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首页> 外文会议>Proceedings of the international conference on germplasm of ornamentals >Phenotypic Characterization of Mexican Orchid Laelia autumnalis
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Phenotypic Characterization of Mexican Orchid Laelia autumnalis

机译：墨西哥兰花Laelia autumnalis的表型表征

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Laelia autumnalis, an endemic species of Mexico is quite attractive because of its flowers' beauty, being a threatened species due to the serious disturbance of its habitat and the excessive gathering by humans.The purpose of this study was to phenotypically characterize 85 accessions of L.autumnalis from pine-oak forests in Michoacán, Mexico.Fifty nine morphological variables were recorded and, an analysis of variance, principal component (PC) and cluster analysis (CA) were made as well.The number of pseudobulbs, curvature of the ovary and the number of leaves were the measured variables with the highest variability.The first three PCs concentrated 63.63％ of the variability; PC1 represented 35.02％ of the total variability, as determined by the length and width of the column.PC2 contributed 15.82％ to the variability, as determined by the length of the pseudobulb, and the length of leaf 1.PC3 contributed 12.80％ to the variability as influenced by the diameter of the pseudobulb and the length of the bracteole.Two groups were identified from CA.Group Ⅰ, with 58 accessions, showing large structures with 79.67 mm in average length of pseudobulbs.The inflorescences are long with three flowers on average, sepals and petals with 55.33 and 50.42 mm in length,respectively; the flowers showed intense magenta shades in the middle lobe (N80A)and medium magenta shades at the apex of the column (N81B).Group Ⅱ comprised of 27 accessions with smaller structures than those from Group Ⅰ; the pseudobulbs averaged 62.64 mm in length.The inflorescences are smaller (44.76 cm long), the flowers with medium magenta shades in the middle lobe (N81B) and, soft magenta shades at the apex of the column (N78B).These results provide relevant data on the morphological variability of this species and on its potential for ornamental use, and for conservation.
机译：Laelia autumnalis是墨西哥的特有种，因为它的花朵美丽，由于其栖息地的严重干扰和人类的过度采摘而成为濒危物种。本研究的目的是表型表征85个L墨西哥米却肯州松栎林的秋茄（Autumnalis）。记录了59个形态变量，并对变异，主成分（PC）和聚类分析（CA）进行了分析。假鳞茎的数量，子房的曲率叶片数是变异性最高的被测变量。前三台PCs集中变异性的63.63％。 PC1代表总变异性的35.02％（由柱的长度和宽度决定）。PC2占变异性的15.82％（由假鳞茎的长度决定），叶1的长度占变异的12.8％。从假鳞茎的直径和bra茎的长度的变化影响变异性。从CA中鉴定出两组，第一组有58个种质，显示出平均大小为79.67 mm的假鳞茎的大结构。花序长，上面有三朵花萼片和花瓣的平均长度分别为55.33和50.42毫米；花的中叶（N80A）呈现强烈的品红色阴影，柱顶（N81B）的顶部呈现中品红色阴影。假鳞茎平均长62.64毫米，花序较小（44.76厘米长），中叶有中等洋红色阴影的花（N81B），柱顶具有柔和的洋红色阴影（N78B），这些结果提供了相关的信息有关该物种形态变异性及其在观赏用途和保护方面的潜力的数据。

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