Estimates of Genetic Variability and Boxplot Analyses in F2 Populations of Rice (Oryza sativa L.) for Yield-Related Traits

Date Received: Nov 23, 2024

Date Accepted: Mar 10, 2026

Date Published: Mar 31, 2026

DOI: https://doi.org/10.31817/vjas.2026.9.1.06

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Issue: Vol. 9 No. 1 (2026): Vietnam Journal of Agricultural Sciences

Section:

ENGINEERING AND TECHNOLOGY

How to Cite:

Rani, R., G., . R., Hasan, S., U., A., & Aminul, I. (2026). Estimates of Genetic Variability and Boxplot Analyses in F2 Populations of Rice (Oryza sativa L.) for Yield-Related Traits. Vietnam Journal of Agricultural Sciences, 9(1), 2846–2855. https://doi.org/10.31817/vjas.2026.9.1.06

Estimates of Genetic Variability and Boxplot Analyses in F2 Populations of Rice (Oryza sativa L.) for Yield-Related Traits

Shuma Rani Ray 1 , M. G. Rasul 1 , M. M. Hasan Saikat 1 , J. U. Ahmed 1   , A. K. M. Aminul Islam (*) 1

  • Corresponding author: [email protected]
  • 1 Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh

    • Keywords

    GVC, PCV, genetic gain, transgressive segregation, boxplot analysis, grain yield

    Abstract


    The present research was carried out to study genetic variability in 5×5 half diallel F2 populations of boro rice. The F2 populations of 10 bi-parental crosses, viz. P1 × P2, P1 × P3, P1 × P4, P1 × P5, P2 × P3, P2 × P4, P2 × P5, P3 × P4, P3 × P5, and P4 × P5, were evaluated, along with their parents, for grain yield and related characters. Significant variance revealed a wide range of genetic variability among the segregating progenies and parental genotypes for all the studied traits except grain breadth. The genotypic coefficient of variation (GCV) was smaller than the phenotypic coefficient of variation (PCV) for all the traits except the grain length-breadth ratio. Grain length exhibited high heritability (96.021%) and high genetic advance (22.137%), followed by the grain length-to-breadth ratio (95.308% and 40.7%), and 1000-grain weight (71.96% and 25.32%), respectively. Broader genetic variability for the genotypes was revealed based on boxplot analyses. The F2 family P3×P4 showed the maximum transgressive segregation for the number filled grains per panicle and 1000-grain weight followed by P3×P5.

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