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Cytological Mechanism of Solidago canadensis Invasion
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ZHANG Zhong-xin1, 2, ZHANG Xiao-ping 1, 2, SHAO Jian-wen1, 2, LIU Hui-jun1, 2 , YANG Kai-jun1, 2, CAO Jing-jing1, 2
(1. College of Life Sciences, Anhui Normal University, Wuhu 241000, China£»2. Anhi Key Laboratory of Biotic Environment and Ecological Security, Anhui Normal University, Wuhu 241000, China)
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Abstract:Chromosome numbers of invasive plant Solidago canadensis L.( Asteraceae) and native plant S. decurrens Lour.were counted. Karyotypes of two species were analysed. The results are as follows: Solidago canadensis L. 2n=6x=54£½46m+8sm(0-6SAT), belongings to the "2A" type; S. decurrens Lour. 2n=2x=18=16m + 2sm(0-2SAT), belongings to the "1A" type. The chromosome base number in Solidago is x=9. Polyploid may be probably responsible for inner power of invasion of S. canadensis L.
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