干旱区生态环境知识资源中心(Arid): 肉苁蓉雌雄配子体发育的研究

Arid

	肉苁蓉雌雄配子体发育的研究
其他题名	Studies on development of male gametophyte and female gametophyte of Cistanche deserticola Ma
	马学平 1; 宋玉霞 2; 马洪爱 2; 郭生虎 2; 李苗 2
ISSN	1000-6281
出版年	2009
卷号	28 期号:1 页码:74-81
中文摘要	肉苁蓉(Cistanche deserticola Y.C.Ma)是一种沙生根寄生濒危药用植物.采用石蜡切片法,利用光镜观察,对内苁蓉雌雄配子体发育进行了系统研究.结果表明:花药壁由5层细胞组成,分别为表皮、药室内壁、中层(2层)和绒毡层,绒毡层细胞起源具异型性,发育类型为腺质型.小孢子母细胞胞质分裂为同时型,四分体为四面体型,成熟花粉粒为2-细胞型,部分败育.大孢子由单个孢原细胞直接发育为大孢子母细胞,大孢子母细胞减数分裂形成线状四分体,珠孔端3个大孢子最后退化,且退化顺序不一,大部分胚囊中的大孢子从合点端第2个开始退化,合点端大孢子为功能大孢子并发育为单核胚囊,胚囊发育属蓼型.研究结果为内苁蓉资源的保护提供细胞学依据.
英文摘要	Cistanche deserticola Ma, a kind of root parasitic psammophyte, is an endangered rate Chinese traditional medicines plant living desert. The overall male gametophyte and female gametophyte were studied of Cistanche deserticola Ma with optical microscope and means of paraffin method. The main results can be concluded as follows: Cistanche deserticola Y. C. Ma was a hermaphrodite species; there were four anthers, a anther had four anther sac. The archesporial cell developed to microspore mother cell or own functions of microspore mother cell. Meiosis of microspore mother cell was normal and cytokinesis was of simultaneous type, the tetrad was tetrahedron. In the course of development of male gametophyte, a part of microspore was abortion; the mature pollen was 2-celled. The development of the anther wall belonged to a dicotyledonous type, it consisted of epidermis, endothecium, middle layer (two layers) and tapetum. The tapetum was glandular tapetum of heteromorphism development of the gynoecium was normal, the ovary was solitary carpel and unilocular, it was unitegmic, tenuinacellar and anarropous. The embryo sac originated from the single archesporial was firstly atrophied, the following was megaspore of chalazal end developed to functional megaspore, the development of embryo sac is of the Polygonum type. cell, Meiosis of the megaspore mother cell formed dyad, and developed to linean tetrad.3-megaspore of micropylar end gradually atrophied, the third megaspore of micropylar end. The result will provid cytology evidence for protecting resources of Cistanche deserticola.
中文关键词	肉苁蓉 ; 雄配子体 ; 雌配子体
英文关键词	Cistanche deserticola Y.C.Ma male gametophyte female gametophyte
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES ; GENETICS HEREDITY
WOS研究方向	Plant Sciences ; Genetics & Heredity
CSCD记录号	CSCD:3504849
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223468
作者单位	1.宁夏大学生命科学学院, 宁夏农业生物技术重点实验室, 银川, 宁夏 750002, 中国; 2.宁夏农业生物技术重点实验室, 宁夏农业生物技术重点实验室, 银川, 宁夏 750002, 中国
推荐引用方式 GB/T 7714	马学平,宋玉霞,马洪爱,等. 肉苁蓉雌雄配子体发育的研究[J]. 宁夏大学,2009,28(1):74-81.
APA	马学平,宋玉霞,马洪爱,郭生虎,&李苗.(2009).肉苁蓉雌雄配子体发育的研究.,28(1),74-81.
MLA	马学平,et al."肉苁蓉雌雄配子体发育的研究".28.1(2009):74-81.