Chromosome numbers of populations of three varieties of Bidens pilosa in Taiwan

Botanical Studies
Ya-Lun Huang, Wen-Yuan Kao

Abstract

Hairy beggar-ticks (Bidens pilosa L.) is a common invasive plant in tropical and subtropical regions. The Flora of Taiwan listed three varieties of B. pilosa in Taiwan, var. minor, var. pilosa and var. radiata. Among the three varieties, var. radiata was the most recently, in 1970s, introduced into Taiwan. However, after its introduction into Taiwan, var. radiata has become dominant over the other two varieties and is considered a serious invasive plant in lowland of Taiwan. Our previous study showed that var. radiata is self-incompatible and the other two varieties are self-fertile. Could it be possible that different chromosome numbers contribute to the different breeding systems of these three varieties? In addition, the heterogeneities of traits of var. radiata were found higher than those of var. minor and var. pilosa. Is the phenomenon resulting from the hybridization between var. radiata with other varieties? We counted chromosome numbers of populations of these three varieties distributed in Taiwan and conducted hand pollination treatment between var. radiata (as pollen receiver) and var. minor or var. pilosa (as pollen donor) to provide answer for the aforementioned questions. No difference was found in chromosome numb...Continue Reading

References

Jun 23, 2009·Ecology·Urs A TreierHeinz Müller-Schärer
Nov 2, 2011·Annals of Botany·Mariska te BeestPetr Pysek

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Citations

Jul 7, 2015·Animal : an International Journal of Animal Bioscience·A CriscioneS Bordonaro

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