NOTES ON THE EXINE ULTRASTRUCTURE OF ONAGRACEAE AND RHODODENDROIDEAE (ERICACEAE)

被引:14
作者
KERI, C
ZETTER, R
机构
[1] Dept, of General and Comparative Physiology, Univ. of Vienna, Vienna, 1090
[2] Dept, of Palaeontology, Univ. of Vienna, Vienna, 1010
关键词
D O I
10.1080/00173139209430731
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
There are only three unrelated families (Onagraceae, Ericaceae and Caesalpiniaceae) known so far with viscin thread bearing pollen grains. In this work members of the Onagraceae and Ericaceae were investigated. Supposing that the viscin threads represent a specialized part of the exine, it is assumed that they are deduced from a single exine architecture principle. This can be confirmed especially for the investigated species. Similarities are also recognizable in early developmental stages. These similarities are the massive nexine, the endosexinel layer, consisting of sporopolleninous elements arranged in a paracristalline configuration and furthermore the tectal layer which can be identified by a higher gradation of sporopollenin polymerisation.
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页码:119 / 123
页数:5
相关论文
共 22 条
[1]  
Beer R., On the development of the pollen grain and anther of some Onagraceae, Beih. Bot. Zentralbl, 19, pp. 286-313, (1906)
[2]  
Erdtman G., Pollen Morphology and Plant taxonomy, (1952)
[3]  
Erdtman G., Handbook of palynology, (1969)
[4]  
Fritzsche J., Über den Pollen, (1836)
[5]  
Graham A., Barker G., da Silva Freitas M., Unique pollen types in the Caesalpinioideae (Leguminosae), Grana, 19, pp. 79-84, (1980)
[6]  
Hesse M., An exine architecture model for viscin threads, Grana, 23, pp. 69-75, (1984)
[7]  
Keri C., Entwicklungsgeschichte und Ultrastruktur des Sporoderms und der Tapctumzellen von Clarkia elegans, Epilobium angustifolium und Godelia purperea (Onagraceae), (1986)
[8]  
Nageli C., Zur Entwicklungsgeschichte des Pollens bei den Phanerogamen, (1842)
[9]  
Patel V.C., Skvarla J.J., Raven P.H., Pollen characters in relation to the delimination of Myrtales, Ann. Mo. Bot. Gard, 71, pp. 858-969, (1984)
[10]  
Patel V.C., Skvarla J.J., Ferguson I.K., Graham A., Raven P.H., The nature of thraedlike structures and other morphological characters in Jacquesliuberia pollen (Leguminosae: Caesalpinioideae), Am. J. Bot, 72, pp. 407-413, (1985)