Abstract: Pollen abort ion in the male sterile line of cauliflower w as studied in this paper. T he re sult show ed that, in the male sterile line, the development of microspore mother cells was normal, the meiosis proceeded normally to form the tet rads. Microspore abort ion occurred af ter the tetrad format ion. With the abort ion of the microspore, the tappet cells g row longitudinally and became highy vacuolated, which interfering the normal development of the microspore, and leading to pollen grain abortion。

Key words: Caulif low er, Male sterile line, Microspore

CLC Number: 

• S635.3