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<p>To enhance the productivity of Indian tomatoes, this study aimed to investigate genetic variability and trait relationships among six tomato genotypes. Field trials were conducted during the <i>Rabi</i> season (2022-23) at the Regional Research and Technology Transfer Station, Bhawanipatna, Kalahandi, Odisha. The experiment was carried out in a Randomised Block Design with four replications. The study aimed to evaluate the yield potential of Bhubaneswar tomato lines for future breeding and assess genetic diversity within the western undulating agroecosystem, considering interactions among growth, yield and quality traits. Genetic diversity among tomato genotypes in the western undulating agroecosystem was assessed, considering the interaction of growth, yield and quality traits. The yield of tomato fruit ranged from 168.61 to 349.58q ha<sup>-1</sup> (mean: 256.82q ha<sup>-1</sup>) and demonstrated high broad-sense heritability (H<sup>2</sup>bs​=81.80%). Significant environmental variation (PCV &gt; GCV) and substantial genetic polymorphism were observed. Cluster analysis grouped genotypes, with BT-02 and BT-422-2 exhibiting close similarity. Principal component analysis identified the first component as the major source of variation (41.50%). Genotypes BT-02, BT-10, BT-19-1-1 and BT-202-1 demonstrated promising performance across multiple traits. Notably, utilising BT-02 and BT-202-1, originating from distinct clusters, as parents in breeding programs is crucial for maximising genetic diversity and enhancing selection efficiency.</p>

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Phenotypic and genotypic variations among tomato (Solanum lycopersicum L.) cultivars within the ecologically sensitive Western undulating agroecosystem of India

  • 期刊论文

  • 发表日期：

    2025年8月11日

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  • Bibhuti Bhusan Sahoo,
  • Anita Mohanty,
  • Bhabani Shankar Nayak,
  • Debasis Behera,
  • Madhumita Dasgupta,
  • Manas Ranjan Sahoo,
  • Niranjan Chinara,
  • Nityamanjari Mishra,
  • Pradyumna Tripathy,
  • Purandar Mandal,
  • Rajeeb Lochan Maharana,
  • Subhasree Das

摘要

To enhance the productivity of Indian tomatoes, this study aimed to investigate genetic variability and trait relationships among six tomato genotypes. Field trials were conducted during the Rabi season (2022-23) at the Regional Research and Technology Transfer Station, Bhawanipatna, Kalahandi, Odisha. The experiment was carried out in a Randomised Block Design with four replications. The study aimed to evaluate the yield potential of Bhubaneswar tomato lines for future breeding and assess genetic diversity within the western undulating agroecosystem, considering interactions among growth, yield and quality traits. Genetic diversity among tomato genotypes in the western undulating agroecosystem was assessed, considering the interaction of growth, yield and quality traits. The yield of tomato fruit ranged from 168.61 to 349.58q ha-1 (mean: 256.82q ha-1) and demonstrated high broad-sense heritability (H2bs​=81.80%). Significant environmental variation (PCV > GCV) and substantial genetic polymorphism were observed. Cluster analysis grouped genotypes, with BT-02 and BT-422-2 exhibiting close similarity. Principal component analysis identified the first component as the major source of variation (41.50%). Genotypes BT-02, BT-10, BT-19-1-1 and BT-202-1 demonstrated promising performance across multiple traits. Notably, utilising BT-02 and BT-202-1, originating from distinct clusters, as parents in breeding programs is crucial for maximising genetic diversity and enhancing selection efficiency.