Sunflower (Helianthus annuus L.) recently was reintroduced to Mozambique because of renewed interest in oil-seed production for domestic consumption. In April 1997, disease surveys were carried out in two fields in southern Mozambique (Maputo region). Several plants of Pan 735, a South African cultivar, showed yellowing of the leaves and stunting. These plants wilted during the day but recovered their turgidity at night; diseased plants were easily pulled from the soil due to almost complete destruction of the root system. Numerous galls were found on affected roots and Meloidogyne javanica (Treub) Chitwood and M. incognita (Kofoid & White) Chitwood were identified. M. incognita was more prevalent than M. javanica. This is the first report of root-knot nematode on sunflower in Mozambique.
First report of root-knot nematodes (Meloidogyne spp.) on sunflowers in Mozambique
ZAZZERINI, Antonio;TOSI, Laura;
1997
Abstract
Sunflower (Helianthus annuus L.) recently was reintroduced to Mozambique because of renewed interest in oil-seed production for domestic consumption. In April 1997, disease surveys were carried out in two fields in southern Mozambique (Maputo region). Several plants of Pan 735, a South African cultivar, showed yellowing of the leaves and stunting. These plants wilted during the day but recovered their turgidity at night; diseased plants were easily pulled from the soil due to almost complete destruction of the root system. Numerous galls were found on affected roots and Meloidogyne javanica (Treub) Chitwood and M. incognita (Kofoid & White) Chitwood were identified. M. incognita was more prevalent than M. javanica. This is the first report of root-knot nematode on sunflower in Mozambique.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
