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首页> 外文期刊>African Journal of Biotechnology >Morphometric analysis of Dactylorhiza hatagirea (D. Don), a critically endangered orchid in cold desert Ladakh region of India
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Morphometric analysis of Dactylorhiza hatagirea (D. Don), a critically endangered orchid in cold desert Ladakh region of India

机译：Dactylorhiza hatagirea（D。Don）的形态计量分析，这是印度冷漠拉达克地区的一种极度濒危兰花

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The morphometric study was conducted during 2009 to 2010. About 28 morphological characters were measured under 13 natural populations of?Dactylorhiza hatagirea.Geographic variation in morphology reflects phenotypic responses to environmental gradients and evolutionary history of populations and species. At points, beside its broad geographic range (Nubra, Suru and Indus valley) characterization ofDactylorhiza?phenotype is normally accomplished by use of morphological descriptors, hence as a first step, phenotype collection and its morphometric analysis was assessed. However, plant height, leaf length, lowermost leaf length, length of second leaf from base and mean length from lowest bract to the top of inflorescence are presented to account for the remarkable variation in morphological characters. Tirith population showed more values of this trait while Skurru showed less value. From this, it is concluded that Tirith showed great morphometric variation as compared to other population.?Multivariate morphometric techniques, principal component analysis (PCA), multidimensional scaling (MDS) and cluster analysis were used to determine whether these populations can be reliably morphologically similar or dissimilar.?The first two principal components encompass more than 75% variation among population. The results of PCA and MDS analysis were comparable to the cluster analysis, which shows considerable phenotypic variation in morphological and horticultural traits that can be utilized in its genetic improvement. To support this study, further constructive information were provided on the status of the populations of?D. hatagirea?which may increase the conservation value of this site and resolve the suitable areas with taxonomic and nomenclatural controversies.
机译：形态计量学研究于2009年至2010年进行。在13个自然根瘤菌（Dactylorhiza hatagirea）的自然种群下测量了约28个形态特征。形态上的地理变异反映了对环境梯度的表型响应以及种群和物种的进化历史。在某些时候，除了其广泛的地理范围（Nubra，Suru和Indus谷地）外，Dactylorhiza？表型的表征通常是通过使用形态学描述符来完成的，因此，第一步是评估表型的收集及其形态分析。然而，提出了植物高度，叶长，最低叶长，从基部第二片叶的长度以及从最低act片到花序顶部的平均长度，以解释形态特征的显着变化。提里斯（Tirith）种群显示出该特性更多的价值，而斯库鲁（Skurru）显示出更低的价值。由此得出结论，与其他种群相比，Tirith表现出很大的形态学变异。？采用多元形态学技术，主成分分析（PCA），多维尺度分析（MDS）和聚类分析来确定这些种群在形态学上是否可以可靠地相似或不相似。前两个主要组成部分涵盖了人口之间超过75％的差异。 PCA和MDS分析的结果可与聚类分析相媲美，聚类分析显示可在其遗传改良中利用的形态和园艺性状的显着表型变异。为了支持这项研究，还提供了有关D人群状况的进一步建设性信息。 hatagirea？这可能会增加该地点的保护价值，并通过分类学和命名学上的争议解决合适的区域。

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