我们的网站为什么显示成这样?

可能因为您的浏览器不支持样式,您可以更新您的浏览器到最新版本,以获取对此功能的支持,访问下面的网站,获取关于浏览器的信息:

|本期目录/Table of Contents|

川东獐牙菜(龙胆科)的胚胎学研究(PDF)

《广西植物》[ISSN:1000-3142/CN:45-1134/Q]

期数:
2015年05期
页码:
631-640
栏目:
生理与发育
出版日期:
2015-09-15

文章信息/Info

Title:
Embryology of Swertia davidii(Gentianaceae)
文章编号:
1000-3142(2015)05-0631-10
作者:
李 鹂1 黄衡宇2*
1. 吉首大学 植物资源保护与利用湖南省高校重点实验室, 湖南 吉首 416000; 2. 云南中医学院 中药材优良种苗繁育工程研究中心, 昆明 650500
Author(s):
LI Li1 HUANG Heng-Yu2*
1. Key Laboratory of Plant Resources Conservation and Utilization of Hunan Provincial Colleges and Universities, Jishou University, Jishou 416000, China; 2. Engineering Research Center for Reproducing Fine Varieties of Chinese Medicinal Plants Yunnan University, Chinese Traditional Medicine, Kunming 650500, China
关键词:
川东獐牙菜 胚胎学 獐牙菜属
Keywords:
Swertia davidii embryology Swertia
分类号:
Q944.4
DOI:
10.11931/guihaia.gxzw201401046
文献标识码:
A
摘要:
利用石蜡切片技术,对川东獐牙菜(Swertia davidii)的胚胎发育过程进行显微观察,并根据现有资料,对獐牙菜属的几种植物进行了比较胚胎学研究。结果表明:川东獐牙菜花药四室,药壁发育为基本型,绒毡层异型起源,为腺质绒毡层,发育后期药室内观察到的绒毡层核是早期该层细胞有丝分裂凸入药室并原位退化形成的,中层细胞3层,药室内壁退化,花药壁表皮宿存,细胞柱状伸长,纤维状加厚; 小孢母细胞减数分裂为同时型,四分体排列方式主要为四面体形和左右对称型,少数为“T”形和十字交叉形,成熟花粉为2-细胞类型; 子房2心皮、1室,侧膜胎座; 薄珠心,单珠被,倒弯生胚珠,大孢子母细胞减数分裂形成4个大孢子直线形排列,合点端的大孢子具功能,雄配子体发育为蓼型; 2个极核在受精前融合为1次生核,合点端3个反足细胞宿存,每个细胞均多核和异常膨大,形成明显的反足吸器,并在胚乳之外形成染色较深的类似“外胚乳”结构; 珠孔受精,受精作用属于有丝分裂前类型; 胚乳发育为核型,胚胎发育为茄型; 果实成熟时,种子发育至心形胚阶段; 反足细胞在龙胆科一些短命植物中的宿存与分裂具有重要的生殖适应与进化意义。
Abstract:
The study includes the development of microsporangium,male gametophy,megasporogenesis,female gametophyte and embryogeny of Swertia davidii. The main results were as follows: anthers were tetrasporangiate. The development of anther walls conforms to the basic type and comprises of epidermis, endothecium, three middle layers and tapetum at the mature stage. The tapetum cells had dual origins and belonged to the glandular type, for the anther locules had degenerating tapetum nuclei in the middle,which were from the early dividing and intruding of the tapetum. Three middle layers were ephemeral,endothecium reduced and epidermis persists and developed to become fibrous-thickening. The cytokinesis of the microspore mother cell in meiosis was the Simultaneous type. Most of the microspore tetrads were tetrahedral and there were still a few other types,such as isobilateral,dilateral and “T”-shaped. Pollen grains were 2-celled when shed. The ovary was bicarpellate,unilocular with some series of ovules located at the parietal placentation. The ovule was unitegmic,enuinucellar and ana-campylotropous. The female gametophyte originated from the single-archesporial cell. The one chalazal megaspore in linear tetrad became the functional megaspore. The development of female gametophyte was the polygonum type. Before fertilization,two polar nuclei fused into a secondary nucleus. Three antipodal cells had multiseriate nuclei and distinct haustorium,and persisted like a layer of “outer endosperm” just out of the endosperm nucleus layer. Fertilization was porogamous and of premitotic syngamy type. The development of endosperm conformed to nuclear type and the embryogeny corresponded to the solanum type. The embryo was at the early heart-shaped stage when seeds released from the capsule. The dividing and persisting of the antipodal cells in some annual Gentianaceous plants were of significance in reproductive adaptation and evolution. At the same time,comparative embryology among some species of Swertia was studied basing on some recent data.

参考文献/References

Akhalkats M,Wagner J. 1996. Reproductive phenology and seed development of Gentianella caucasea in different habitats in the central Caucasus [J]. Flora,191: 161-168
Akhalkats M,Wagner J. 1997. Comparative embryology of three Gentianaceae species from the Caucasus and the European Alps [J]. PL Syst Evol,204: 29-48
Cameron BG,Ptaksh N. 1990. Occurrence of giant antipodals in the temale Gametophyte of Australian Bossiaceae,Indigofereae and Mitbelieae(Leguminosae)[J]. Aust J Bot,38: 395-401
Davis Gwend L.1966. Systematic Embryology of the Angiosperms [M]. New York: John Wiley: 70-71
He TN(何廷农). 1988. Flora of China(中国植物志)[M]. Beijing(北京): Science Press(科学出版社),62: 377-381
He TN(何廷农),Xue CY(薛春迎),Liu JQ(刘建全). 1999. Embryology of Swertia erythrosticta Maxim.(红直獐牙菜的胚胎学)[J]. Acta Bot Boreal-Occident Sin(西北植物学报),19(1): 76-80
Hu SY(胡适宜). 1983. Embryology of Angiosperms(被子植物胚胎学)[M]. Beijing(北京): People’s Education Press(人民教育出版社): 93-96
Huang HY(黄衡宇). 1999. Comparative embryology study on the Sinopodophyllum hexandrum and its close relative genera(桃儿七及其近缘属的比较胚胎学研究)[D]. Kunming(昆明): Yunnan University(云南大学) Huang HY(黄衡宇),Chen YG(陈义光). 2002. Tissue culture of medical plant Swertia davidii Franch(药用植物川东獐牙菜的组织培养)[J]. Guihaia(广西植物),22(5): 433-436
Huang HY(黄衡宇),Long H(龙华),Yi TT(易婷婷), et al. 2009. Embryogenesis of Swertia bimaculata(獐牙菜的胚胎发生)[J]. Bull Bot Res(植物研究),29(6): 665-673
Huang HY(黄衡宇),Long H(龙华),Yi TT(易婷婷),et al. 2010. Microsporogenesis and the development of male gametophyte in Swertia bimaculata(獐牙菜小孢子发生和雄配子体形成)[J]. Guihaia(广西植物),30(5): 584-593
Jiangsu New Medical College(江苏新医学院编). 1977. Dictionary of Traditional Medicine(中药大词典)[M]. Shanghai(上海): Shanghai Scientific and Technical Publishers(上海科学技术出版社): 784
Li HJ(李惠娟),Wang YZ(王耀芝). 1994. Embryological studies in Bentiana macrophylla(秦艽的胚胎学研究)[J]. Acta Bot Boreal-Occident Sin(西北植物学报),14(4): 243-248
Liang HX(梁汉兴). 1981. Formation of male and female gametophytes in Gastrodia elata Blume.(天麻大小孢子的发生和雌雄配子体的形成)[J]. Acta Bot Sin(植物学报),23(3): 188-191
Liang HX(梁汉兴). 1984. Embryological studies of Gastrodia elata Blume.(天麻胚胎学的研究)[J]. Acta Bot Sin (植物学报),26(5): 466-472
Liu JQ(刘建全),He TN(何廷农). 1996a. The Embryological studies of Comastoma pulmonarium(Gentianaceae)(喉毛花的胚胎学研究)[J]. Acta Phytotax Sin(植物分类学报),34(6): 577-585
Liu JQ(刘建全),He TN(何廷农). 1996b. Embryological studies of Gentianella azurea(黑边假龙胆的胚胎学研究)[J]. Acta Bot Yunnan(云南植物研究),18(2): 151-158
Liu JQ(刘建全),Xue CY(薛春迎),He TN(何廷农). 1998. Embryology of Swertia franchitiana,a famous Tibetan Medicine(藏药抱茎獐牙菜的胚胎学研究)[J]. J Northwest Normal University: Nat Sci Ed(西北师范大学学报·自然科学版),34(4): 59-66
Willemse MT,Went JL. 1984. The Female Gametophyte[M] //Johri BN(ed.)Embryology of Angiosperms. Berlin: Heidelberg; New York: Springer: 88-91
Xue CY(薛春迎),He TN(何廷农),Li DZ(李德铢). 1998. Embryology of Sweria cincta(Gentianaceae)and its systematic value(西南獐牙菜的胚胎学及其系统学意义)[J]. Acta Bot Yunnan(云南植物研究),24(1): 75-81
Xue CY(薛春迎),He TN(何廷农),Liu JQ(刘建全). 1999. Embryology of Swertia tetraptera Maxim.(Gentianaceae)and its systematic implication(四数獐牙菜的胚胎学及其系统学意义)[J]. Acta Phytotax Sin(植物分类学报),37(3): 259-263

备注/Memo

备注/Memo:
收稿日期: 2014-11-26修回日期: 2015-03-19
基金项目: 国家自然科学基金(31260102,31260077); 湖南省高校创新平台开放项目(11k053); 湖南省重点学科建设项目(JSU071301)。
作者简介: 李鹂(1973-),女(苗族),湖南永顺人,博士,教授,主要研究方向为植物生态及分子生物学,(E-mail)lilyjsu@126.com。 *通讯作者: 黄衡宇,博士,副教授,主要研究方向为植物发育生物学,(E-mail)hhyhhy96@163.com。
更新日期/Last Update: 2015-09-15