CYTOLOGICAL ABSERVATIONS ON ANTHER AND POLLEN DEVELOPMENTS OF QIANXING WALE STERILE AND STERILITY MAINTAINER LINES OF WHEAT
Song Renjin Zhang Qingqin Liu Linong (Institute of Wheat Crop, Guizhou Agricultural College) Li Huaqin (Institute of Plant Physiology, Guizhou Agricultural College)
In this investigation the anthers and pollens of Qianxing wheat male sterile and sterility maintainer lines were abserved and analysed with their developments. It has been showed that the male sterility of Qianxing wheat is CMS. Before the commencement of microsporogencsis, more than 90% of the anthers and pollens of Qianxing wheat male sterile, developed in the similar manner to that of maintainer lines, and only a few of them revealed various abnormalities were as follows, the abnormal fusion of anther chambers, the disorganization of pollen mother cells, the abnormality of chromsome behavious, the malformed tetrad, the tapetal cells, disorganized for microsporgenesis. The pollen aborting in male sterille lines might occer in various stages of microsporogenesis. However, the degeneration of pollen at later stage of microsporgensis of male sterile lines was the critical stage, the microspores at this stage failed to carry on their male gametogenesis in any cases.