Responses of Vietnamese Musa genotypes to Meloidogyne spp. under field conditions

in Nematology
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Abstract

Eight Vietnamese Musa genotypes, belonging to the AA, AAA, ABB and BB genome groups, as well as FHIA-01 (AAAB), FHIA-02 (AAAA) and Yangambi Km 5 (AAA) were evaluated for their host-plant response to Meloidogyne spp. under field conditions. FHIA-01, Ngu Thoc (AA), Tay (ABB) and Com Lua (AAA) were found to be less susceptible to Meloidogyne spp. FHIA-01, Ben Tre (AAA) and Bom (AAA) were less sensitive to knot-forming activity of Meloidogyne spp. The population dynamics of the nematodes were also assessed. The number of juveniles recovered from the roots was strongly influenced by the weather. During the cool dry season, the numbers dropped drastically. The number of egg-laying females in the roots was much less influenced by environmental conditions. Their numbers did not increase during the cooler and dry season. No effects of the nematodes on plant growth were found. The number of nematodes in the roots was related to the physiological stage of the plants, with most nematodes present during flowering.

Responses of Vietnamese Musa genotypes to Meloidogyne spp. under field conditions

in Nematology

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