【作者】 马海宾； 梁军； 吕全； 张星耀； 康丽华；

【Author】 MA Hai-bin1,2,LIANG Jun1,Lv Quan1,ZHANG Xing-yao1(1.Research Institute of Forest Ecology, Environment and Protection, CAF, Key Lab of Forest Ecology and Forest Protection of State Forestry Administration, Beijing 100091,China;2.Research Institute of Tropical Forestry, CAF, Guangzhou 510520, China)

【机构】 中国林业科学研究院热带林业研究所； 中国林业科学研究院森林生态环境与保护研究所；

【摘要】 通过人工接种方法,比较了供试松材线虫和拟松材线虫株系在黑松枝段内的迁移扩散和繁殖能力。结果表明,与拟松材线虫相比,松材线虫在黑松枝段内迁移能力更强,表现在以更快的速度和更大的种群数量穿过黑松枝段。多数松材线虫株系在黑松枝段内的繁殖力高于拟松材线虫,并且多数松材线虫株系繁殖数量同其中三个拟松材线虫株系繁殖数量差异显著。结合松材线虫株系分泌的纤维素酶系活性明显高于拟松材线虫株系的纤维素酶系,纤维素酶可能是线虫在寄主体内迁移扩散的主要驱动力之一。更多还原

【Abstract】 The dispersal and propagation ability of B.xylophilus and B.mucronatus in Pinus thunbergii shoot section were analyzed with artificial inoculation.Compared with B.mucronatus, B.xylophilus passed through the shoot section of P.thunbergii with a higher speed and less time.The numbers of nematode passing through the section at first were not significantly different among the most strains of nematodes including B.mucronatus, although the numbers of most strains of B.xylophilus were much more than that of B.mucronatus.The reproduction numbers of B.xylophilus were more than that of B.mucronatus in the section for 20 days and all the numbers of B.xylophilus strains were significantly different with the numbers of three strains of B.mucronatus.Considering the same phenomena in the investigation of the cellulase activity of both species nematodes above, the cellulase probably was one of the driving for the nematode dispersal inside the host tree.更多还原