土壌乾燥処理がビワ幼樹の葉と根のソルビトール含量ならびに細胞核の変化に及ぼす影響

DOI NDLデジタルコレクション 日本農学文献記事索引 Web Site Web Site 被引用文献5件 参考文献17件

書誌事項

タイトル別名
  • Effects of Water Stress on Sorbitol Production and Anatomical Changes in the Nuclei of Leaf and Root Cells of Young Loquat Trees

この論文をさがす

抄録

The effects of water stress on the production of sorbitol in the leaves and roots of one-year-old grafted loquat trees were investigated. Concurrently anatomical changes in the nuclei of the leaves and the root apical meristem were followed by staining with 4'-6-diamidino-2-phenylindole (DAPI) and observing the results by fluorescence microscopy. The degree of water stress was graded into three levels: a) unstressed plots (control), b) moderately stressed plots (m-plots, no irrigation period for 20 days), and c) severely stressed plots (s-plots, no irrigation period for 25 days). The degree of water stress was estimated by the water saturated deficiency (WSD) of the leaves. With an increase in WSD, the sorbitol content in the leaves and roots increased, the accumulation occurring in the roots. Although WSD for the s-plots was higher than that for the m-plots, there was no significant difference in sorbitol content in leaves and roots between the two treatments. After recovery from water stress, the sorbitol content decreased gradually in roots and leaves. Leaves of m-plots abscised little after irrigation was resumed, whereas leaves of s-plots abscised severely; only a few trees died. New roots developed in control plants, but not in stressed-plants. Water stress resulted in an acceleration of nuclear degradation and a decrease in starch accumulation in the mesophyll parenchyma and in the apical meristem from the root tip to 2-3 mm.

収録刊行物

  • 園芸学会雑誌

    園芸学会雑誌 72 (5), 359-365, 2003

    一般社団法人　園芸学会

被引用文献 (5)*注記

もっと見る

参考文献 (17)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ