ISOZYME EVIDENCE AND THE ORIGIN OF SENECIO-VULGARIS (COMPOSITAE)

被引:18
作者
ASHTON, PA [1 ]
ABBOTT, RJ [1 ]
机构
[1] UNIV ST ANDREWS,DEPT BIOL & PRECLIN MED,SIR HAROLD MITCHELL BLDG,ST ANDREWS KY16 9TH,FIFE,SCOTLAND
关键词
ANGIOSPERMS; COMPOSITAE; SENECIO-VULGARIS; S-VERNALIS; S-SQUALIDUS; ANCESTRY; AUTOPOLYPLOIDY; ALLOPOLYPLOIDY; ISOZYME VARIATION;
D O I
10.1007/BF00937594
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
An electrophoretic survey of isozyme variation was conducted to test the hypothesis that Senecio vulgaris L. (2n = 40) is of autotetraploid origin from S. vernalis WALDST. & KIT. (2n = 20). It was established that S. vulgaris exhibited fixed heterozygosity at three loci examined, showed disomic inheritance at all polymorphic loci, and contained a gene (aEst-1) and an allele (Aat-3b) which were not present in the single population of S. vernalis surveyed. From this it is concluded that S. vulgaris is not of autotetraploid origin. Instead, the genetic evidence is in keeping with an allopolyploid origin of S. vulgaris with the possibility that S. vernalis acted as one of its two parents.
引用
收藏
页码:167 / 174
页数:8
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