Population biology of Avena XI. Variation in peripheral isolates of A. barbata

✍ Scribed by S. K. Jain; K. N. Rai; R. S. Singh

• Book ID: 104624915
• Publisher: Springer Netherlands
• Year: 1981
• Tongue: English
• Weight: 199 KB
• Volume: 56
• Category: Article
• ISSN: 0016-6707
• DOI: 10.1007/bf00057562

✦ Synopsis

Data on genetic polymorphism, scored at two morphological loci, showed peripheral, isolated roadside colonies of slender oat (A vena barbata) to be significantly less polymorphic than the large central populations in continuous stands. The role of random drift (founder effect) was evident in the genetic structure of such roadside colonies which were, however, not monomorphic. Multilocus associations also suggested large Hill-Robertson effect in generating gametic disequilibria. Such isolates with varying amounts of elapsed time since the founder events could offer useful material for a study of evolutionary processes including the selection-drift balance.