Valadez-Moctezuma E, Cabrera-Hidalgo A J
Laboratorio de Biología Molecular, Departamento de Fitotecnia, Universidad Autónoma Chapingo, Carr. México-Texcoco km 38.5, C.P. 56230 Chapingo, Edo. México Mexico.
Physiol Mol Biol Plants. 2018 Sep;24(5):921-928. doi: 10.1007/s12298-018-0548-x. Epub 2018 Jul 13.
A priority in the management and use of elite plant materials for breeding has been based on molecular markers or DNA sequencing of entire genomes, in order to perform genetic differentiation which is still quite costly. Chickpea () is one of the species with genomic monotony and very low polymorphism, and its detection even with DNA markers has not been easy. In germplasm banks, the genetic distinction is a priority in order to use properly selected lines. In this study, 57 chickpea accessions from a germplasm bank were analyzed by using nrRAMP (non-radioactive Random Amplified Microsatellite Polymorphism) markers, and their genetic variability was determined. Our results showed DNA polymorphisms, which are enough to differentiate between the accessions and between and (out-group); this last wild species is closely related to chickpea. We concluded that the nrRAMP technique was an effective and a highly useful method to assess the genetic diversity and variability among closely related plants, such as chickpea; in addition, this technique can be easily implemented in laboratories.
为了进行遗传分化(这仍然成本高昂),利用分子标记或对整个基因组进行DNA测序一直是精英植物材料管理和育种应用中的一个优先事项。鹰嘴豆()是基因组单调且多态性极低的物种之一,即使使用DNA标记对其进行检测也并非易事。在种质库中,为了正确使用所选品系,遗传区分是一个优先事项。在本研究中,利用nrRAMP(非放射性随机扩增多态性微卫星)标记对种质库中的57份鹰嘴豆种质进行了分析,并确定了它们的遗传变异性。我们的结果显示了DNA多态性,这些多态性足以区分不同的种质以及鹰嘴豆与(外类群)之间的差异;最后提到的这个野生种与鹰嘴豆密切相关。我们得出结论,nrRAMP技术是评估鹰嘴豆等近缘植物间遗传多样性和变异性的一种有效且非常有用的方法;此外,该技术可在实验室中轻松实施。