白花杜鹃与大鸳鸯锦杜鹃扦插生根影响因素及其解剖结构特征

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关键词：白花杜鹃（Rhododendron mucronatum）；大鸳鸯锦杜鹃（Rhododendron obtusum Dayuanyangjin）;扦插；生根指数；生根类型；解剖结构

中图分类号：S685.21；S603.7 文献标识码：A

文章编号：0439-8114（2026）02-0133-10

DOI：10.14088/j.cnki.issn0439-8114.2026.02.020 开放科学（资源服务）标识码（OSID）：口

Influencing factors and anatomical structure characteristics of rooting in cuttings of Rhododendron mucronatum and Rhododendron obtusum Dayuanyangjin

ZHENG Yong-run，LIUXiu-qun

（ColegeofHortiluredrestriesazoguralUstatioalKyLboatorpIovtio&Uiltiof Horticultural Crops，Wuhan430070，China）

Abstract：ToinvestigatetheoptimalconditionsfortherotingofRhododendroncutingsandtheiranatomicalstructurecharacteristics，semi-lignifiedcurent-yearbranchesofRhododendronmucronatumandRhododendronobtusumDayuanyangjinwereusedasmaterials.Theinfluencingfactorsofcutingrootingwereanalyzedfromsubstratetypes，plantgrowthregulatortypesandconcentrations. Aditionally，sectioning techniqueswereemployedtoobserveanatomicalstructuralchangesduring theroting process.Theresults showed thatthe optimal externalconditions forrooting in Rhododendron mucronatum were a peat：perlite mixture （3：1，W/V ，the same below）supplemented with 800 mg/L α -naphthaleneacetic acid（NAA）.For Rhododendron obtusum Dayuanyangjin，the optimal treatment was a peat： perlite mixture supplemented with 400mg/L indole- 3 -butyric acid（IBA） + NAAin a 1：1 ratio（V/V）.During theroting processof RhododendronmucronatumandRhododendronobtusumDayuanyangin，theoccurrence methodofadventitious rotsbelongedtotheiducedrotprimordiumroting type，andtheoccurrencesiteswerebothlocatedinthecambium，beloging to the cortex rooting type.

KeyWords：Rhododendronmucronatum；RhododendronobtusumDayuanyangjin；cuting；rootingindex;rotingtype；anatomical structure

杜鹃花（Rhododendron spp.）为杜鹃花科（Ericaceae）杜鹃花属（Rhododendron）所有种类及品种的统称[1]。（剩余12343字）