The extremely low genetic diversity in Brahmaputra populations was probably due to the unique landforms and vicariance of the Brahmaputra valley .
总之,雅鲁藏布江河谷地区特殊的地形和地貌以及与其他热带地区的地理隔离是造成丝须蒟蒻薯在这一地区遗传多样性极低的可能原因。