A new record species Heterodera ripae was found in the rhizosphere soil of nettle(Urtica sp.) on the bank of the Mangniu River in Shenyang City,Liaoning Province,China.The new record species can be characterized by vu...A new record species Heterodera ripae was found in the rhizosphere soil of nettle(Urtica sp.) on the bank of the Mangniu River in Shenyang City,Liaoning Province,China.The new record species can be characterized by vulval cone bifenestrate with circular or subcircular semifenestrae,vulval slit length averaging 34.2 μm,vulval bridge mostly broad,underbridge weak,bullae absent;the second-stage larvae stylet knobs rather wide and slightly projecting anteriorly,tail length averaging 43.7 μm and hyaline region length averaging 22.3 μm.展开更多
Dear Editor,The pinewood nematode(PWN)Bursaphelenchus xylophilus(Steiner and Buhrer,1934)Nickle,1970,the causal agent of Pine Wilt Disease(PWD),is an invasive species known to have originated from North America,where ...Dear Editor,The pinewood nematode(PWN)Bursaphelenchus xylophilus(Steiner and Buhrer,1934)Nickle,1970,the causal agent of Pine Wilt Disease(PWD),is an invasive species known to have originated from North America,where it was not reported to cause large-scale outbreaks(Wingfield et al.,1984).Ecological conditions encountered by B.xylophilus in China are different from conditions in its native North American range.Ecological differences,together with short generation times,improve the chances that changes in展开更多
基金Special Fund for Agro-scientific Research in the public Interest (200903040-03)China Agriculture Research System(CARS-04)
文摘A new record species Heterodera ripae was found in the rhizosphere soil of nettle(Urtica sp.) on the bank of the Mangniu River in Shenyang City,Liaoning Province,China.The new record species can be characterized by vulval cone bifenestrate with circular or subcircular semifenestrae,vulval slit length averaging 34.2 μm,vulval bridge mostly broad,underbridge weak,bullae absent;the second-stage larvae stylet knobs rather wide and slightly projecting anteriorly,tail length averaging 43.7 μm and hyaline region length averaging 22.3 μm.
基金supported by Forestry Industry Research Special Funds for Public Welfare Projects (201004003)National Basic Research Program of China(2009CB119200, 2012CB114105)+2 种基金National Natural Science Foundation of China(31272323, 31221091)the CAS Knowledge Innovation Key Research Program(KSCX2EW-J-2)the European 7th Frame Project(REPHRAME)
文摘Dear Editor,The pinewood nematode(PWN)Bursaphelenchus xylophilus(Steiner and Buhrer,1934)Nickle,1970,the causal agent of Pine Wilt Disease(PWD),is an invasive species known to have originated from North America,where it was not reported to cause large-scale outbreaks(Wingfield et al.,1984).Ecological conditions encountered by B.xylophilus in China are different from conditions in its native North American range.Ecological differences,together with short generation times,improve the chances that changes in
