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Morphological and molecular identification of three populations of Hirschmanniella mucronata occurring on vegetables in Hainan Province

丁晓帆  CHEN Wen-hui  ZHOU Shan-hong  LIU Xiao-mei  LIU Wen-bo  
【摘要】:Morphological and molecular identification were made among 3 populations ofHirschmanniella,occurring onbitter gourd of QiongzhongMaoyang Town(QGS32),bitter gourd of QiongzhongHongmao Farm(QGS33),andcowpea of Dongfang(QGS43)in Hainan Province.The results showed that some morphometrics of 3 populations varied slightly from the original descriptions of type specimen.However,most of other morphometrics were within the specific range.Molecular comparisons and analysis of 3 populations of Hirschmanniellabased on ribosomal internal transcribed spacers(ITS)and D2D3 expansion segments of 28 S rRNA gene were studied.It was found that fragments length of ITS and D2D3 region of 3 populations were about 770 bp and 780 bp,respectively.The homogeneities compared with other H.mucronatapopulations(DQ309589.1,KF201167.1)in GenBank were 99%and 99-100%.Phylogenetic tree analysis revealed that 3 populations and H.mucronatalocated at the same node,suggesting that 3 populations occurring on vegetables in Hainan Province were identified as H.mucronata(Das,1960)Luc Goodey,1963.

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