小反刍兽疫(Peste des petits ruminants, PPR)是由小反刍兽疫病毒(Peste des petits ruminants virus, PPRV)感染小反刍兽的一种严重的急性、烈性、接触性传染病,以高热、口炎、胃炎、腹泻和肺炎为特征。PPRV属于副粘病毒科麻疹病毒属,...
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小反刍兽疫(Peste des petits ruminants, PPR)是由小反刍兽疫病毒(Peste des petits ruminants virus, PPRV)感染小反刍兽的一种严重的急性、烈性、接触性传染病,以高热、口炎、胃炎、腹泻和肺炎为特征。PPRV属于副粘病毒科麻疹病毒属,PPRV只有一个血清型。PPRV基因组为单股负链RNA,大小为15948nt,6个基因排列顺序为3'-N-P-M-F-H-L-5',依次编码的6个结构蛋白为核衣壳蛋白(N)、磷蛋白(P)、基质蛋白(M)、融合蛋白(F)、
[Objective] The aim was to study the germination behavior of Tamarix elongata *** natural conditions.[Method] By using *** as the experimental materials,the seed morphology and germination characteristics were observe...
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[Objective] The aim was to study the germination behavior of Tamarix elongata *** natural conditions.[Method] By using *** as the experimental materials,the seed morphology and germination characteristics were observed and measured.[Result] ① *** seed was 1 011.96 μm in length and 399.94 μm in width,and the thousand-seed weight was 38.66 mg;② the germination rate,germination energy,germination index and germination coefficient of *** seeds were 95.56%,46.67%,20.25 and 56.86 respectively;③ there were no significant differences in morphology and germination characteristics among the three different geographical populations.[Conclusion] The present research will provide reference for the introduction and breeding of *** as well as the protection of sand dune vegetation.
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