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Genes 2018, 9(2), 111; https://doi.org/10.3390/genes9020111

Genetic Variation and Hybridisation among Eight Species of kōwhai (Sophora: Fabaceae) from New Zealand Revealed by Microsatellite Markers

1
Research Associate, Allan Herbarium, Landcare Research, PO Box 40, Lincoln 7640, New Zealand
2
Landcare Research, PO Box 40, Lincoln 7640, New Zealand
*
Author to whom correspondence should be addressed.
Received: 30 January 2018 / Revised: 12 February 2018 / Accepted: 16 February 2018 / Published: 20 February 2018
(This article belongs to the Special Issue Genetics and Genomics of the Rhizobium-Legume Symbiosis)
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Abstract

We analysed nine microsatellite markers for 626 individuals representing the geographic range of eight closely related endemic New Zealand species of Sophora. Structure analysis identified the optimal K value as seven, with samples identified as Sophora chathamica, Sophora fulvida, Sophora longicarinata, and Sophora prostrata retrieved as well-defined groups. The remaining samples formed less resolved groups referable to Sophora tetraptera and Sophora godleyi, with Sophora microphylla and Sophora molloyi forming the seventh group. Our data suggest that considerable admixture occurs and this is most likely the result of hybridisation or introgression. S. fulvida shows admixture with the sympatric S. chathamica, and the widespread S. microphylla exhibits admixture with the sympatric S. godleyi, S. molloyi, and S. tetraptera. View Full-Text
Keywords: Fabaceae; hybridisation; kōwhai; microsatellite markers; New Zealand; Sophora section Edwardsia; species concepts Fabaceae; hybridisation; kōwhai; microsatellite markers; New Zealand; Sophora section Edwardsia; species concepts
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Heenan, P.; Mitchell, C.; Houliston, G. Genetic Variation and Hybridisation among Eight Species of kōwhai (Sophora: Fabaceae) from New Zealand Revealed by Microsatellite Markers. Genes 2018, 9, 111.

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