Interactions of Ralstonia solanacearum and Pectobacterium carotovorum with Meloidogyne incognita on potato |
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Authors: | Zaki A Siddiqui Mohd Shehzad Subha Alam |
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Institution: | 1. Department of Botany, Aligarh Muslim University, Aligarh, 202002, India.zaki_63@yahoo.co.in;3. Department of Botany, Aligarh Muslim University, Aligarh, 202002, India. |
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Abstract: | Effect of interactions of Meloidogyne incognita with Ralstonia solanacearum and interaction of M. incognita with Pectobacterium carotovorum were studied in sequential and simultaneous inoculations on potato (Solanum tuberosum). Inoculation of M. incognita caused a lesser reduction in plant growth than caused by R. solanacearum. Inoculation of M. incognita plus R. solanacearum caused a greater reduction in plant growth than the damage caused by either pathogen. Inoculation of M. incognita prior to R. solanacearum resulted in a greater reduction in plant growth than R. solanacearum was inoculated prior to M. incognita. However, inoculation of M. incognita or P. carotovorum caused similar reduction in plant growth. Inoculation of P. carotovorum prior to M. incognita caused lesser reduction in plant growth than simultaneous inoculation of both pathogens. Inoculation of M. incognita caused galling in potato roots but the size of galls was small. Inoculation of P. carotovorum or R. solanacearum with M. incognita had adverse effect on galling and nematode multiplication. Wilting or soft rot index was 3 when R. solanacearum or P. carotovorum was inoculated alone. In other treatments, where R. solanacearum or P. carotovorum was inoculated with M. incognita, wilting or soft rot indices were 5. |
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Keywords: | interactions Meloidogyne Pectobacterium Ralstonia Solanum tuberosum |
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