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不同营养元素对桉树枝枯病菌菌丝生长的影响 被引量:3

Effect of Different Nutrition Elements on Mycelia Growth of Lasiodiplodia theobromae
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摘要 为明确不同营养元素对桉树枝枯病菌(Lasiodiplodia theobromae)菌丝生长指标的影响,采用不同N、P、K、Ca、Mg、B、Cu、Zn、Fe、Mn元素及不同浓度对桉树枝枯病菌菌丝进行培养,观测菌落大小、菌落长势、生长速率和菌丝生长指数。结果表明:(NH_4)_2CO、KCl、CaCl_2、MgSO_4、H_3BO_3和MnSO_4均能促进菌丝生长,且(NH_4)_2CO、KCl和H_3BO_3在2μmol/L处理时菌丝生长达到最高峰,密度最大;CaCl_2和MnSO_4处理随浓度增加,菌丝生长加快,在8μmol/L时,菌落直径达最大;CuSO_4、ZnSO_4和FeSO_4能抑制菌丝生长,随元素浓度增高,菌丝生长减慢,密度小、稀疏;低浓度KH_2PO_4处理能促进菌丝生长,在高浓度时却能抑制菌丝生长。 In order to study the effect of different nutrition elements on mycelium growth ofLasiodiplodia theobromae, the mycelia growth ofLasiodiplodia theobromae was cultivated by 10 kinds of nutrition elements and different concentrations. The colony growth diameter, colony growth, growth rate and mycelial growth index were observed. The result showed that the(NH4)2CO, KCl, CaCl2, MgSO4, H3BO3 and MnSO4 elements can promote the growth of mycelium, , the mycelial growth reached its peak and the density was the highest in the solution of(NH4)2 CO, KCl and H3BO3 at 2 μmol/L. The mycelial growth increased rapidly with the increase of concentration in the solution of CaCl2 and MnSO4, and the maximum diameter exitedat 8 μmol/L. CuSO4,ZnSO4 and FeSO4 can inhibit the growth of mycelium, the mycelium growth slowed down with the increase of concentration, density was small and sparse. The KH2PO4 with low concentration can promote the growth of mycelium and can inhibit the growth of mycelium with high concentration.
作者 廖旺姣 朱英芝 邹东霞 黄乃秀 吴耀军 LIAO Wang-jiao;ZHU Ying-zhi;ZOU Dong-xia;HUANG Nai-xiu;WU Yao-jun(Guangxi Forestry Research Institute, Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, Key Laboratory of Central South Fast-growing Timber Cultivation of Forestry Ministry of China, Nanning 530002, China;Laboratory of Plant Virology,South China Agricultural University, Guangzhou, Guangdong 510642, China)
出处 《广西林业科学》 2017年第1期80-83,共4页 Guangxi Forestry Science
基金 广西优良用材林资源培育重点实验室自主课题(14-A-04-01)
关键词 桉树枝枯病菌 营养元素 生长速率 Lasiodiplodia theobromae nutrition element growth rate
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