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首页> 外文期刊>Acta Botanica Malacitana >VARIATION OF SPECIFIC MORPHOLOGICAL TRAITS AND PLOIDY LEVEL OF FIVE AEGILOPS L. SPECIES IN MOROCCO
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VARIATION OF SPECIFIC MORPHOLOGICAL TRAITS AND PLOIDY LEVEL OF FIVE AEGILOPS L. SPECIES IN MOROCCO

机译：摩洛哥5个鹰嘴豆种类的特定形态性状和多孔性的变化。

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摘要

The genus Aegilops L. represents an important natural source of useful genes for wheat breeding, with particular emphasis on biotic and abiotic stress resistance. For successful crosses, the primarily step is to select appropriate Aegilops accessions.In this paper, we studied five Morocean species of an Aegilops collection on the basis of spike structure and chromosome number, Twenty-eight specific morphological characters were used to differentiate the species. Statistical analyses, in particular the DFA, allowed the characterization of the genetic variability of the species; the two first standardized axes explained 96,2% of the total variability and 100% of the entities were classified within their own group. In addition, the dendrogram constructed using morphological data reveals a significant variability within and between species. Cytogenetic study revealed four species, A. geniculata Roth, A. triuncialis L., A. ventricosa Tausch and A. peregrina Maire & Weiller, to be tetraploid. However, A. neglecta Req. ex, Bertol., where only two accessions are represented in the collection, revealed to be hexaploid, and can then be classified as A. neglecta subsp. recta Chennav.
机译：Aegilops L.属是小麦育种有用基因的重要自然来源，尤其着重于抗生物和非生物胁迫。为了成功杂交，第一步是选择合适的埃及埃及种。本文根据刺的结构和染色体数目研究了埃及的五个埃及种，并利用28种特​​定的形态特征对其进行了区分。统计分析，特别是DFA，可以表征该物种的遗传变异性。前两个标准化轴解释了96.2％的总变异性，而100％的实体被归入了各自的组。此外，使用形态学数据构建的树状图显示出物种内部和物种之间的显着变异性。细胞遗传学研究表明，四个物种是：A。geniculata Roth，A。triuncialis L.，A。ventricosa Tausch和A. peregrina Maire＆Weiller，是四倍体。但是，A。neglecta要求。例如，在Bertol。中，该集合中仅代表两个种质，显示为六倍体，然后可以分类为A. neglecta亚种。雷纳·陈纳夫。

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