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Journal of Arid Land  2016, Vol. 8 Issue (3): 453-461    DOI: 10.1007/s40333-016-0004-0
Research Articles     
Identity and distribution of weedy Pedicularis kansuensis Maxim. (Orobanchaceae) in Tianshan Mountains of Xinjiang: morphological, anatomical and molecular evidence
SUI Xiaolin1, Patrick KUSS2, LI Wenjun3,4, YANG Meiqing5, GUAN Kaiyun1,3, LI Airong1*
1 Yunnan Key Laboratory for Research and Development of Wild Plant Resources, Kunming Institute of Botany, Chinese
Academy of Sciences, Kunming 650201, China;
2 Institute of Systematic Botany, University of Zürich, Zürich 8008, Switzerland;
3 Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
4 University of Chinese Academy of Sciences, Beijing 100049, China;
5 World Agroforestry Centre, East and Central Asia Region, Kunming 650201, China
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Abstract  Weedy plants affect the biodiversity and ecosystem function as well as the crop and fodder plant production. However, adequate management requires detailed knowledge of the taxonomic identity of these plants. Here, we focused on a hemiparasitic Pedicularis species (Orobanchaceae), which occurs at high densities and results in significant biomass reductions in forage grasses in Bayanbulak Grassland of Xinjiang. The identity of this target species is not clear, with conflicting reports in publications and in herbarium collections. Hence, clear and management-relevant information on demography and reproductive ecology is difficult to be obtained from the literature. Therefore, we analyzed field and archival materials collected from Xinjiang in order to clarify the identity and distribution of the target species. Morphological analyses suggested that the populations at Bayanbulak Grassland should be Pedicularis kansuensis Maxim. rather than P. verticillata L. which has been accepted in the available literature. Phylogenetic analysis with a combination of three barcodes (matK, rbcL and trnH-psbA) uniting a clade of P. kansuensis and individuals from Bayanbulak Grassland populations with 100% bootstrap support, confirmed the target species to be P. kansuensis. Anatomical investigations and field observations showed that the target species is an annual or biennial herb, which also fits with the life cycle as P. kansuensis. Based on archive material and field observations, we verified that the distribution of P. kansuensis is mainly concentrated in the Tianshan Mountains of Xinjiang.

Key wordsarid lands of Central Asia      precipitation      stability      tendency      Mann-Kendall method     
Received: 29 July 2015      Published: 01 June 2016

The National Natural Science Foundation of China (U1303201, 31370512, 31400440)
The Youth Innovation Promotion Association of Chines Academy of Sciences
The Stiftung zur Förderung der Pflanzenkenntnis (Basel/CH; Foundation for the Promotion of Plant Knowledge)
The US National Science Foundation (DEB-1119098)

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Cite this article:

SUI Xiaolin, Patrick KUSS, LI Wenjun, YANG Meiqing, GUAN Kaiyun, LI Airong. Identity and distribution of weedy Pedicularis kansuensis Maxim. (Orobanchaceae) in Tianshan Mountains of Xinjiang: morphological, anatomical and molecular evidence. Journal of Arid Land, 2016, 8(3): 453-461.

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