In TRP, the pollen was chubbier, pollen sac more spatial, stigma plate bigger, stigma more secretion, both filament and style and their epidermis cells longer than DRP.

• 花药形态结构更为丰满，药室空间较大，柱头面积增大且分泌的粘液较多，花丝和花柱以及它们的表皮细胞均较长。