Correlation, path, and lasso regression analysis of grain yield and some morphological characteristics in barley cultivars

Authors

  • Mahmut Açikgöz Van Yuzuncu Yil University, Institute of Science and Technology, Van, Türkiye
  • Suna Akkol Van Yuzuncu Yil University, Faculty of Agriculture, Department of Animal Science, Van, Türkiye.
  • Erol Oral Van Yuzuncu Yil University, Faculty of Agriculture, Department of Field Crops, Van, Türkiye
  • Tamer Eryiğit Van Yuzuncu Yil University, Gevas Vocational School, Department of Plant and Animal Production, Van, Türkiye

Keywords:

Barley, Correlation, Lasso regression, Path analysis

Abstract

This study evaluated 16 barley cultivars during the 2020-2021 winter season under irrigated conditions using correlation, path, and Lasso regression analyses. Correlation analysis revealed significant positive associations between grain yield and harvest index (HI), hectoliter weight (HLW), thousand-grain weight (TGW), grain filling rate per spike (GFRS), plant height (PH), number of sterile spikelets per spike (NSSS), and biological yield (BY). Path analysis demonstrated that HI and TGW exerted the strongest direct effects on grain yield. Lasso regression further identified HI, TGW, and BY as the most influential predictors, collectively explaining 79.28% of the yield variation. The consistency of HI and TGW across all statistical approaches highlights their reliability as selection criteria. These findings provide valuable insights for improving cultivar performance and optimizing barley breeding strategies under irrigated production systems.

Bangladesh J. Bot. 55(3): 471-476, 2026 (September)

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Published

2026-09-30

Issue

Vol. 55 No. 3 (2026)

Section

Articles

License

© Bangladesh Botanical Society

Authors are required to transfer the copyright of their articles to the journal. The Declaration form is available here http://www.bdbotsociety.org/journal/journal_pdf/declaration_form.pdf

How to Cite

Açikgöz, M., Akkol, S. ., Oral, E. ., & Eryiğit, T. . (2026). Correlation, path, and lasso regression analysis of grain yield and some morphological characteristics in barley cultivars. Bangladesh Journal of Botany, 55(3), 471-476. https://doi.org/10.3329/bjb.v55i3.93581