Spanish red cedar, Cedrela odorata L. (Meliaceae), is a valuable timber tree in tropical American forests. Existing demand for elite individuals endangers the conservation of interesting germplasm, prompting the development of efficient protocols for the establishment of orchards for tree breeding. Based on previous work regarding grafting adult individuals onto young rootstocks, superior trees from Calakmul Biosphere Reserve in Campeche, Mexico were employed as a source of explants for plant regeneration after successive rounds of grafting and micrografting onto juvenile rootstocks. The results showed that root length and appearance, internode distance, leaf length and number, and plant height values for trees derived from successive rounds of grafting and micrografting were similar to those obtained from juvenile trees derived from seeds, suggesting that developmental traits associated with reinvigoration were partially induced following the reported procedure. This protocol may be useful for the propagation of mature elite trees belonging to the Meliaceae family.

中文翻译：

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连续嫁接将成年性状赋予成年西班牙红柏（Cedrela odorata Linnaeus）：抢救选定材料的工具

西班牙红雪松，Cedrela odorataL.（Meliaceae）是热带美洲森林中的一种珍贵木材。对精英个体的现有需求危及了对有趣种质的保存，从而促进了建立果树育种园的有效协议的发展。根据先前关于将成年个体嫁接到年轻砧木上的工作，在连续几轮嫁接和微嫁接到幼年砧木上之后，墨西哥坎佩切州Calakmul生物圈保护区的优质树木被用作植物再生的外植体来源。结果表明，从连续几轮嫁接和微嫁接获得的树木的根长和外观，节间距离，叶长和数量以及植物高度值与从种子衍生的幼树获得的相似，这表明与重振有关的发育特征是根据报道的程序部分诱发的。该协议对于传播属于Mel科的成熟精英树可能有用。