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Selection in segregating populations of ornamental pepper plants (Capsicum annuum L.) using multidimensional scaling

机译:使用多维缩放的观赏辣椒植物(Capsicum Annuum L.)分离群体的选择

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摘要

Multidimensional scaling is a multivariate analysis technique that can be used to exploit genetic diversity, aiming at the selection of Capsicum genotypes with desirable characteristics for in-pot ornamental purposes. This work aimed to select genotypes with ornamental potential within F4 populations of ornamental pepper plants. Three F4 families were used (17.18, 30.16, and 56.8). The genotype distance matrices were estimated based on qualitative and quantitative descriptors, separately, combining the standardized distances of Gower and Mahalanobis, respectively. The relation of the distance between genotypes was graphically studied through non-metric multidimensional scaling. Kruskal' Stress was used as the measured misadjustment of the nMDS solution. There is genetic diversity within the analyzed families, allowing to practice selection. The selection in family 17.18 of genotypes 6 and 32 is recommended, as well as in family 30.16 of genotypes 22 and 4, and family 56.8 of genotypes 15 and 36, since they present important characteristics for ornamental purposes. The selection of genotypes is more efficient when using mixed data since it provides a more complete genetic diversity in an improvement program.
机译:多维缩放是一种多变量分析技术,可用于利用遗传多样性,旨在选择辣椒的基因型,具有可用于药物装饰目的的理想特征。这项工作旨在选择具有观赏辣椒植物的F4种群内的观赏潜力的基因型。使用了三个F4系列(17.18,30.16和56.8)。基于定性和定量描述符分别估计基因型距离矩阵,分别组合了Gower和Mahalanobis的标准化距离。通过非度量多维缩放来图形地研究基因型之间的距离的关系。 Kruskal'压力被用作核磁共振局部溶液的误解。分析的家庭内有遗传多样性,允许练习选择。建议在基因型6和32的家庭中的选择,以及基因型22和4的家庭30.16,以及基因型的家庭56.8,因为它们对装饰目的具有重要特征。当使用混合数据时,基因型的选择更有效,因为它在改进计划中提供了更完整的遗传多样性。
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