文章基本信息

标题：Graft union formation in elepidote rhododendrons
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作者：Dace Megre ; Uldis Kondratovičs ; Irina Grāve 等
期刊名称：Environmental and Experimental Biology
印刷版ISSN：1691-8088
出版年度：2004
页码：71-77
出版社：University of Latvia
摘要：Light microscopy was used to study the graft union formation of splice graft in the elepidoterhododendrons cultivar 'Cunningham's White'. The fi rst visible reaction after grafting was theappearance of a necrotic layer between graft partners consisting of fragmented and compressedcells. Callus was visible six days after grafting and was formed from recent cambial derivativesand phloem rays cells. New cambium and tracheary elements were differentiated from callus cells.Newly differentiated cambium was slightly curved or had an S-shape, and it depended on rootstockand scion tissue matching. When initially the gap between the graft partners remained wide, callusproduced more new cambiums: one of them emerged between pre-existing cambium of graftcomponent and an uncommon one – in the pith region. The possible function of this uncommoncambium is discussed.
关键词：callus development; cambium; grafting; rhododendron; vegetative propagation