Tetraploid seed had stronger amylase activity, rapid glucose metabolism, therefore much more soluble sugar provided energy for the necessary germination.

• 与二倍体新麦草种子相比，四倍体种子萌发过程中淀粉酶的活性更强，糖代谢速度快，更多的可溶性糖能给幼苗生长提供能量。