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Agro-morphological characterization of durum wheat accessions using pattern analysis

机译：硬粒小麦种质形态特征的农学分析

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摘要

Information on the variation available for different plant attributes has enabled germplasm collections to be effectively utilized in plant breeding. This investigation was carried out to characterize 85 durum wheat accessions based on 19 qualitative and quantitative agro-morphological attributes and to describe the genetic variation among the accessions as a subset of worldwide germplasm collection conserved in Iran under irrigated condition. The investigation was also aimed to study relationship among the traits and to find out adapted accessions that can be used in durum wheat breeding program. Univariate and Multivariate (clustering and ordination) techniques were used to investigate the diversity present among the accessions in the collection. Both cluster and ordination analyses suggested that eight groups of accessions existed. The comparison of accession groups based on traits verified that it is possible to find out contrasting group based on the traits for improving genetic materials in breeding programs. Applying accession-by-trait (AT) biplot analysis to the multiple trait data revealed that AT-biplot graphically displayed the interrelationships among traits and facilitated visual comparison of accessions and selection. The results also showed that, based on qualitative and quantitative measurements, the accessions in different groups were belonged to different countries which suggested that there was no clear relationship between accessions and geographical diversity. The information on diversity and relationships among the agro- morphological traits will be helpful to breeders in constructing their breeding populations and implementing selection strategies.
机译：有关可用于不同植物属性的变异的信息，使种质收集得以有效地用于植物育种。进行了这项研究，以基于19种定性和定量农业形态学特征对85种硬粒小麦种质进行了表征，并描述了这些种质之间的遗传变异，将其作为灌溉条件下伊朗保存的全球种质资源的一个子集。该调查还旨在研究这些性状之间的关系，并找出可用于硬粒小麦育种计划的改良种质。使用单变量和多变量（聚类和排序）技术来研究馆藏中种质之间的多样性。聚类分析和排序分析均表明存在八组种质。对基于性状的种质组进行比较，证明可以根据性状找到对比组，以提高育种程序中的遗传物质。对特征性状进行AT-biplot分析发现，AT-biplot以图形方式显示了性状之间的相互关系，并促进了可视化的登录和选择。结果还表明，基于定性和定量的测量，不同群体中的材料属于不同的国家，这表明材料与地理多样性之间没有明确的关系。有关农艺性状多样性和相互关系的信息将有助于育种者建立其育种种群并实施选择策略。

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