%0 Journal Article
%T Cytological study on the Meiosis and Male Gametophyte of Dioscorea parviflora<br>小花盾叶薯蓣减数分裂与雄配子发育细胞学观察
%A DONG Zhi-yuan
%A GUO Hua-chun
%A <br>董志渊
%A 郭华春
%J 热带亚热带植物学报
%D 2009
%I 
%X The meiosis and male gametophyte development of Dioscorea parviflora were studied using squash preparation. The results showed that there were four types of chromosome configuration at the metaphase II, such as parallel-type, triangle-type, vertical-type (one plate) and vertical-type (two plate). The microspores in tetrad stage showed three arrangements, such as isobilateral tetrad, decussate tetrad, and tetrahedral tetrad. The male gametophyte development of D. parviflora could be divided into 5 stages, including unicleate central-located stage, unicleate side-located stage, late-unicleate stage, pre-bicleate stage, and bicleate stage. Cytokinesis of microspore mother cells during meiosis was simultaneous type, and pollen grains were 2-cell, it suggested that the Dioscoreaceae was rather primitive in Angiosperm. The diversity of chromosome configurations at the metaphase II had no relationship with the formation of 2n gametes.
%K Dioscorea parviflora
%K Meiosis
%K Male gametophyte<br>小花盾叶薯蓣
%K 减数分裂
%K 雄配子
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=A74F042DF90151A4E3EF193E13FD5E1E&aid=A73F6CFAD9E8D6413E6FCECFEC1AB7C6&yid=DE12191FBD62783C&vid=BCA2697F357F2001&iid=CA4FD0336C81A37A&sid=B91E8C6D6FE990DB&eid=D3E34374A0D77D7F&journal_id=1005-3395&journal_name=热带亚热带植物学报&referenced_num=0&reference_num=20