%0 Journal Article
%A Xiaopeng MU
%A Xiaoyan MOU
%A Xinliang QI
%A Jing WANG
%A Yu YANG
%A Jiancheng ZHANG
%A Pengfei WANG
%T Effects of Different Growth Retardant Treatments on Rooting of <i>Prunus humilis</i> Rhizome Cuttings
%D 2025
%R 10.7525/j.issn.1673-5102.2025.01.010
%J Bulletin of Botanical Research
%P 88-97
%V 45
%N 1
%X <p>To explore the effect of growth retardants on the rooting of <i>Prunus humili</i> rhizomes cuttings， ‘Jinou 1’ rhizome cuttings were used as materials. Optimal concentrations of growth retardants S<sub>3307</sub> （uniconazole）， PP<sub>333</sub> （paclobutrazol）， and DPC （dikegulac） were screened by measuring rooting rate， germination rate， morphological indices， nutrients， oxidative enzyme activities， endogenous hormones during the rooting process of rhizome cutting. The results showed that the retardants S<sub>3307</sub>（50 mg?L<sup>-1</sup>）， PP<sub>333</sub>（100 mg?L<sup>-1</sup>）， and DPC（100 mg?L<sup>-1</sup>） significantly increased the rooting rate of <i>P. humilis</i> rhizome from the control of 22.16% to 78.02%， 57.10%， and 56.70%， respectively. During the rooting process of rhizome cuttings， growth retardant treatments also increased the contents of soluble sugars， starch， soluble proteins， and the activity of POD， SOD and CAT. In addition， the retardant treatment promoted the content of IAA and expression levels of IAA synthesis genes <i>ChTAA1</i>， <i>ChTAA2</i> and <i>ChYUC1</i> in rhizome cuttings and inhibited the synthesis of GA<sub>3</sub>， ABA， and ZT， which was favorable for the rooting of <i>P. humilis</i> rhizome cuttings. This experiment provided a theoretical basis for the propagation of <i>P. humilis</i> rhizome cuttings.</p>
%U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2025.01.010