Please use this identifier to cite or link to this item: https://doi.org/10.1111/j.1095-8339.2006.00515.x
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dc.titlePolyploidy in invasive plant species of Singapore
dc.contributor.authorPandit, M.K.
dc.contributor.authorTan, H.T.W.
dc.contributor.authorBisht, M.S.
dc.date.accessioned2014-12-02T06:53:12Z
dc.date.available2014-12-02T06:53:12Z
dc.date.issued2006-07
dc.identifier.citationPandit, M.K., Tan, H.T.W., Bisht, M.S. (2006-07). Polyploidy in invasive plant species of Singapore. Botanical Journal of the Linnean Society 151 (3) : 395-403. ScholarBank@NUS Repository. https://doi.org/10.1111/j.1095-8339.2006.00515.x
dc.identifier.issn00244074
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/114374
dc.description.abstractSingapore is a recognized global hotspot for invasive species and many introduced plant species have become major weeds there. Some of the common invasive taxa, such as Asystasia gangetica ssp. micrantha, Mimosa pigra, Neptunia plena, Panicum maximum, and Urochloa mutica, are spread over large areas and dominate the indigenous flora in some habitats. In a study aimed at understanding the relationship between polyploidy and invasiveness, we show that all the investigated invasive taxa are polyploids. A. gangetica ssp. micrantha, N. plena, and P. maximum vary in chromosome number and ploidy level across the world, but we recorded only one chromosome count for each of these species in Singapore. Similarly, the cytology of M. pigra and U. mutica also revealed that these species are polyploid, each with only one chromosome number across all populations. The results indicate that one polyploid line in each of these species has been selected favourably and has become invasive. We also show that all the species exhibit normal male meiosis and possess high percentages of pollen fertility. Based on the present study and an analysis of previously reported ploidy levels, we suggest that these taxa are probably of allopolyploid origin. We conclude that polyploidy and an effective reproductive system are a perfect mix for successful invasion by these species in Singapore. © 2006 The Linnean Society of London.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1111/j.1095-8339.2006.00515.x
dc.sourceScopus
dc.subjectAllopolyploidy
dc.subjectNon-indigenous species
dc.typeArticle
dc.contributor.departmentUNIVERSITY SCHOLARS PROGRAMME
dc.contributor.departmentBIOLOGICAL SCIENCES
dc.description.doi10.1111/j.1095-8339.2006.00515.x
dc.description.sourcetitleBotanical Journal of the Linnean Society
dc.description.volume151
dc.description.issue3
dc.description.page395-403
dc.description.codenBJLSA
dc.identifier.isiut000238579600009
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