期刊
PLANT BIOSYSTEMS
卷 147, 期 2, 页码 298-305出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/11263504.2013.772924
关键词
Chromosome counts; invasive plants; Italy; Oxalis pes-caprae L; pentaploidy; South Africa
Results are given and discussed of karyological investigations on wild (19) and cultivated (2) populations of the invasive South African geophyte Oxalis pes-caprae L. from 21 different localities (Italy 16, Switzerland 1, Morocco 1 and South Africa 3). Plants from naturalized populations growing wild in Italy and Morocco proved to always be pentaploid (2n=35), with small, metacentric or slightly sub-metacentric chromosomes. In plants cultivated in the Botanical Garden in Rome, both pentaploid and tetraploid (2n=28) numbers were found, the latter being the first record of tetraploid plants from Italy. All plants from South African wild populations included tetraploid plants; in one population (Kirstenbosch) pentaploid plants were also detected. It is suggested that pentaploid plants are possibly more widespread in the species' native area than is currently believed.
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