germination factor

例句：

1. 1. The study of the seedlingfactor is crucial for understanding plant growth.
   研究种子萌发因子对于理解植物生长至关重要。
2. 2. The research on the germination factorhas led to significant advancements in agriculture.
   关于发芽因子的研究已经导致了农业的显著进步。
3. 3. The role of the germinationfactor in plant development is still not fullyunderstood.
   发芽因子在植物发育中的作用仍然不完全清楚。