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<p>Tomato (<i>Solanum lycopersicum</i> L.) is among the most widely cultivated vegetable crops, with genetic diversity influencing traits such as inflorescence architecture. While floral development is well studied, flowers arising from unusual positions are rare and scientifically intriguing. Here we report a novel floral phenotype in indeterminate tomato under polyhouse conditions i.e., Extended Sympodial Growth (ESG). ESG involves reversion of the terminal flower to a vegetative shoot that resumes growth and produces additional inflorescences, altering the typical sympodial rhythm. ESG was consistently observed over six seasons in the var. NS-4266. Notably, this phenotype did not occur in field trials of NS-4266, suggesting polyhouse-specific expression influenced by controlled conditions. This first report of ESG highlights meristem plasticity in tomato and opens opportunities for exploring alternative growth habits and yield-enhancing traits.</p>

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Unconventional Floral Development in Tomato: First Report of Extended Sympodial Growth under Protected Conditions

  • 期刊论文

  • 发表日期：

    2026年3月30日

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  • Hare Krishna,
  • Shubham Kumar Tiwari,
  • Manoj Kumar Singh,
  • Swati Sharma,
  • Rajeev Kumar,
  • Shreya Panwar,
  • S. K. Singh,
  • Anant Bahadur,
  • Rajesh Kumar

摘要

Tomato (Solanum lycopersicum L.) is among the most widely cultivated vegetable crops, with genetic diversity influencing traits such as inflorescence architecture. While floral development is well studied, flowers arising from unusual positions are rare and scientifically intriguing. Here we report a novel floral phenotype in indeterminate tomato under polyhouse conditions i.e., Extended Sympodial Growth (ESG). ESG involves reversion of the terminal flower to a vegetative shoot that resumes growth and produces additional inflorescences, altering the typical sympodial rhythm. ESG was consistently observed over six seasons in the var. NS-4266. Notably, this phenotype did not occur in field trials of NS-4266, suggesting polyhouse-specific expression influenced by controlled conditions. This first report of ESG highlights meristem plasticity in tomato and opens opportunities for exploring alternative growth habits and yield-enhancing traits.