5. (4) The changes of ADPG-PPase(AGP), soluble starch synthase(SSS), granule-bound starch synthase (GBSS) and starch branching enzyme (SBE) activities in the caryopses is a single peak curve.

• 颖果：一种不开裂的干果，是禾本科植物特有的果实类型。与瘦果相似，不同点在于颖果的果皮和种皮紧密愈合不易分离。收藏指正