idiophase

The grow progress of bulb is divided to 5 stages: probulb idiophase, probulb enlargement stage, primarybulb idiophase, bulb weight fast gain stage and bulb plenum stage.

地下由原和侧两部分组，长发育可划分为5个阶：原分化期、原大期、侧形期、快速大期、充实期。