pollen growth factor

例句：

1. 1. Thepollen growth factor is crucial for thegrowth of flowers.
   花粉生长因子对于花朵的生长至关重要。
2. 2. This plant has a unique ability toproduce pollen growth factor.
   这种植物具有产生花粉生长因子的独特能力。
3. 3. The pollengrowth factor plays a vital role in thepollination process.
   花粉生长因子在授粉过程中起着至关重要的作用。