Evaluation of Musa Host Plant Response Using Nematode Densities and Damage Indices

Authors

  • P. R. Speijer
  • F. Ssango

Keywords:

Helicotylenchus multicinctus, Musa, Radopholus similis, Resistance, Sensitivity, Susceptibility, Tolerance

Abstract

Host plant response of seven Musa accessions to Radopholus similis and Helicotylenchus multicinctus was evaluated at Namulonge, Uganda. Suckers detached from first cycle harvested plants grown in inoculated and not inoculated fields were indexed for root and corm damage. Nematodes were extracted from the indexed roots. Relationships between root damage parameters and nematode population densities were examined using correlation and principal component analysis. Damage parameters were of major importance. Three groups of cultivars could be statistically differentiated. The cultivars Gros Michel (Musa AAA), Pisang Awak (Musa ABB), Mbwazirume (Musa AAA, highland banana clone set Nakitembe) and Sukali Ndizi (Musa AB) were more tolerant and less susceptible to nematode attack. Cultivars Valery (Musa AAA) and Obino lEwai (Musa AAB) were more sensitive and susceptible to nematode attack (P 0.05). Cultivar Nabusa (Musa AAA, highland banana clone set Nfuuka) was intermediate and did not dif

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Published

1999-12-01

Issue

Section

Articles