A COMPARISON OF THE POLLEN WALL ULTRASTRUCTURE OF AUREOID AND NON-AUREOID SENECIO SPECIES (ASTERACEAE) IN NORTH-AMERICA

被引:10
作者
BAIN, JF
WALKER, J
机构
[1] Department of Biological Sciences, University of Lethbridge, Lethbridge, T1K 3M4, Alberta
关键词
ASTERACEAE; SENECIONEAE; SENECIO; AUREOID COMPLEX; PACKERA; POLLEN WALL; TEM; SYSTEMATICS;
D O I
10.1007/BF00989296
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The structure of the pollen wall as revealed by transmission electron microscopy is presented for 29 species Senecio including 19 aureoid and ten non-aureoid species. The previous report of a helianthoid wall structure (exine with internal foramina) is confirmed for all the aureoid species examined while all of the non-aureoid taxa showed a senecioid pattern. The data provide support for the treatment of the aureoid complex as a distinct taxon.
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页码:199 / 207
页数:9
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