1. Rhizogenic plants propagate by producing new shoots from their underground rhizomes.
生长根茎的植物通过在地下根茎上产生新的嫩芽来繁殖。

2. The rhizogenic ability of certain species allows them to spread and colonize new areas quickly.
某些物种具有生长根茎的能力，使它们能够快速扩散和占领新地区。