However,only did a few pollen germinate in inter-specific hybridization between Cerasus fruticosa and C. avian and many pollen tubes are crosswise on stigma and couldnt penetrated into style.Although a few pollen tubes entered,they couldnt continue to gro
However,only did a few pollen germinate in inter-specific hybridization between Cerasus fruticosa and C. avian and many pollen tubes are crosswise on stigma and couldnt penetrated into style.Although a few pollen tubes entered,they couldnt continue to gro
而草原樱桃与欧洲甜樱桃种间杂交授粉后花粉在柱头上虽少量萌发，但花粉管在柱头上横向生长，或盘绕，扭曲不能伸入花柱；个别进入花柱的花粉管先端因沉积胼胝质而中途停止伸长未能进入子房到达胚珠，从而说明这种杂交授粉后花粉管的不正常行为是导致草原樱桃与欧洲甜樱桃远缘杂交不亲和的主要原因。