CAJ | 학술논문

采用常规石蜡切片法，对兴安白头翁小孢子不同发育时期的细胞学特征以及与花蕾大小的相关性进行研究。结果表明，兴安白头翁每朵花内包含数枚雄蕊，每个花药具有4个花粉囊，小孢子母细胞减数分裂属同时型，小孢子四分体属四面体型。成熟花粉粒属2-细胞型，并有3个萌发沟。花粉囊壁由4层细胞构成，即表皮、药室内壁、中层、绒毡层。绒毡层发育属腺质型（或分泌型），出现多核现象。兴安白头翁同一花蕾不同花药之间，同一花药不同花粉囊之间小孢子发育存在不同步性。
채용상규석사절편법，대흥안백두옹소포자불동발육시기적세포학특정이급여화뢰대소적상관성진행연구。결과표명，흥안백두옹매타화내포함수매웅예，매개화약구유4개화분낭，소포자모세포감수분렬속동시형，소포자사분체속사면체형。성숙화분립속2-세포형，병유3개맹발구。화분낭벽유4층세포구성，즉표피、약실내벽、중층、융전층。융전층발육속선질형（혹분비형），출현다핵현상。흥안백두옹동일화뢰불동화약지간，동일화약불동화분낭지간소포자발육존재불동보성。
The paper studied cytological characteristics of microspores during different develop-ments and correlations with bud size for Pulsatilla dahurica (Fisch.) Spreng by the methods of paraffin section. The results showed that each flower had several stamens, each anther had four pollen sacs, the microspore mother cells belonged to the simultaneous type of meiosis, and microspore tetrads were tetrahedral. The mature pollens belonged to the two-cell type with three germination aperture;the pollen sac wall was composed of four layers, epidermis, endothelium, middle layer, and tapetum; and the tapetum belonged to glanduar tapetum type (or secretory type) with multinucleate phenomenon. There was asynchronous for microspore development of the same buds in different anthers and the same anthers in different pollen sacs.