Comparison of damage levels caused by Radopholus similis and Helicotylenchus multicinctus on bananas in Uganda
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Date
2000
Journal Title
Journal ISSN
Volume Title
Publisher
Annals of Applied Biology
Abstract
Field surveys were done in 1997 and 1998 in Masaka district, Uganda, an area which is experiencing a
decline in banana production, to assess level of damage caused by nematodes Radopholus similis and
Helicotylenchus multicinctus at farm level. Ten farms within a radius of 2 km were selected and nematode
damage assessed. The major nematodes encountered were Pratylenchus goodeyi, R. similis and H.
multicinctus. P. goodeyi and H. multicinctus were more abundant than R. similis but R. similis had a
stronger and significant correlation with root damage. A subsequent pot trial examined pathogenicities of
R. similis and H. multicinctus in pure and mixed cultures on tissue cultured-banana plantlets. R. similis
alone and in mixed population reduced root fresh weight significantly, and the percentage of root necrosis
ranged between 22.8-41.6% and 18.3-45.5% for March 1998 and March 1999 trials, respectively. The
difference in damage caused by R. similis alone and in mixed population was not statistically significant,
and was higher than the damage caused by H. multicinctus alone. There were no significant differences in
pathogenicity among the R. similis isolates from different parts of Uganda.
Description
Keywords
Root cortex, Nematodes, Dead roots, Isolates
Citation
Barekye, A., Kashaija, I. N., Tushemereirwe, W. K., & Adipala, E. (2000). Comparison of damage levels caused by Radopholus similis and Helicotylenchus multicinctus on bananas in Uganda. Annals of Applied Biology, 137(3), 273-278.