Rooting characteristics and anatomical structure of Carpinus betulus Cuttings
[Objective] In this article,the effects of cutting period on rooting ability of cuttings and the formation and development process of adventitious roots from cuttings of Carpinus betulus were investigated.[Method] The spring hardwood (extracted on 2012-03-29) and summer softwood (extracted on 2012-06-09) were used to conduct the rooting of cuttings and observe the external morphology.With scanning electron microscopy technology,the formation and development process of adventitious roots from cuttings of Carpinus betulus was observed.[Result] The rooting results (such as rooting rate,longest root,and root effect index) of softwood cuttings were better than those of hardwood cuttings.Nodular ring with sagged center appeared on the base of hardwood,while milky white translucent projection emerged at the base of softwood.There was no latent root primordium in cutting of Carpinus betulus.The primordium cells and callus cells were different from the morphological and anatomical characteristics,and root primordium was not found in the callus tissue slices.[Conclusion] The adventitious roots of Carpinus betulus cuttings formed from the induced root primordium.The parenchyma cell of primary phloem and the partial parenchyma cell of pith ray at the intersection with the cambium developed into the induced root primordium and the formation of adventitious root and callus formation had little relevance.Carpinus betulus is non-callus rooting type species.
NETL
NSTL
万方数据
维普
