{"title":"Maize Root Extension: Effects of Indol-3yl-acetic and Gibberellic acids","authors":"Christine Wieser, Paul-Emile Pilet","doi":"10.1016/S0044-328X(84)80007-0","DOIUrl":null,"url":null,"abstract":"<div><p>Extension of primary roots of <em>Zea mays</em> (cv. LG11) was analysed by a method of upward bending. The characteristics of extension are discussed. IAA pretreatment at several concentrations, enhanced instantaneous, total, plastic and elastic deformations, with an optimal effect for the 10<sup>-6</sup>M concentration. All types of deformations were decreased by GA3 pretreatment at several concentrations, chiefly the plastic one. No peak was observed in the response to GA3. The timescale of rheological analysis, for roots treated with IAA (10<sup>-6</sup>M) or GA3 (5 • 10<sup>-7</sup> M), showed that the effect of these two hormones is rapid.</p></div>","PeriodicalId":23797,"journal":{"name":"Zeitschrift für Pflanzenphysiologie","volume":"113 3","pages":"Pages 263-270"},"PeriodicalIF":0.0000,"publicationDate":"1984-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0044-328X(84)80007-0","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Zeitschrift für Pflanzenphysiologie","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0044328X84800070","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
Extension of primary roots of Zea mays (cv. LG11) was analysed by a method of upward bending. The characteristics of extension are discussed. IAA pretreatment at several concentrations, enhanced instantaneous, total, plastic and elastic deformations, with an optimal effect for the 10-6M concentration. All types of deformations were decreased by GA3 pretreatment at several concentrations, chiefly the plastic one. No peak was observed in the response to GA3. The timescale of rheological analysis, for roots treated with IAA (10-6M) or GA3 (5 • 10-7 M), showed that the effect of these two hormones is rapid.
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