Identification of Pathogen Colletotrichum boninense from Cymbidium goeringii and Its Biological Characteristics

doi:10.16420/j.issn.0513-353x.2015-0084

ACTA HORTICULTURAE SINICA ›› 2015, Vol. 42 ›› Issue (10): 1993-2001.doi: 10.16420/j.issn.0513-353x.2015-0084

• Ornamental Plants • Previous Articles Next Articles

Identification of Pathogen Colletotrichum boninense from Cymbidium goeringii and Its Biological Characteristics

ZHOU Ping-lan1,4，TANG Xin-ke4，LONG Yue-lin2,*，and ZHOU Xiao-mao2,3,*

1College of Horticulture and Landscape，Hunan Agricultural University，Changsha 410128，China；2College of Plant Protection，Hunan Agricultural University，Changsha 410128，China；3Center of Biotechnology Research，Hunan Academy of Agricultural Sciences，Changsha 410125，China；4School of Life Science，Hunan University of Science and Technology，Xiangtan，Hunan 411201，China

Online:2015-10-25 Published:2015-10-25

Abstract

Abstract:

Pathogen causing anthracnose on Cymbidium goeringii in Hunan was isolated and identified，and the impact of nutritional and non-nutritional factors on its growth was analyzed. The results showed that the pathogen of anthracnose on Cymbidium goeringii was Colletotrichum boninense Moriwaki，Sato & Tsukiboshi. This strain grew well on media of PDA，PSA and CSA. For carbon sources，it grew better in glucose than in sucrose，maltose or fructose. Yeast extract，peptone and KNO3 were the better organic and inorganic nitrogen sources，respectively. The optimal acidity of culture medium was pH 5.0–8.0，light or darkness. Its hyphae could extend at 15–35 ℃，and the optimum temperature was 25 ℃. The lethal temperatures of hyphae and spores were 48 ℃ and 50 ℃ in 20 min，respectively.

Key words: Cymbidium goeringii, anthracnose, Colletotrichum boninense, biological characteristic

CLC Number:

S 682.31

ZHOU Ping-lan1,4，TANG Xin-ke4，LONG Yue-lin2,*，and ZHOU Xiao-mao2,3,*. Identification of Pathogen Colletotrichum boninense from Cymbidium goeringii and Its Biological Characteristics[J]. ACTA HORTICULTURAE SINICA, 2015, 42(10): 1993-2001.

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Identification of Pathogen Colletotrichum boninense from Cymbidium goeringii and Its Biological Characteristics

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