1.Auxins influence the growth of stems toward light (phototropism) and against the force of gravity (geotropism).

1.它可影响茎性和背地性生长。

2.The geotropism growth was a response of hypha to gravity and the geotropic sensitive was at the hyphal apex.

2.丛枝真延伸生长部位尖端，其生长地性对地心引力感应，感应敏感部位也在生长尖端。