Laboratorio de Ecología Funcional y Ecosistemas Tropicales (LEFET), Escuela de Ciencias Biológicas, Universidad Nacional, Omar Dengo Campus, 86-3000 Heredia, Costa Rica.
Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Avenida Purdue, s/n. Campus Universitário da Universidade Federal de Viçosa, Centro de Ciências Biológicas II, Viçosa, MG, CEP 36570 900, Brazil.
Food Res Int. 2021 Mar;141:110118. doi: 10.1016/j.foodres.2021.110118. Epub 2021 Jan 12.
The morphoanatomical characteristics of leaves were associated with altitude, hillside, and the cup quality of coffee produced in the Matas de Minas region. Although the small magnitude, there are correlations between cup quality with altitude and morpho-anatomical traits. Despite facing the differences of management inherent to 363 sampling sites, Northwestern hillside had significant lower cup quality, whereas only stomata density (SD) and thickness of the leaf epidermis in the adaxial face (AdET) showed significant differences between hillsides. Altitude, leaf mass per area (LMA) and SD, and to a lesser extent the thickness of the leaf epidermis in the abaxial face (AbET), were correlated (Spearman's correlation) with cup quality. Interestingly, AbET correlations were negative. Mantel's test significant correlations were found between coffee cup quality vs. altitude, LMA and petiole phloem area (PPhA). The spatial autocorrelation was significant only with LMA. Also, SD, to a lesser extent, was associated with cup quality. Despite the complexity of the association among the environment, plant growth and development, this is the first report to associate morpho-anatomical features of the leaf with the coffee cup traits. Even with the expectation of genotype/species vs environment interactions, and the influence of other parameters associated with post-harvest, roasting and brewing, the evaluation of LMA, SD, AdET, AbET and the thickness of the palisade parenchyma (PPT) allow a novel approach to access coffee cup quality.
叶片的形态解剖特征与米纳斯吉拉斯州马塔斯地区的海拔、山坡和咖啡杯质量有关。尽管相关性较小，但杯质量与海拔和形态解剖特征之间存在相关性。尽管面临 363 个采样点固有的管理差异，但西北山坡的杯质量显著较低，而只有气孔密度（SD）和叶片腹面表皮厚度（AdET）在山坡之间存在显著差异。海拔、比叶重（LMA）和 SD，以及叶片背面表皮厚度（AbET）在一定程度上与杯质量相关（Spearman 相关性）。有趣的是，AbET 相关性为负。曼特尔检验表明，咖啡杯质量与海拔、LMA 和叶柄韧皮部面积（PPhA）之间存在显著相关性。空间自相关仅与 LMA 显著相关。此外，SD 在一定程度上与杯质量相关。尽管环境、植物生长和发育之间的关联很复杂，但这是首次将叶片的形态解剖特征与咖啡杯特征联系起来的报告。即使考虑到基因型/物种与环境的相互作用以及与收获后、烘焙和酿造相关的其他参数的影响，对 LMA、SD、AdET、AbET 和栅栏组织厚度（PPT）的评估也可以为评估咖啡杯质量提供一种新方法。
