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Abstract <p>The content of four groups of phytohormones was studied—auxins, cytokinins, and abscisic acid by the method of solid-phase enzyme immunoassay and gibberellins by the method of biotesting in stolons and tubers forming during the vegetation period of <i>Solanum tuberosum</i> grown in soil culture under vegetation conditions. The prevalence of gibberellins was revealed during the period of stolon growth. At the beginning of the initiation of tuber formation, ABA increases, which can contribute to the cessation of stolon growth, but the content of IAA and zeatin remains high. Stolons of large tubers contained more GA<sub>3</sub> and IAA, but less ABA, and had a greater number of vessels in the vascular bundle. The prevalence of auxins and a decrease in the ABA content in large tubers compared to small ones were established. An increase in the mass of large tubers from a plant, as well as the thickness of their phellem (cork), the diameter of the cells of the perimedullary zone, and the size of the cells of the cortex, compared to small tubers, was shown against the background of a higher IAA/ABA ratio.</p>

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Hormonal Status of Stolons and Tubers Formed during the Vegetation of Potato Plants (Solanum tuberosum L.)

  • 期刊论文

  • 发表日期：

    2025年6月9日

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  • T. I. Puzina,
  • I. Yu. Makeeva,
  • I. G. Kirillova

摘要

Abstract

The content of four groups of phytohormones was studied—auxins, cytokinins, and abscisic acid by the method of solid-phase enzyme immunoassay and gibberellins by the method of biotesting in stolons and tubers forming during the vegetation period of Solanum tuberosum grown in soil culture under vegetation conditions. The prevalence of gibberellins was revealed during the period of stolon growth. At the beginning of the initiation of tuber formation, ABA increases, which can contribute to the cessation of stolon growth, but the content of IAA and zeatin remains high. Stolons of large tubers contained more GA3 and IAA, but less ABA, and had a greater number of vessels in the vascular bundle. The prevalence of auxins and a decrease in the ABA content in large tubers compared to small ones were established. An increase in the mass of large tubers from a plant, as well as the thickness of their phellem (cork), the diameter of the cells of the perimedullary zone, and the size of the cells of the cortex, compared to small tubers, was shown against the background of a higher IAA/ABA ratio.