Life cycle and damage of the root-knot nematode Meloidogyne minor on potato, Solanum tuberosum

Wim Wesemael, Lirette M. Taning, Nicole Viaene, Maurice Moens

    Onderzoeksoutput: Bijdrage aan tijdschriftA1: Web of Science-artikel

    4811 Downloads (Pure)

    Uittreksel

    Meloidogyne minor is a root-knot nematode reported in Belgium, Ireland, The Netherlands, Portugal, United Kingdom,
    Chile and the United States. It is found in sport fields and golf courses where it causes the yellow patch disease. However, M. minor
    has also been detected in potato fields in The Netherlands and the UK and may pose a threat for potato cultivation. Therefore, the life
    cycle and damage of M. minor on potato cv. Bintje were examined under controlled conditions. To assess its life cycle, young potato
    plants were inoculated with freshly hatched second-stage juveniles (J2). The developmental stages of M. minor were recorded at weekly
    intervals after inoculation until second generation J2 were detected. One week after inoculation, only vermiform juveniles were found
    in the roots. All juveniles were swollen after 3 weeks and the first adult females were observed. Egg masses were seen after 6 weeks
    together with second generation J2. The number of degree days for M. minor to complete its life cycle was calculated using a base
    temperature of 5°C (DD5); between 606 and 727 DD5 were needed to complete the life cycle. Damage development of M. minor on
    potato was examined in a pot experiment with different inoculation densities. Symptoms (galling on the tubers) were similar to those
    caused by M. chitwoodi and M. fallax. At initial population densities (Pi) of 10 J2 (100 cm3 soil)−1 and more, tubers showed galls.
    Severely damaged potato tubers were observed at Pi 50 J2 (100 cm3 soil)−1 and a damage threshold of 41 J2 (100 cm3 soil)−1 was
    calculated. An in vitro test showed that five, commonly grown, potato cultivars were good hosts for M. minor. Based on our results,
    M. minor is able to develop on potato and cause severe damage at low initial population densities. Therefore, further spread of this
    nematode in agricultural fields should be avoided.
    TaalEngels
    TijdschriftNematology
    Volume16
    Pagina's (van-tot)185-192
    ISSN1388-5545
    StatusGepubliceerd - 2014

    Dit citeren