Occurrence and impact of Apocynum venetum rust (Melampsora apocyni) in Altay, Xinjiang

Yan-ru Lan; Peng Gao; Qi-tang Liu; Jing-feng Huang; Ting-yu Duan

doi:10.11829/j.issn.1001-0629.2017-0078

Pratacultural Science > 2018 > 12(1): 85-92. > DOI: 10.11829/j.issn.1001-0629.2017-0078

Yan-ru Lan, Peng Gao, Qi-tang Liu, Jing-feng Huang, Ting-yu Duan. Occurrence and impact of Apocynum venetum rust (Melampsora apocyni) in Altay, Xinjiang[J]. Pratacultural Science, 2018, 12(1): 85-92. DOI: 10.11829/j.issn.1001-0629.2017-0078

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Occurrence and impact of Apocynum venetum rust (Melampsora apocyni) in Altay, Xinjiang

1.
State Key Laboratory of Grassland Agro-ecosystmes, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture,College of Pastoral Agriculture Science and Technology Lanzhou University, Lanzhou 730020, Gansu, China
2.
Gaubau Green Industry Limited Company, Altay 836509, Xinjiang, China

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Received Date: February 22, 2017
Published Date: January 19, 2018

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Abstract

Abstract

The rust caused by Melampsora apocyni is one of the main factors limiting Apocynum venetum industrialization. We investigated the occurrence of A. venetum rust in two wild (Yanhu, Honggou) and two cultivated (the sixth and seventh years) sites in 2016 and analyzed the correlation between the disease and meteorological factors and habitat. The results showed that the severity of rust disease increased gradually with the length of the plant growing season. The incidence of rust disease on A. venetum in Yanhu and Honggou reached a peak on July 18 and August 3, with a disease incidence was 86.47% and 87.60%, respectively. At the end of the growing season, the disease incidence decreased gradually to 75.97% and 53.78%, respectively. In the cultivated population, the incidence of rust disease on A. venetum in the sixth and seventh years reached a peak on August 7 and July 23, with a disease incidence of 25.52% and 31.49%, respectively. The disease index in the wild A. venetum population was 31.39~46.18, which was 6.51~6.95 times that in cultivated A. venetum. The area under the disease progress curve (AUDPC) in the wild A. venetum population was 651.74~1 522.31, which was 4.37~9.69 times that in cultivated A. venetum. The occurrence of rust disease in wild A. venetum was significantly positively correlated with rainfall and total vegetation coverage and negatively correlated with plant diversity (P<0.05). The occurrence of rust disease in cultivated A. venetum was significantly positively correlated with A. venetum coverage and negatively correlated with plant diversity (P<0.05).
- Apocynum venetum,
- rust,
- disease incidence,
- disease index,
- meteorological factors,
- habitat

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References (49)

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Occurrence and impact of Apocynum venetum rust (Melampsora apocyni) in Altay, Xinjiang

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