The Complete Book of 100,000 Reasons Why
Favlit. ten thousand reasons why
向日葵为什么会有瘦果？
向日葵会有瘦果，主要是因为授粉受精过程异常、环境因素不利以及遗传因素影响，具体如下：
1、授粉受精过程异常：向日葵在开花期间，如果遇到授粉受精过程不正常，如花粉发育不良、传粉不足或受精障碍等，就会导致部分种子发育受阻，形成瘦果。
2、环境因素不利：在向日葵的结实期，如果遇到连续阴雨、光照不足、温度过高或过低、土壤养分不足等不利环境条件，都会影响种子的正常发育，导致瘦果的产生。
3、遗传因素影响：向日葵的品种特性也会影响瘦果的形成。一些品种可能因为遗传原因，在特定条件下更容易产生瘦果。
总结：向日葵会有瘦果，主要是因为授粉受精过程异常、环境因素不利以及遗传因素影响。
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