【摘要】 采用子房整体染色法和石蜡切片技术对同源四倍体水稻紫血稻_（4）在受精前后的特异性进行了研究。观察结果表明,与相应的二倍体水稻紫血稻_（2）相比,紫血稻_（4）的花粉粒在其柱头上萌发比较慢,花粉管在花柱内伸长比较迟缓,花粉管进入胚囊、精卵结合、精子与极核融合、合子和初生胚乳核发生第一次分裂的时间都比较迟。在紫血稻_（4）中存在着比较多的退化型胚囊（55.0％）,反足细胞团的形态结构异常,存在着低频率（2.0％）的胚自发现象。紫血稻_（4）在受精前后所表现的特异性是其有性生殖能力明显变弱的重要标志之一。更多还原

【Abstract】 Abnormal features of autotetraploidy rice, Zixuedao(4), before or after fertilization were researched by means of the full ovary technique with Hematoxy (C16H14O63H2O) and paraffin - section method. The results showed that the pollen grains of Zixuedao(4) germinated laterly in the stigmas, the pollen tubes grew slowerly in the styles, and the pollen tubes defered to go into the embryo sacs. All the times of the fertilizational phenomena, including the mergence of a sperm with an egg, the combination of a sperm with a polar nucleus, and the first division of the zygote and the initial endosperm nucleus, were later. There were more degenerate embryo sacs (55.0%), antipodal cells with the abnormal structure, the self- developmental embryo (2.0% ) in Zixuedao(4). It was suggested that the abnormal feature of Zix-uedao(4) before or after fertilization showed one of the most important signs of weakerly sexually reproductive ability.更多还原