不同温度、pH值和接种浓度对青枯菌在尾巨桉苗木根部吸附和侵入的影响

doi:10.11707/j.1001-7488.20101213

Scientia Silvae Sinicae ›› 2010, Vol. 46 ›› Issue (12): 80-85.doi: 10.11707/j.1001-7488.20101213

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Influences of Temperatures,pH Values and Inoculum Concentrations on the Adsorption and Ingression of Ralstonia solanacearum to Eucalyptus urophylla× E. grandis Seedling Root

Wang Shenkun¹, Wang Jun², Kang Lihua¹, Xu Daping¹

1. Research Institute of Tropical Forest, Chinese Academy of Forestry Guangzhou 510520;2. College of Forest, Southern China Agricultural University Guangzhou 510642

Received:2010-03-03 Revised:2010-09-17 Online:2010-12-25 Published:2010-12-25

Abstract

Abstract:

This experiment,the influences of temperatures,pH values and inoculum concentrations on the number of adsorption and ingression of Ralstonia solanacearum to Eucalyptus urophylla × E. grandis root. The optimum temperature for R. solanacearum to adsorb to and ingress in the Eucalyptus root was 30 ℃.The more suitable pH value for the adsorption and ingression was 6.0 or 7.0. Number of the adsorption and ingression was very high under both 3.0×10⁸units ·mL^-1 and 3.0×10⁹ units ·mL^-1 inoculum concentrations. Higher concentration of R. solanacearum was favorable for its adsorption and ingression,but the number of adsorption and ingression did not increase accordingly when the concentration of bacteria was too high. The best conditions for R. solanacearum adsorption and ingression were 30 ℃,pH value 6.0 or 7.0 and 3.0×10⁸ units ·mL^-1 bacterial concentration or higher.

Key words: Ralstonia solanacearum, Eucalyptus urophylla×, E. grandis, temperature, pH value, inoculum concentration, adsorption, ingression

CLC Number:

S792.39

Wang Shenkun;Wang Jun;Kang Lihua;Xu Daping. Influences of Temperatures,pH Values and Inoculum Concentrations on the Adsorption and Ingression of Ralstonia solanacearum to Eucalyptus urophylla× E. grandis Seedling Root[J]. Scientia Silvae Sinicae, 2010, 46(12): 80-85.

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Influences of Temperatures,pH Values and Inoculum Concentrations on the Adsorption and Ingression of Ralstonia solanacearum to Eucalyptus urophylla× E. grandis Seedling Root

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