广州野生加拿大一枝黄花的鉴定

Identification of Solidago canadensis L. in Guangzhou

本文对2008年10月在广州发现的野生一枝黄花属植物进行了形态鉴定和分子鉴定,结果表明该植物形态特征与加拿大一枝黄花(Solidago canadensis L.)完全吻合,分子鉴定结果表明ITS区段序列同源性也达到100%,因此确定该一枝黄花属植物为外来危险性杂草加拿大一枝黄花。并对加拿大一枝黄花与广州本地种一枝黄花(S.decurrens Lour.)在形态上进行了比较。

In October 2008, the plants classified as Solidago L. were discovered in Guangzhou City. The researches of Morphological identification and Molecular identification of the plant were conducted. The results showed that the Morphological characteristics of the plant tallies with that of Solidago canadens/s L. In another way, the Molecular identification result showed that the sequence homology of the Internal Transcribed Spacer （ITS） is 100% in the plant and Solidago canadensis L. So, the plant was identified as Solidago canadensis L. which is a worst exotic weed Species. The external morphological characteristics of S. canadensis and S. decurrens were compared in this article.