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Morphological and phenotypical traits and their relationship with soybean grain yield: a multivariate analysis approach

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Abstract

An alternative to the conventional variance analysis to extract more adequate answers involving the relationship of morphological and phenological variables with grain yield is using multivariate statistical analysis. The objectives of the work were: (i) to group soybean cultivars, planted in two planting seasons, based on their similarity for morphological and phenological traits; (ii) evaluate the relationship between grain yield and morphological and phenological traits within and between cultivar groups. Principal component analysis, cluster, discriminant and canonical analysis were applied to data. For cultivars planted in the first planting season, the phenological cycle and the number of nodes emitted can help to select cultivars with higher yield potential only for a group of cultivars, in this case, cultivars classified in G1 and G5. For these groups, the lowest phenological cycle and node emission are traits related to high yield cultivars, reaching up to 95 bags ha−1. Cultivar groups with a shorter cycle and a larger plant stand are favored when planted in the second soybean planting season, showing a high potential for grain yield. For cultivars with yield potential ranging from 55 to 85 bags ha−1, a shorter cycle, lower height of insertion of the first pod and number of nodes should be chosen. Based on the results, it can be concluded that the application of principal components analysis, cluster and discriminant analysis allow a better understanding of the existing relationships between the morphological, phenological components, and yield of soybean.

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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

The authors would like to thank “Department of Research and Innovation and Department of Post-graduate at the University of Rio Verde” for supporting this project.

Funding

The authors declare and thank the Department of Research and Innovation and Department of Post-graduate at the University of Rio Verde for funding the entire project.

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Contributions

MFS: Writing and reviewing, methodology, formal analysis and vizualization; SVPF, VCSR, LTRTR: Investigation and data collecting; GBPB, CJBF, DVS and AJS: Conceptualization and investigation; JFM: Reviewing.

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Correspondence to Matheus de Freitas Souza.

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de Freitas Souza, M., de Paiva Filho, S.V., Rosa, V.C.S. et al. Morphological and phenotypical traits and their relationship with soybean grain yield: a multivariate analysis approach. Euphytica 220, 26 (2024). https://doi.org/10.1007/s10681-023-03283-1

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  • DOI: https://doi.org/10.1007/s10681-023-03283-1

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