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<p>Improving seed-filling rates result in higher grain yield in winter wheat. However, the deficit and unpredictable precipitation results in lower seed-filling rates in winter wheat. We studied the effect of traditional flat planting method (F) and ridge-furrow rain harvesting planting method (R) and novel plant growth regulator (mixture of 27% ethephon + 3% diethyl aminoethyl hexanoate (DA-6) concentrations i.e., 0 (Y<sub>0</sub>), 200 (Y<sub>200</sub>), 400 (Y<sub>400</sub>), and 600&#xa0;mL&#xa0;ha<sup>–1</sup> (Y<sub>600</sub>) on photosynthetic efficiency, hormonal changes, and its relation with seed-filling in winter wheat under mobile waterproof shed. Planting methods and novel plant growth regulator application significantly affected grain yield, hormones content, and seed-filling in winter wheat. Ridge-furrow rain harvesting planting method significantly improved soil moisture content (%), shoot dry matter per plant, chlorophyll content, canopy apparent photosynthesis and spike weight compared with the traditional flat planting method. Furthermore, ridge-furrow rain harvesting planting method significantly improved grain yield, seed-filling characteristics, abscisic acid (ABA) and zeatin (Z) + zeatin riboside (ZR) content and reduced gibberellic acid (GAs) content in superior and in inferior seeds in winter wheat. Optimum (Y<sub>400</sub>) novel plant growth regulator application significantly enhanced photosynthetic efficiency, seed-filling characteristics, and grain yield in winter wheat. The ABA and Z + ZR contents were significantly positively correlated with the final seed weight, maximum seed-filling rate and mean seed-filling rate in superior and in inferior seeds in winter wheat. In conclusion, ridge-furrow rain harvesting planting method and 400&#xa0;mL&#xa0;ha<sup>–1</sup> novel plant growth regulator application resulted in maximum grain yield in winter wheat by improving the photosynthesis and seed-filling characteristics.</p>

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Planting Methods and Novel Plant Growth Regulator Application Strategies to Improve Hormones Content, Seed-filling and Yield in Winter Wheat

  • 期刊论文

  • 发表日期：

    2025年5月2日

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  • Irshad Ahmad,
  • Tatiana Minkina,
  • Saglara Mandzhieva,
  • Vishnu D. Rajput,
  • Svetlana Sushkova,
  • Khushnuma Ikram

摘要

Improving seed-filling rates result in higher grain yield in winter wheat. However, the deficit and unpredictable precipitation results in lower seed-filling rates in winter wheat. We studied the effect of traditional flat planting method (F) and ridge-furrow rain harvesting planting method (R) and novel plant growth regulator (mixture of 27% ethephon + 3% diethyl aminoethyl hexanoate (DA-6) concentrations i.e., 0 (Y0), 200 (Y200), 400 (Y400), and 600 mL ha–1 (Y600) on photosynthetic efficiency, hormonal changes, and its relation with seed-filling in winter wheat under mobile waterproof shed. Planting methods and novel plant growth regulator application significantly affected grain yield, hormones content, and seed-filling in winter wheat. Ridge-furrow rain harvesting planting method significantly improved soil moisture content (%), shoot dry matter per plant, chlorophyll content, canopy apparent photosynthesis and spike weight compared with the traditional flat planting method. Furthermore, ridge-furrow rain harvesting planting method significantly improved grain yield, seed-filling characteristics, abscisic acid (ABA) and zeatin (Z) + zeatin riboside (ZR) content and reduced gibberellic acid (GAs) content in superior and in inferior seeds in winter wheat. Optimum (Y400) novel plant growth regulator application significantly enhanced photosynthetic efficiency, seed-filling characteristics, and grain yield in winter wheat. The ABA and Z + ZR contents were significantly positively correlated with the final seed weight, maximum seed-filling rate and mean seed-filling rate in superior and in inferior seeds in winter wheat. In conclusion, ridge-furrow rain harvesting planting method and 400 mL ha–1 novel plant growth regulator application resulted in maximum grain yield in winter wheat by improving the photosynthesis and seed-filling characteristics.