Department of Agronomy, University of Nebraska, Lincoln,Nebraska 68583-0915.
Am J Bot. 1998 Dec;85(12):1704-9.
Genetic variation was analyzed in the endangered prairie forbPenstemon haydenii. Individuals from nine populations weresurveyed for chloroplast DNA (cpDNA) and mitochondrial DNA (mtDNA)variation. No cpDNA polymorphism was found. Analysis of mtDNA revealedvariation within and among populations. A minimum of eight haplotypeswere identified. The distribution of these genotypes suggests that thereis some correlation between geographic and genetic distances, whichreflects the minimal gene flow in thisspecies.
对濒危草原植物海登须蕊草的遗传变异进行了分析。对来自 9 个种群的个体进行了叶绿体 DNA（cpDNA）和线粒体 DNA（mtDNA）变异的调查。未发现 cpDNA 多态性。mtDNA 分析显示种群内和种群间存在变异。鉴定出至少 8 种单倍型。这些基因型的分布表明地理和遗传距离之间存在一定的相关性，这反映了该物种最小的基因流。
