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首页> 外文期刊>Biotechnology & Biotechnological Equipment >Genetic diversity and marker?￠????trait association analysis for agronomic traits in Aconitum carmichaelii Debeaux
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Genetic diversity and marker?￠????trait association analysis for agronomic traits in Aconitum carmichaelii Debeaux

机译：乌头农艺性状的遗传多样性和标记性状关联分析

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ABSTRACT The root of Aconitum carmichaelii Debeaux is used in Oriental folk medicine, but its cultivation is very labour intensive. Therefore, it is important to dissect the genetic mechanism of agronomic traits to breed elite cultivars for commercial cultivation. We analyzed the genetic diversity of 126 genotypes of A. carmichaelii collected from the major productive regions in China based on 280 amplified fragment length polymorphism (AFLP) loci. The values of the coefficient of gene differentiation, Nei's gene diversity index, and Shannon's information index, and the results from a hierarchical analysis of molecular variance analysis indicated that there is more genetic variability within populations than between populations. Marker?￠????trait association analyses were conducted under a general linear model without controlling for population structure, and under a relative kinship model. In total, 59 loci were identified under both models for plant height (PH), stem diameter (SD), lateral root number (LRN), fresh weight and dry weight of stem (FWS and DWS, respectively), fresh weight and dry weight of leaves per plant (FWL and DWL, respectively), and fresh weight (FWR) and dry weight of individual lateral roots (DWR). Thirty-eight loci were associated with two to eight traits. For example, P1M1-39 was associated with variations in DWR, DWS, FWS, SD, DWL, FWL, FWR and PH, and P1M1-14 was close to a locus associated with variations in DWR, DWS, FWS, DWL, FWL, PH, FWR and LRN. Loci associated with favourable traits should be combined in commercial varieties to improve the yield and quality of A. carmichaelii .
机译：摘要乌头乌头的根被用于东方民间医学，但其栽培非常费力。因此，剖析农艺性状的遗传机制对于培育商品化优良品种十分重要。我们基于280个扩增片段长度多态性（AFLP）基因座，分析了从中国主要产区采集的126种卡氏假单胞菌基因型的遗传多样性。基因分化系数，Nei基因多样性指数和Shannon信息指数的值以及分子变异分析的层次分析结果表明，种群内部的遗传变异性高于种群之间的变异性。标记物特征关联分析是在不控制种群结构的一般线性模型和相对亲属模型下进行的。在这两种模型下，总共鉴定出59个基因座，分别用于株高（PH），茎直径（SD），侧根数（LRN），茎的鲜重和干重（分别为FWS和DWS），鲜重和干重每棵植物的叶片数量（分别为FWL和DWL），鲜重（FWR）和单个侧根的干重（DWR）。 38个基因座与2到8个性状相关。例如，P1M1-39与DWR，DWS，FWS，SD，DWL，FWL，FWR和PH的变化相关，而P1M1-14与DWR，DWS，FWS，DWL，FWL的变化相关的位置接近， PH，FWR和LRN。与优良性状相关的基因位点应结合到商业品种中以提高拟南芥的产量和质量。

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