Cyto‐Histological Investigations of Pollen Abortion in Male‐Sterile Sudangrass1

Comparative morphological and cytological studies were made of anthers from a male‐sterile and male‐fertile line and a male‐sterile and a male‐fertile Ft hybrid of Sudangrass, Sorghum vulgare var. sudanense. Meiosis was normal in both male‐fertile and male‐sterile lines and normal tetrads were formed. Pollen abortion in male‐sterile lines was associated with non‐degeneration of the tapetal cells d…