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<p>The study explores the impact of different colored polytunnels on the growth, yield, and quality of strawberry (<i>Fragaria</i> <i>×</i> <i>ananassa</i>) cv. ‘Camarosa’, a&#xa0;commercially important cultivar. Light-spectrum modification under varied polytunnel colors significantly influenced vegetative and reproductive traits. The red polytunnel (light intensity: 4700–4900 lx) recorded the highest values across key parameters, including fruit yield per plant (433.80 g), fruit volume (14.89 cc), flower count (25.07), and chlorophyll content (Chl&#xa0;<i>a</i>: 1.25 mg/g; Chl&#xa0;<i>b</i>: 2.29 mg/g). Notably, blue and white polytunnels also showed a&#xa0;strong performance, particularly in leaf number (90&#xa0;days after planting [DAP]: 20.36 and 20.13) and plant spread (60&#xa0;DAP: 27.68 and 26.14 cm), indicating their role in enhanced vegetative development. Principal component analysis and correlation analysis revealed that white and blue treatments clustered closely with critical growth and yield variables. Furthermore, significant positive correlations were observed between biochemical parameters such as anthocyanin content (highest under red polytunnel: 57.80 mg/100 g) and total phenols (up to 0.175 mg/g under blue) with overall yield, highlighting the integral relationship between fruit quality and productivity. This study underscores the potential of light manipulation through colored polytunnels as a&#xa0;practical approach to optimize strawberry cultivation.</p>

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Red and Blue Light-Spectrum Modulation in Low Polysheet Tunnels Intensifies Growth, Yield, and Quality of Strawberry cv. ‘Camarosa’: A Comprehensive Study Using PCA, Path Analysis, and Correlation

  • 期刊论文

  • 发表日期：

    2025年8月19日

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  • Aditi Thakur,
  • Amit Kotiyal,
  • Sunny Sharma,
  • Joshi Thoudam

摘要

The study explores the impact of different colored polytunnels on the growth, yield, and quality of strawberry (Fragaria × ananassa) cv. ‘Camarosa’, a commercially important cultivar. Light-spectrum modification under varied polytunnel colors significantly influenced vegetative and reproductive traits. The red polytunnel (light intensity: 4700–4900 lx) recorded the highest values across key parameters, including fruit yield per plant (433.80 g), fruit volume (14.89 cc), flower count (25.07), and chlorophyll content (Chl a: 1.25 mg/g; Chl b: 2.29 mg/g). Notably, blue and white polytunnels also showed a strong performance, particularly in leaf number (90 days after planting [DAP]: 20.36 and 20.13) and plant spread (60 DAP: 27.68 and 26.14 cm), indicating their role in enhanced vegetative development. Principal component analysis and correlation analysis revealed that white and blue treatments clustered closely with critical growth and yield variables. Furthermore, significant positive correlations were observed between biochemical parameters such as anthocyanin content (highest under red polytunnel: 57.80 mg/100 g) and total phenols (up to 0.175 mg/g under blue) with overall yield, highlighting the integral relationship between fruit quality and productivity. This study underscores the potential of light manipulation through colored polytunnels as a practical approach to optimize strawberry cultivation.