The features of anther in Niitaka、Atago and Housui were examined , and the pollen grains per anther and Pollen germination rates were investigated . The results showed that the anther of Niitaka and Atago had only a little male sterile pollen grains .The cytological features of anther and microspore development in Niitaka、Atago and Housui were examined by a light microscope . Compared with Housui, The microspore of Niitaka and Atago disintegrated mostly at the late mononuclear microspores stage; the anther...