Molecular confirmation of species status for the allopolyploid cotton species, Gossypium ekmanianum Wittmack

Grover C. E.; Zhu X.; Grupp K. K.; Jareczek J. J.; Gallagher J. P.; Szadkowski E.; Seijo J. G.; Wendel J. F.

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Molecular confirmation of species status for the allopolyploid cotton species, Gossypium ekmanianum Wittmack

机译：异源多倍体棉种Gossypium ekmanianum Wittmack物种状态的分子确认

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Understanding the relationship between domesticated crop species and their wild relatives is paramount to germplasm maintenance and the utilization of wild relatives in breeding programs. Recently, Gossypium ekmanianum was resurrected as an independent species based on morphological analysis of specimens obtained from the Dominican Republic, where the original type specimen was collected. The molecular data presented here support the recognition of G. ekmanianum Wittmack as a distinct species that is phylogenetically close to G. hirsutum L. Analyses of chloroplast DNA data reveal species-specific, indel polymorphisms that unambiguously distinguish G. ekmanianum samples from other polyploid congeners. Furthermore, analysis of accessions that originated from the Dominican Republic demonstrate the cryptic inclusion of this sister taxon within the US National Plant Germplasm System, a germplasm collection maintained for diversity preservation and future breeding resources. The data presented here indicate that "wild" G. hirsutum accessions may include the closely related G. ekmanianum, and provide a method to easily distinguish the two.

机译：了解家养作物物种及其野生近缘种之间的关系对于维持种质和在繁殖计划中利用野生近缘种至关重要。最近，根据从多米尼加共和国获得的标本的形态学分析，该植物被复活为一个独立的物种，在那里收集了原始类型的标本。此处提供的分子数据支持将埃克曼希曼·维特马克（G. ekmanianum Wittmack）识别为系统发育上与G. hirsutum L接近的独特物种。叶绿体DNA数据的分析揭示了特定于物种的indel多态性，可将埃克曼希曼·安哥拉样品与其他多倍体同类物毫无区别。此外，对来自多米尼加共和国的种质的分析表明，该姊妹分类单元被秘密地包含在美国国家植物种质系统中，该种质集合被保存用于多样性保护和未来育种资源。此处提供的数据表明“野生” hirsutum菌种可能包括密切相关的G. ekmanianum，并提供了一种轻松区分两者的方法。

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《Genetic Resources and Crop Evolution》 |2015年第1期|共12页
作者
Grover C. E.; Zhu X.; Grupp K. K.; Jareczek J. J.; Gallagher J. P.; Szadkowski E.; Seijo J. G.; Wendel J. F.;
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正文语种 eng
中图分类农业生物学;
关键词
Breeding; Cryptic species; Germplasm; Gossypium ekmanianum; Polyploid;

机译：选育;隐性种;种质;伊曼棉;多倍体;

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机译：异源多倍体棉种Gossypium ekmanianum Wittmack物种状态的分子确认
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Molecular confirmation of species status for the allopolyploid cotton species, Gossypium ekmanianum Wittmack

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