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植物研究 ›› 2026, Vol. 46 ›› Issue (5): 938-947.doi: 10.7525/j.issn.1673-5102.2026.05.014

• 研究论文 • 上一篇    下一篇

基质浇灌生长延缓剂对欧李嫩枝扦插生根的影响

王晓燕, 王浩男, 何倩倩, 贾璐婷, 张帅, 王鹏飞()   

  1. 山西农业大学园艺学院,太谷 030801
  • 收稿日期:2026-04-17 出版日期:2026-08-28 发布日期:2026-10-10
  • 通讯作者: 王鹏飞 E-mail:pengfeiwang2004@163.com
  • 作者简介:王晓燕(2001—),女,硕士研究生,主要从事果树种质资源开发与利用研究。
  • 基金资助:
    山西农业大学生物工程育种项目(YZGC108)

Effects of Substrate Irrigation with Growth Retardants on Rooting of Cerasus humilis Softwood Cuttings

Xiaoyan WANG, Haonan WANG, Qianqian HE, Luting JIA, Shuai ZHANG, Pengfei WANG()   

  1. College of Horticulture,Shanxi Agricultural University,Taigu 030801
  • Received:2026-04-17 Online:2026-08-28 Published:2026-10-10
  • Contact: Pengfei WANG E-mail:pengfeiwang2004@163.com

摘要:

为了探究基质浇灌不同生长延缓剂调控欧李(Cerasus humilis)嫩枝扦插生根的机制,本研究以‘农大6号’(‘Nongda No.6’)欧李半木质化新梢制作插穗,筛选适宜的调节剂浓度和浇灌时期,并分析最优处理插穗生根过程中营养物质和内源激素动态变化特征。结果表明:基质浇灌不同浓度的多效唑(paclobutrazol,PP333)和烯效唑(uniconazole,S3307)均能够提高生根率,其中100 mg⋅L-1多效唑处理生根率最高,达60.83%,显著高于对照;50 mg⋅L-1烯效唑处理的生根率、插穗存活率与根系发育等综合表现最优,适宜在欧李嫩枝扦插中应用。扦插后7 d、14 d与21 d分别浇灌50 mg⋅L-1 S3307,发现14 d浇灌处理(S-14 d)的生根率最高(57.22%)。S-14 d处理插穗茎段中可溶性糖、淀粉与可溶性蛋白含量在生根过程中积累量显著高于对照,形成了较高的碳氮比,提升了生根速度和根系质量;同时,S-14 d处理提高插穗中生长素(indole-3-acetic acid,IAA)和玉米素(zeatin,ZT)含量,抑制赤霉素(gibberellic acid,GA3)和脱落酸(abscisic acid,ABA)的积累,优化激素平衡,有利于插穗生根。综上,扦插后14 d基质浇灌50 mg⋅L-1 S3307可通过调控营养物质代谢和内源激素水平,有效促进欧李嫩枝扦插生根。

关键词: 欧李, 嫩枝扦插, 生长延缓剂, 生根, 营养物质, 内源激素

Abstract:

To investigate the mechanism of different growth retardants applied through substrate drenching in regulating the rooting of Cerasus humilis softwood cuttings, semi-lignified shoots of C. humilis ‘Nongda No.6’ were used as cuttings in this study. Suitable concentrations and application timings of plant growth regulators were screened, and the dynamic changes of nutrients and endogenous hormones during the rooting process were analyzed under an optimal treatment. The results demonstrated that substrate drenching with different concentrations of paclobutrazol(PP333) and uniconazole(S3307) both promoted rooting. Among them, the treatment with 100 mg⋅L-1 PP333 yielded the highest rooting rate(60.83%), which was significantly higher than that of the control. Moreover, the treatment with 50 mg⋅L-1 S3307 exhibited the optimal comprehensive performance in terms of rooting rate, cutting survival, and root system development, indicating its suitability for the softwood cutting propagation of C. humilis. When 50 mg⋅L-1 S3307 was applied at 7, 14, and 21 days after cutting, the highest rooting rate (57.22%) was observed in 14-d treatment (S-14 d). During the rooting process, the S-14 d treatment significantly enhanced the accumulation of soluble sugars, starch, and soluble proteins in the stem segments of cuttings, resulting in a higher carbon-to-nitrogen ratio that accelerated rooting speed and enhanced root quality. Meanwhile, the S-14 d treatment increased the contents of indole-3-acetic acid(IAA) and zeatin (ZT), inhibited the accumulation of gibberellic acid(GA3) and abscisic acid(ABA), which optimized the hormone balance to facilitate cutting rooting. In conclusion, substrate drenching with 50 mg⋅L-1 S3307 at 14 days after cutting effectively promoted the rooting of C. humilis softwood cuttings by regulating nutrient metabolism and endogenous hormone levels.

Key words: Cerasus humilis, softwood cutting, growth retardants, rooting, nutrients, endogenous hormones

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