Studies on influence of poplar canker and pine wood nematode on the electrical indexes of tree stem

对杨树溃疡病及松材线虫病对树木电指标的影响进行研究。结果表明:杨树溃疡病胁迫下,毛白杨扦插苗POD酶活性先增大后减小,PPO酶活性持续增大,树木干部电容和单位电容呈减小趋势,而树木干部阻抗呈增大趋势,最先表现出统计学差异性的指标是POD酶活性,其次为树木干部电容,之后为树体干部阻抗,最后是PPO酶活性;树木干部电容和单位电容与马尾松枯针率均有显著的正相关关系,同时利用树体干部电容0.5nF为阈值,判断马尾松是否感染松材线虫的准确率可达89.26%。...

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Bibliographic Details
Published inLinye kexue (1979) Vol. 42; no. 12
Main Author Liang Jun, Qu Zhiwei, Liu Huiwen
Format Journal Article
LanguageChinese
Published 01.12.2006
Subjects
BURSAPHELENCHUS XYLOPHILUS
CONDUCTIVIDAD ELECTRICA
CONDUCTIVITE ELECTRIQUE
ELECTRICAL CONDUCTIVITY
http://www.fao.org/aos/agrovoc#c_24022
http://www.fao.org/aos/agrovoc#c_33632
http://www.fao.org/aos/agrovoc#c_6116
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Summary:对杨树溃疡病及松材线虫病对树木电指标的影响进行研究。结果表明:杨树溃疡病胁迫下,毛白杨扦插苗POD酶活性先增大后减小,PPO酶活性持续增大,树木干部电容和单位电容呈减小趋势,而树木干部阻抗呈增大趋势,最先表现出统计学差异性的指标是POD酶活性,其次为树木干部电容,之后为树体干部阻抗,最后是PPO酶活性;树木干部电容和单位电容与马尾松枯针率均有显著的正相关关系,同时利用树体干部电容0.5nF为阈值,判断马尾松是否感染松材线虫的准确率可达89.26%。
Bibliography:2007003000
H10
ISSN:1001-7488