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首页> 外文期刊>Australian Journal of Crop Science >Agro-morphological variability in durum wheat landraces of Morocco
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Agro-morphological variability in durum wheat landraces of Morocco

机译：摩洛哥硬粒小麦地方品种的农业形态变异

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The knowledge about the extent of variability, the distribution and the relationship between descriptors within local germplasm collection are a high value for the improvement and the efficient genetic diversity maintenance and utilization of plant species. The objective of this study was to evaluate the agro-morphological variability in a set of Moroccan durum wheat germplasm collection maintained in the National Gene Bank of Morocco (INRA, Settat). 467 durum wheat (Triticum turgidum L. var. durum) accessions comprising 444 landraces and 23 improved varieties were planted under field condition and their agro-morphological characters such as days to emergence, days to tillering, days to booting, days to head emergence, days to flowering, days to physiological maturity, plant height, thousands kernel weight, spike shape, and spike density were recorded. Univariate and multivariate analysis of data indicated that thousands kernel weight and plant height presented the highest coefficient of variation with 15.72% and 15.15% respectively. The two-dimensional principal coordinates analysis (2D PCOA) explained 52% of the total variance in the collection and separated the accessions into three main groups, namely, the early maturing and shorter (81 accessions), the moderately late and taller (154 accessions), and the late maturing and taller (232 accessions). The frequency distribution of spike characters showed the prevalence of the pyramidal and the dense spike with 54% and 42% respectively. The results of this study will support efforts of conservation and utilization of landraces in durum wheat breeding programmes.
机译：本地种质资源中变异程度，分布和描述符之间的关系的知识对于改善和有效地维持植物物种的遗传多样性具有很高的价值。这项研究的目的是评估摩洛哥国家硬核小麦种质资源集中在摩洛哥国家基因库（INRA，Settat）中的农业形态变异。在田间条件下种植了467种硬质小麦（Triticum turgidum L. var。durum）品种，包括444个地方品种和23个改良品种，其农业形态特征包括出苗天数，分er天数，孕穗天数，出苗天数，记录到开花的天数，到生理成熟的天数，植物高度，数千粒重，穗形状和穗密度。数据的单变量和多变量分析表明，千粒重和株高表现出最高的变异系数，分别为15.72％和15.15％。二维主坐标分析（2D PCOA）解释了集合中总变异的52％，并将这些种分为三个主要组，即早熟和短种（81种），中后期和高种（154种） ），以及晚熟和更高的品种（232种）。尖峰字符的频率分布显示金字塔状和密集尖峰的发生率分别为54％和42％。这项研究的结果将支持硬粒小麦育种计划中地方品种的保护和利用。

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