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Journal of Plant Protection and Pathology
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Maareg, M., El-Gindi, A., ElShalaby, M., Yassin, A. (2009). EVALUATION OF CERTAIN SUGARBEET VARIETIES FOR THEIR PRODUCTIVITY AND SUSCEPTIBILITY TO Meloidogyne javanica ROOT-KNOT NEMATODE. Journal of Plant Protection and Pathology, 34(6), 6851-6861. doi: 10.21608/jppp.2009.209496
M. F. Maareg; A. El-Gindi; Mona E. ElShalaby; Abeer S. Yassin. "EVALUATION OF CERTAIN SUGARBEET VARIETIES FOR THEIR PRODUCTIVITY AND SUSCEPTIBILITY TO Meloidogyne javanica ROOT-KNOT NEMATODE". Journal of Plant Protection and Pathology, 34, 6, 2009, 6851-6861. doi: 10.21608/jppp.2009.209496
Maareg, M., El-Gindi, A., ElShalaby, M., Yassin, A. (2009). 'EVALUATION OF CERTAIN SUGARBEET VARIETIES FOR THEIR PRODUCTIVITY AND SUSCEPTIBILITY TO Meloidogyne javanica ROOT-KNOT NEMATODE', Journal of Plant Protection and Pathology, 34(6), pp. 6851-6861. doi: 10.21608/jppp.2009.209496
Maareg, M., El-Gindi, A., ElShalaby, M., Yassin, A. EVALUATION OF CERTAIN SUGARBEET VARIETIES FOR THEIR PRODUCTIVITY AND SUSCEPTIBILITY TO Meloidogyne javanica ROOT-KNOT NEMATODE. Journal of Plant Protection and Pathology, 2009; 34(6): 6851-6861. doi: 10.21608/jppp.2009.209496

EVALUATION OF CERTAIN SUGARBEET VARIETIES FOR THEIR PRODUCTIVITY AND SUSCEPTIBILITY TO Meloidogyne javanica ROOT-KNOT NEMATODE

Article 6, Volume 34, Issue 6, June 2009, Page 6851-6861  XML PDF (741.22 K)
Document Type: Original Article
DOI: 10.21608/jppp.2009.209496
Authors
M. F. Maareg1; A. El-Gindi2; Mona E. ElShalaby2; Abeer S. Yassin1
1Department of Plant Protection, Sugar Crops, Research Institute, Agricultural Research Center, Giza, Egypt
2Department of Agricultural Zoology and Nematology, Faculty of Agriculture, Cairo University, Giza, Egypt
Abstract
Seventeen varieties of sugarbeet either as monogerm or multigerm were screened for their productivity and susceptibility or resistance against the infection by Meloidogyne javanica. All the tested varieties varied in the degree of nematode development and reproduction. Statistical differences in sugarbeet varieties are found between infected and non infected plants in yields of roots, leaves and sugar except, Barca, Pamela and Toro varieties which were not significantly damaged in all these parameters. All evaluated sugarbeet varieties were also significant decreased in percentages of sucrose, total soluble solids and purity except, Esperanza and Toro varieties which were not significantly decreased in total soluble solids and purity percentages, respectively. Four host categories systems were suggested in this study. Root damage index is an average of gall index, gall size and gall area. The combination of the nematode reproduction and root damage index is termed as susceptibility rate. Host vigor percentage is an average of root yield potential and sucrose and total soluble solids percentages. However, host-parasite index  as a new term is suggested which expresses the amount of crop damage in yields (roots, leaves and sugar) and quality characters (sucrose, total soluble solids and purity percentages) by nematode infection. The host-parasite index is more suitable because of the generally high correlation between these parameters and crop damage. Thus the Barca and Gloria varieties were rated as a tolerant and Hilma and Helios as highly susceptible, 8 as moderately susceptible and 5 as low susceptible to M. javanica root-knot nematode infection in this investigation.
Keywords
sugarbeet varieties; Meloidogyne javanica; root-knot nematode; susceptibility; host-parasite; host vigor; root damage
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