This study suggests that the differences of altitude between subpopulation sites may result in the differences of phenological period for flowering and growth which restrict gene flow.

• 研究结果暗示，在阿尔卑斯山的高山-亚高山过渡区，亚居群间的海拔高度差别可能导致黄花茅开花和生长物候期的变化，而后者限制了亚居群间的基因流，从而引起居群内的遗传分化。