Isoenzyme diversity in Reynoutria (Polygonaceae) taxa: escape from sterility by hybridization
The genus Reynoutria is represented by four taxa in the Czech Republic — R. japonica var. japonica and compacta, R. sachalinensis and R. × bohemica. Using isoenzyme analysis, we determined the degree of genotype variability in all taxa and compared clones of R. japonica var. japonica from the Czech...
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Published in | Plant systematics and evolution Vol. 253; no. 1/4; pp. 219 - 230 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Heidelberg
Springer
01.06.2005
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | The genus Reynoutria is represented by four taxa in the Czech Republic — R. japonica var. japonica and compacta, R. sachalinensis and R. × bohemica. Using isoenzyme analysis, we determined the degree of genotype variability in all taxa and compared clones of R. japonica var. japonica from the Czech Republic with those from Great Britain. While the rarely occurring tetraploid variety R. japonica var. compacta possesses low variability, the octoploid female clone of R. japonica var. japonica is genetically uniform in the 93 clones sampled and belongs to the same genotype that is present in the whole Europe. R. japonica var. japonica can be fertilized by the pollen of tetraploid R. sachalinensis and a hexaploid hybrid R. × bohemica is produced. In R. sachalinensis, 16 genotypes were found in the 50 clones sampled. R. × bohemica is genetically the most diverse taxon in the study area, with 33 genotypes recorded among 88 clones sampled. |
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ISSN: | 0378-2697 1615-6110 2199-6881 |
DOI: | 10.1007/s00606-005-0316-6 |