Crop genebanks keep a sample of the diversity in wild and cultivated germplasm. Knowing the structure of diversity within and among populations informs best decisions on efficient collecting, preservation and use. The US Potato Genebank has over 90 Solanum species, ranging in representation from only a few populations to several hundred. In a previous study we showed that populations of three species captured nearly all AFLP bands in polymorphic loci when represented by 100 populations that had been added over time to the genebank. In the current study we add analysis of two additional species and propose a simple metric, L₁₀₀, to compare the expected marker diversity capture of 100 populations among different species. L₁₀₀ detects when there is less population overlap and more rare markers, indicating that more populations are needed to capture the available diversity in a species.

作物基因库保留了野生和栽培种质多样性的样本。了解种群内部和种群之间的多样性结构可以为有效收集、保存和使用的最佳决策提供信息。美国马铃薯基因库拥有超过 90种茄属植物，数量从少数到数百种不等。在之前的一项研究中，我们表明三个物种的种群在多态性基因座中捕获了几乎所有的 AFLP 条带，当由随着时间的推移添加到基因库中的 100 个种群表示时。在当前的研究中，我们增加了对另外两个物种的分析，并提出了一个简单的指标 L ₁₀₀，以比较不同物种之间 100 个种群的预期标记多样性捕获。升₁₀₀ 检测何时有较少的种群重叠和更稀有的标记，表明需要更多的种群来捕获物种中可用的多样性。