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<p>Underutilized fruit crops, known for their exceptional nutritional value and resilience to harsh environmental conditions, play a vital role in sustaining local populations with minimal agricultural input. One such underutilized fruit crop in India is <i>Aegle marmelos</i> (L.) Correa, commonly known as Bael. While extensive research has been conducted on the morpho-pomological traits and genetic diversity of Bael in northern India, research on its southern genotypes remains limited, often constrained by a narrow sampling range. Understanding the genetic background and distribution of a species is crucial for effective conservation efforts. However, prior to this study, no comprehensive genetic diversity assessment had been undertaken for Bael in southern India. This pioneering research fills that gap by employing a robust sampling strategy, collecting genotypes from diverse locations across Karnataka, Kerala, Tamil Nadu, Uttar Pradesh, and West Bengal. Using 18 Inter Simple Sequence Repeat (ISSR) markers, this study successfully analyzed the genetic relationships among these Bael populations. The findings underscore the effectiveness of ISSR markers in evaluating Bael germplasm and reveal significant genetic diversity among the studied genotypes. Notably, analysis of molecular variance (AMOVA) demonstrated that an overwhelming 93% of the genetic variation exists within populations, while only 7% is attributed to differences between populations. Additionally, Principal Component Analysis (PCA) highlighted that the first three components accounted for 43% of the total variation. These findings highlight the substantial genetic diversity present in the Bael genotypes studied, identifying valuable germplasm with potential for varietal development and conservation efforts. Future research should incorporate morpho-pomological and biochemical traits to enhance plant breeding programs, particularly for Bael germplasm from Southern India, where further exploration could yield significant contributions to the conservation and improvement of this underutilized crop.</p>

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Preliminary assessment of genetic variability and germplasm potential of Aegle marmelos (L.) correa using inter simple sequence repeat (ISSR) markers in southern plains of India for genetic improvement and conservation strategies

  • 期刊论文

  • 发表日期：

    2025年6月2日

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  • Ragul Rengarajan,
  • Devanathan Krishnamoorthy,
  • Kamasamudra N. Prabhu,
  • Daya N. Mani,
  • Ashutosh K. Shukla,
  • Velusamy Sundaresan

摘要

Underutilized fruit crops, known for their exceptional nutritional value and resilience to harsh environmental conditions, play a vital role in sustaining local populations with minimal agricultural input. One such underutilized fruit crop in India is Aegle marmelos (L.) Correa, commonly known as Bael. While extensive research has been conducted on the morpho-pomological traits and genetic diversity of Bael in northern India, research on its southern genotypes remains limited, often constrained by a narrow sampling range. Understanding the genetic background and distribution of a species is crucial for effective conservation efforts. However, prior to this study, no comprehensive genetic diversity assessment had been undertaken for Bael in southern India. This pioneering research fills that gap by employing a robust sampling strategy, collecting genotypes from diverse locations across Karnataka, Kerala, Tamil Nadu, Uttar Pradesh, and West Bengal. Using 18 Inter Simple Sequence Repeat (ISSR) markers, this study successfully analyzed the genetic relationships among these Bael populations. The findings underscore the effectiveness of ISSR markers in evaluating Bael germplasm and reveal significant genetic diversity among the studied genotypes. Notably, analysis of molecular variance (AMOVA) demonstrated that an overwhelming 93% of the genetic variation exists within populations, while only 7% is attributed to differences between populations. Additionally, Principal Component Analysis (PCA) highlighted that the first three components accounted for 43% of the total variation. These findings highlight the substantial genetic diversity present in the Bael genotypes studied, identifying valuable germplasm with potential for varietal development and conservation efforts. Future research should incorporate morpho-pomological and biochemical traits to enhance plant breeding programs, particularly for Bael germplasm from Southern India, where further exploration could yield significant contributions to the conservation and improvement of this underutilized crop.