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<p>Flax (<i>Linum usitatissimum</i> L.) is a versatile crop used for fiber, fuel, pharmaceuticals, and animal feed. It is divided into oil flax (also known as linseed) and fiber flax (used in textiles). Understanding the anatomical structures of flax is essential for enhancing fiber production and developing new cultivars. In this study, stem cross-sections from ten genotypes were examined using a Carl Zeiss Axioskop 40 optical microscope at 10x magnification. Eleven anatomical features were analyzed, including average fiber cell area (µm<sup>2</sup>), the number of fiber cells, and total fiber area (µm<sup>2</sup>). Stem area, total fiber area, and fiber-to-stem ratios ranged from 1.302 to 2.846&#xa0;mm<sup>2</sup>, 0.045 to 0.202&#xa0;mm<sup>2</sup>, and 0.03 to 0.09, respectively. Based on stem anatomical features, genotypes BD-7145, BARI Tishi-1, and Canada exhibited their potential for high fiber yield. Principal component analysis (PCA) explained 80.96% of the total variance. The phenotypic coefficient of variation (PCV%) was higher than the genotypic coefficient of variation (GCV%) for all traits, with a narrow difference indicating limited environmental influence. High heritability (&gt; 75%) across various traits highlights the success of selection-based improvement. The Canada genotype was identified as high-yielding for fiber, while China, Vietnam, and BD-10701 were low-yielding and classified as oil-producing genotypes. Further agronomic trials are necessary to confirm their performance.</p>

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Stem anatomical variation and fiber-yielding potential of flax (Linum usitatissimum L.) genotypes

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月16日

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  • Most. Morsada Khatun,
  • Md. Riyadh Arefin,
  • A. K. M. Golam Sarwar

摘要

Flax (Linum usitatissimum L.) is a versatile crop used for fiber, fuel, pharmaceuticals, and animal feed. It is divided into oil flax (also known as linseed) and fiber flax (used in textiles). Understanding the anatomical structures of flax is essential for enhancing fiber production and developing new cultivars. In this study, stem cross-sections from ten genotypes were examined using a Carl Zeiss Axioskop 40 optical microscope at 10x magnification. Eleven anatomical features were analyzed, including average fiber cell area (µm2), the number of fiber cells, and total fiber area (µm2). Stem area, total fiber area, and fiber-to-stem ratios ranged from 1.302 to 2.846 mm2, 0.045 to 0.202 mm2, and 0.03 to 0.09, respectively. Based on stem anatomical features, genotypes BD-7145, BARI Tishi-1, and Canada exhibited their potential for high fiber yield. Principal component analysis (PCA) explained 80.96% of the total variance. The phenotypic coefficient of variation (PCV%) was higher than the genotypic coefficient of variation (GCV%) for all traits, with a narrow difference indicating limited environmental influence. High heritability (> 75%) across various traits highlights the success of selection-based improvement. The Canada genotype was identified as high-yielding for fiber, while China, Vietnam, and BD-10701 were low-yielding and classified as oil-producing genotypes. Further agronomic trials are necessary to confirm their performance.