The results proposed that the abnormalities of microsporocytic cytoplasm or pollen exine, rather than the tapetal development caused the pollen abortion of Peiai 64S.

• 据此认为，培矮64S的花粉败育可能是由小孢子母细胞或花粉外壁的异常发育造成的，而不是由绒毡层发育引起的。