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Karyotypic studies in wild germplasm of Arachis (Leguminosae)

机译：花生（Leguminosae）野生种质的核型研究

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The karyomorphology for eight diploid species of Arachis belonging to three sections has been described for the first time, Sect. Extranervosae: A. macedoi (2n = 20m) and A. retusa (2n = 14m + 6sm); Sect. Heteranthae: A. sylvestris (2n = 16m + 4sm); Sect. Procumbentes: A. chiquitana (2n = 18m + 2sm); Sect. Arachis: A. cruziana (2n = 18m + 2sm), A. herzogii (2n = 18m + 2sm), A. simpsonii (2n = 20m) and A. williamsii (2n = 20m). A pair of satellited chromosomes was observed in all species. A chromosomes were found in A. chiquitana, A. herzogii and A. simpsonii. Karyotypic differences between sections were observed, but not enough to establish a characteristic karyotype pattern for each section. However, the species may be differentiated by the presence of A chromosomes, the type and position of satellites, and the karyotype formulae. These results are discussed with regard to karyotype evolution in Arachis to contribute to understanding the role of chromosome changes in the evolution of the genus.
机译：首次描述了属于三个部分的8种Arachis二倍体物种的核形态。圆角龙科：马其顿菇（2n = 20m）和白曲霉（2n = 14m + 6sm）;教派。 ：A. sylvestris（2n = 16m + 4sm）;教派。临足动物：A. chiquitana（2n = 18m + 2sm）;教派。花生：A. cruziana（2n = 18m + 2sm），A。herzogii（2n = 18m + 2sm），A。simpsonii（2n = 20m）和A. williamsii（2n = 20m）。在所有物种中均观察到一对卫星染色体。在A. chiquitana，A。herzogii和A. simpsonii中发现了一条染色体。观察到部分之间的核型差异，但不足以建立每个部分的特征性核型模式。但是，可以通过A染色体的存在，卫星的类型和位置以及核型公式来区分该物种。讨论了有关花生的核型进化的这些结果，以有助于理解染色体变化在该属进化中的作用。

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