Elmer Viana Gonçalves, Josiane Celerino de Carvalho, Pedro Paulo dos Santos, Karen Cristina P. da Costa, Adamir da Rocha N. Júnior, Larissa Carolina Alves, Katharine Duarte Gonçalves, Roberval Monteiro B. de Lima, Andreia Varmes Fernandes, Wagner Luiz Araújo, José Francisco de C. Gonçalves
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引用次数: 0
摘要
摘要巴西坚果树（Bertholletia excelsa Bonpl.）是亚马逊地区社会经济和生态方面的主要树种之一，其特点是萌芽缓慢且不均匀。考虑到其基因构成是萌芽形态学和生理学的决定因素，我们研究了不同巴西坚果树基因型的种子形态生理学特征，并对叶片进行了形态解剖学描述。不同基因型在种子形态、浸种曲线、萌发率和萌发速度指数以及部分叶片形态解剖结构方面存在差异。基因型 606 在发芽期间表现出最佳的生理性能，主要表现在吸水方面，因为它需要吸收的水分较少，发芽率比基因型 Sant Fé 高，此外气孔指数也较高。在被评估的基因型中，叶片上出现了五重脉纹，与野生基质的叶片不同。我们的研究结果有助于从形态解剖学上区分 B. excelsa 的不同基因型，为克隆繁殖迈出了重要一步，并为改善这些物种的生理和遗传特性提供了一条途径。
Deciphering the role of the morphophysiology of germination and leaves morphoanatomy for differentiation of Brazil nut genotypes
Abstract
The Brazil nut tree (Bertholletia excelsa Bonpl.), one of the main species from the socioeconomic and ecological point of view of the Amazon, is characterized by slow and uneven germination. Considering that its genetic constitution is a determining factor for the morphology and physiology of germination, we investigated different Brazil nut tree genotypes regarding morphophysiological seed traits and performed a morphoanatomical description of the leaves. Genotypes showed differences in seed morphology, imbibition curve, germination rate, and germination speed index, and also, in some of the morphoanatomical leaf structures. The genotype 606 showed the best physiological performance during germination, mainly in terms of water imbibition, as it needs to absorb less water and achieve a higher germination percentage than the genotype Sant Fé, in addition to a higher stomatal index. In the evaluated genotypes, quintenary venation was observed in the leaves, different from a leaf from a wild matrix. Our findings aid the morphoanatomical differentiation of different genotypes of B. excelsa, and represent a significant step forward for clonal propagation, as well as providing a route for improving these species’ physiological and genetic characteristics.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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