Scholarlink

<p>Drought stress is a major abiotic factor that significantly reduces rice yield and productivity. This study analyzed the effectiveness of various seed priming techniques in enhancing drought stress tolerance in NIL-SUB1DRO line with an IR64 genetic background, known for its combined tolerance to flooding and drought stress. A complete randomized factorial design with five replications was employed, testing osmo-priming, halo priming, hydro priming, and non-primed control under drought and well-watered conditions. Drought stress markedly reduced plant height, shoot, and root biomass, leaf area, photosynthetic activities, and water relations traits (relative water content and leaf water potential) in non-primed seedlings, whereas seed priming treatments, especially osmo-priming and halo-priming treatments, significantly enhanced plant height, shoot, and root biomass, SPAD value, Fv/Fm, relative water content, leaf water potential, and photosynthetic rate in NIL-SUB1DRO1. Strong positive correlations between SPAD value, photosynthetic rate, Fv/Fm, biomass biomass-related traits. These findings suggest that seed osmo-priming is a promising strategy to enhance drought stress tolerance in NIL-SUB1DRO rice line.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Enhancing drought stress tolerance of NIL-SUB1DRO1 rice strain through different seed priming treatments

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年1月16日

查看全文
  • Alex Tamu,
  • Aquilino Lado Legge Wani,
  • Ibrahim Soe,
  • Emmanuel Odama,
  • Taiichiro Ookawa,
  • Abdelbagi M. Ismail,
  • Jui-Ichi Sakagami

摘要

Drought stress is a major abiotic factor that significantly reduces rice yield and productivity. This study analyzed the effectiveness of various seed priming techniques in enhancing drought stress tolerance in NIL-SUB1DRO line with an IR64 genetic background, known for its combined tolerance to flooding and drought stress. A complete randomized factorial design with five replications was employed, testing osmo-priming, halo priming, hydro priming, and non-primed control under drought and well-watered conditions. Drought stress markedly reduced plant height, shoot, and root biomass, leaf area, photosynthetic activities, and water relations traits (relative water content and leaf water potential) in non-primed seedlings, whereas seed priming treatments, especially osmo-priming and halo-priming treatments, significantly enhanced plant height, shoot, and root biomass, SPAD value, Fv/Fm, relative water content, leaf water potential, and photosynthetic rate in NIL-SUB1DRO1. Strong positive correlations between SPAD value, photosynthetic rate, Fv/Fm, biomass biomass-related traits. These findings suggest that seed osmo-priming is a promising strategy to enhance drought stress tolerance in NIL-SUB1DRO rice line.