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首页> 外文期刊>Turkish Journal of Agriculture & Forestry >Diversity of avocado (Persea americana Mill.) cultivars from Antioquia (NortheastColombia) and comparison with a worldwide germplasm collection
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Diversity of avocado (Persea americana Mill.) cultivars from Antioquia (NortheastColombia) and comparison with a worldwide germplasm collection

机译：来自Antioquia（东北哥伦比亚）的鳄梨（Persea americana Mill。）品种的多样性以及与世界范围种质资源的比较

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In this study, the genetic diversity of 90 avocado (Persea americana Mill) cultivars from Antioquia (Colombia) was comparedto 67 germplasm collection accessions using 14 microsatellites. An average of 4.32 ± 2.0 alleles per locus was found, as observed inprevious studies. The expected and observed heterozygosity ranges were 0.384-0.724 and 0.393-0.686, respectively. The Antioquianavocados were genetically structured according to an analysis of molecular variance test (fixation index (FST) = 0.054, P 0.00001). Anunweighted pair group method with arithmetic mean (UPGMA) dendrogram with FST paired data produced 2 clusters one composed byAntioquian avocados and the other by the germplasm collection. Another UPGMA dendrogram with individual Nei-Li distances andadditional STRUCTURE analysis separated the Antioquian avocados into 3 clusters (K = 3). Combining samples from the Colombianand germplasm collections produced K = 2. Genetic differentiations between the Antioquian and worldwide avocado germplasmcollection could be due to crosses within the Antioquian avocados having been enhanced by insect pollinators, whereas avocadosstored in the germplasm collection were constituted by cultivars with known genetic origins. Findings from this study demonstratedthat criollo avocado genetics are unique in Antioquia, since the species has been naturally crossed in the field and its closest accessionis from Guatemala. Nevertheless, it is important to continue genotyping this species in other locations in Colombia from Sylvester andcultivar populations of this crop to determine its origin.
机译：在这项研究中，使用14个微卫星，将来自安蒂奥基亚（哥伦比亚）的90个鳄梨（Persea americana Mill）品种的遗传多样性与67个种质收集品进行了比较。如先前研究中所观察到的，每个基因座平均发现4.32±2.0个等位基因。预期和观察到的杂合度范围分别为0.384-0.724和0.393-0.686。根据分子方差分析（固定指数（FST）= 0.054，P <0.00001），对Antioquianavocados进行了遗传构建。具有FST配对数据的算术均值（UPGMA）树状图的非加权对群方法产生了2个簇，一个簇由安蒂奥基鳄梨组成，另一个簇由种质收集。另一个具有单个Nei-Li距离的UPGMA树状图和其他结构分析将Antioquian鳄梨分成3个簇（K = 3）。将来自哥伦比亚和种质资源收集的样本结合在一起，得出K =2。安蒂奥基亚鳄梨种质资源与全世界鳄梨种质资源之间的遗传分化可能是由于昆虫授粉者增强了安蒂奥基亚鳄梨内部的杂交，而种质资源库中存储的鳄梨是由具有已知遗传的栽培种构成的。起源。这项研究的结果表明，鳄梨鳄梨遗传学在安蒂奥基亚（Antioquia）中是独特的，因为该物种已在田间自然杂交，并且与危地马拉的近缘种也已杂交。然而，重要的是继续在哥伦比亚其他地方从该作物的西尔维斯特和栽培品种种群对该物种进行基因分型，以确定其起源。

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