Geographical distribution of Allium oleraceum cytotypes in Finland and Sweden

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Chromosome numbers from a total number of 226 populations of Allium oleraceum were determined in Finland, Sweden and seven other countries. Two different chromosome numbers or cytotypes were found, tetraploids (2n = 32) and pentaploids (2n = 40).
In Finland, samples were collected for chromosome counts from a total of 190 populations, which fairly well covers the distribution area of the species in Finland. The majority of the populations of A. oleraceum in Finland contained only one of the two cytotypes. A clear pattern in the geographical distribution of the cytotypes could be distinguished. The pentaploid cytotype predominates in the Åland Islands and in the archipelago of Regio aboënsis. The tetraploid cytotype predominates on the mainland of the Regio aboënsis and along the coast of the Nylandia. In south Häme, all studied native populations were of the tetraploid cytotype. Of all the studied populations in Finland 43.7% were tetraploid and 51.6% pentaploid. A few mixed populations with both tetraploid and pentaploid plants occurring in the same population were also found (4.7%).
The chromosome numbers of 19 populations of A. oleraceum from the southern part of Sweden were pentaploids, with the exception of one tetraploid population. It seems that the pentaploid cytotype is predominant in Sweden, but no conclusions about a geographical pattern between the two cytotypes could be drawn.
Based on the occurrence of the cytotypes, it is suggested that the pentaploid cytotype might have spread to Finland from the Swedish east coast via the Åland Islands to Kaland on the Finnish west coast and along the coast of Nyland to the archipelagos of Kotka and Hamina in Karelia australis. The tetraploid populations in south Häme are clearly connected to Iron Age activity and to old inland trade routes, and may be of eastern origin.
Original languageEnglish
JournalNordic Journal of Botany
Volume33
Issue number1
Pages (from-to)120-125
Number of pages6
ISSN0107-055X
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 1183 Plant biology, microbiology, virology
  • tetraploid, pentaploid, population, chromosome number, northern Europe

Cite this

@article{6b2334ffcb4c4721b65d0da87bbd91ee,
title = "Geographical distribution of Allium oleraceum cytotypes in Finland and Sweden",
abstract = "Chromosome numbers from a total number of 226 populations of Allium oleraceum were determined in Finland, Sweden and seven other countries. Two different chromosome numbers or cytotypes were found, tetraploids (2n = 32) and pentaploids (2n = 40).In Finland, samples were collected for chromosome counts from a total of 190 populations, which fairly well covers the distribution area of the species in Finland. The majority of the populations of A. oleraceum in Finland contained only one of the two cytotypes. A clear pattern in the geographical distribution of the cytotypes could be distinguished. The pentaploid cytotype predominates in the {\AA}land Islands and in the archipelago of Regio abo{\"e}nsis. The tetraploid cytotype predominates on the mainland of the Regio abo{\"e}nsis and along the coast of the Nylandia. In south H{\"a}me, all studied native populations were of the tetraploid cytotype. Of all the studied populations in Finland 43.7{\%} were tetraploid and 51.6{\%} pentaploid. A few mixed populations with both tetraploid and pentaploid plants occurring in the same population were also found (4.7{\%}).The chromosome numbers of 19 populations of A. oleraceum from the southern part of Sweden were pentaploids, with the exception of one tetraploid population. It seems that the pentaploid cytotype is predominant in Sweden, but no conclusions about a geographical pattern between the two cytotypes could be drawn.Based on the occurrence of the cytotypes, it is suggested that the pentaploid cytotype might have spread to Finland from the Swedish east coast via the {\AA}land Islands to Kaland on the Finnish west coast and along the coast of Nyland to the archipelagos of Kotka and Hamina in Karelia australis. The tetraploid populations in south H{\"a}me are clearly connected to Iron Age activity and to old inland trade routes, and may be of eastern origin.",
keywords = "1183 Plant biology, microbiology, virology, tetraploid, pentaploid, population, chromosome number, northern Europe",
author = "Helena {\AA}str{\"o}m and Haeggstr{\"o}m, {Carl Adam} and Eeva Haeggstr{\"o}m",
year = "2015",
doi = "10.1111/njb.00521",
language = "English",
volume = "33",
pages = "120--125",
journal = "Nordic Journal of Botany",
issn = "0107-055X",
publisher = "Wiley",
number = "1",

}

Geographical distribution of Allium oleraceum cytotypes in Finland and Sweden. / Åström, Helena; Haeggström, Carl Adam; Haeggström, Eeva.

In: Nordic Journal of Botany, Vol. 33, No. 1, 2015, p. 120-125.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Geographical distribution of Allium oleraceum cytotypes in Finland and Sweden

AU - Åström, Helena

AU - Haeggström, Carl Adam

AU - Haeggström, Eeva

PY - 2015

Y1 - 2015

N2 - Chromosome numbers from a total number of 226 populations of Allium oleraceum were determined in Finland, Sweden and seven other countries. Two different chromosome numbers or cytotypes were found, tetraploids (2n = 32) and pentaploids (2n = 40).In Finland, samples were collected for chromosome counts from a total of 190 populations, which fairly well covers the distribution area of the species in Finland. The majority of the populations of A. oleraceum in Finland contained only one of the two cytotypes. A clear pattern in the geographical distribution of the cytotypes could be distinguished. The pentaploid cytotype predominates in the Åland Islands and in the archipelago of Regio aboënsis. The tetraploid cytotype predominates on the mainland of the Regio aboënsis and along the coast of the Nylandia. In south Häme, all studied native populations were of the tetraploid cytotype. Of all the studied populations in Finland 43.7% were tetraploid and 51.6% pentaploid. A few mixed populations with both tetraploid and pentaploid plants occurring in the same population were also found (4.7%).The chromosome numbers of 19 populations of A. oleraceum from the southern part of Sweden were pentaploids, with the exception of one tetraploid population. It seems that the pentaploid cytotype is predominant in Sweden, but no conclusions about a geographical pattern between the two cytotypes could be drawn.Based on the occurrence of the cytotypes, it is suggested that the pentaploid cytotype might have spread to Finland from the Swedish east coast via the Åland Islands to Kaland on the Finnish west coast and along the coast of Nyland to the archipelagos of Kotka and Hamina in Karelia australis. The tetraploid populations in south Häme are clearly connected to Iron Age activity and to old inland trade routes, and may be of eastern origin.

AB - Chromosome numbers from a total number of 226 populations of Allium oleraceum were determined in Finland, Sweden and seven other countries. Two different chromosome numbers or cytotypes were found, tetraploids (2n = 32) and pentaploids (2n = 40).In Finland, samples were collected for chromosome counts from a total of 190 populations, which fairly well covers the distribution area of the species in Finland. The majority of the populations of A. oleraceum in Finland contained only one of the two cytotypes. A clear pattern in the geographical distribution of the cytotypes could be distinguished. The pentaploid cytotype predominates in the Åland Islands and in the archipelago of Regio aboënsis. The tetraploid cytotype predominates on the mainland of the Regio aboënsis and along the coast of the Nylandia. In south Häme, all studied native populations were of the tetraploid cytotype. Of all the studied populations in Finland 43.7% were tetraploid and 51.6% pentaploid. A few mixed populations with both tetraploid and pentaploid plants occurring in the same population were also found (4.7%).The chromosome numbers of 19 populations of A. oleraceum from the southern part of Sweden were pentaploids, with the exception of one tetraploid population. It seems that the pentaploid cytotype is predominant in Sweden, but no conclusions about a geographical pattern between the two cytotypes could be drawn.Based on the occurrence of the cytotypes, it is suggested that the pentaploid cytotype might have spread to Finland from the Swedish east coast via the Åland Islands to Kaland on the Finnish west coast and along the coast of Nyland to the archipelagos of Kotka and Hamina in Karelia australis. The tetraploid populations in south Häme are clearly connected to Iron Age activity and to old inland trade routes, and may be of eastern origin.

KW - 1183 Plant biology, microbiology, virology

KW - tetraploid, pentaploid, population, chromosome number, northern Europe

U2 - 10.1111/njb.00521

DO - 10.1111/njb.00521

M3 - Article

VL - 33

SP - 120

EP - 125

JO - Nordic Journal of Botany

JF - Nordic Journal of Botany

SN - 0107-055X

IS - 1

ER -