1768 (G13), and RO-1774 (G17) as the most stable and high-yielding genotypes, while Junagadh (E3) was the most representative and discriminating environment. The first two principal components of the GGE biplot explained 83.86% of total GEI variation, efficiently capturing interaction patterns. Among the genotypes, ‘Bhima Dark Red’ (G18) consistently showed superior yield and stability, followed by RO-1768 and RO-1774, which also demonstrated broad adaptability. Junagadh was identified as an ideal site for both cultivation and varietal testing. Collectively, the GGE and AMMI analyses revealed that Bhima Dark Red (G18), RO-1768 (G13), and RO-1774 (G17) combined high yield with stability across multiple environments. These findings provide valuable guidance for onion breeding programs and support the development of cultivars adapted to diverse Indian agro-climatic conditions.
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Acknowledgements
The authors sincerely acknowledge networking centers of AINRPOG, ICAR-DOGR for their support and technical inputs. This work was financially supported by Indian Council of Agricultural Research, New Delhi.
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Authors gratefully thanks to the networking centers of All India Network Research Project on Onion and Garlic [AINRPOG], ICAR-Directorate of Onion and Garlic Research, Pune for their support and technical inputs. This work was financially supported by Indian Council of Agricultural Research, New Delhi.
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Author [Amar Jeet Gupta] contributed to the study conception and design. Material preparation and data collection were performed by [Amar Jeet Gupta], [Vijay Mahajan] and [Anil Khar]. The manuscript was prepared by [Amar Jeet Gupta] and [Kavya V. Aribenchi]. Analysis of data and interpretation was performed by [Amar Jeet Gupta] and [Kavya V. Aribenchi] and [Supriya Kaldate]. Manuscript edition and finalization were performed by [Amar Jeet Gupta], [Hem Raj Bhandari], [Pranjali A. Gedam], [Yogesh P. Khade], [Rajiv B. Kale] and [Vijay Mahajan] and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Gupta, A.J., Khar, A., Aribenchi, K.V. et al. Assessment of stability and yield performance of onion (Allium cepa L.) genotypes across diverse Indian environments.
Sci Rep (2025). https://doi.org/10.1038/s41598-025-30152-9
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DOI: https://doi.org/10.1038/s41598-025-30152-9
Keywords
- Onion
- GGE biplot
- AMMI
- Stability
- GEI
- Bulb yield
Source: Ecology - nature.com
