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<p>This study was conducted to suppress plant overgrowth through high-concentration KCl treatment in a plant factory with artificial lighting to improve cultivation methods and enhance drought stress tolerance in tomatoes. The control plants were grown in commercial nursery greenhouses and plant factories with artificial lighting, and the plant growth regulator treated plants were grown using the growth regulator “Binnari.” To check for improvement in drought stress tolerance, the plants were not irrigated for 3 d after the maximum water capacity, and chlorophyll fluorescence analysis was performed. As a result of the high-salinity treatment, scion and rootstock overgrowth was inhibited. Additionally, compactness and dry matter content were higher in the high-salinity treatment than in the control, with the EC10 treatment showing the highest values. Unlike the untreated plants after drought stress treatment, the high-salinity treatment did not show any abnormal deformation in the J-P section of the OJIP graph, and the post-chlorophyll fluorescence response was relatively better in the high-salinity treatment than in the untreated plants after desiccation. These results suggest that high-salinity KCl can be used as an alternative to growth regulators in PFAL cultivation to improve drought stress tolerance.</p>

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Effect of high concentration of KCl treatment on tomato seedling for overgrowth suppression and drought stress tolerance enhancement in plant factory with artificial lighting

  • 期刊论文

  • 发表日期：

    2025年5月12日

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  • Youngho Kim,
  • Hwichan Yang,
  • Yunhyeong Bae,
  • Soonjae Hyeon,
  • Minseong Choi,
  • Ngoc-Thang Vu,
  • Dongcheol Jang

摘要

This study was conducted to suppress plant overgrowth through high-concentration KCl treatment in a plant factory with artificial lighting to improve cultivation methods and enhance drought stress tolerance in tomatoes. The control plants were grown in commercial nursery greenhouses and plant factories with artificial lighting, and the plant growth regulator treated plants were grown using the growth regulator “Binnari.” To check for improvement in drought stress tolerance, the plants were not irrigated for 3 d after the maximum water capacity, and chlorophyll fluorescence analysis was performed. As a result of the high-salinity treatment, scion and rootstock overgrowth was inhibited. Additionally, compactness and dry matter content were higher in the high-salinity treatment than in the control, with the EC10 treatment showing the highest values. Unlike the untreated plants after drought stress treatment, the high-salinity treatment did not show any abnormal deformation in the J-P section of the OJIP graph, and the post-chlorophyll fluorescence response was relatively better in the high-salinity treatment than in the untreated plants after desiccation. These results suggest that high-salinity KCl can be used as an alternative to growth regulators in PFAL cultivation to improve drought stress tolerance.