Behaviour of the main okra (Abelmoschus spp.) cultivars grown in Côte d’Ivoire to root-knot nematodes (Meloidogyne incognita (Kofoid and White, 1919)) under greenhouse conditions | Odziv glavnih sort jedilnega osleza (Abelmoschus spp.) gojenega v Slonokoščeni obali na ogorčico vozlanja korenin (Meloidogyne incognita (Kofoid in White, 1919)) v poskusu v rastlinjaku

Inglés. Root-knot nematodes are the main factor limiting okra production in Côte d’Ivoire. Using resistant cultivars appears to be one of the best strategies for managing root-knot nematodes. The aim of this study was to determine the behaviour of the main okra cultivars grown in Côte d’Ivoire against Meloidogyne incognita. Seeds of 20 okra cultivars were planted in pots under greenhouse conditions. Fourteen-day-old plants of okra cultivars were inoculated with 500 second-stage juveniles of M. incognita. Agronomic and pathological parameters were determined. The Basanti cultivar exhibited the highest gall index (5.0/plant), final population (7938 individuals/plant), and reproductive factor (15.88/plant) of M. incognita, whereas the Hiré cultivar showed one of the lowest gall indexes (3.0/plant), final population (912 individuals/plant), and reproductive factor (1.8/plant). Two groups of cultivars were identified based on their susceptibility to M. incognita and their agronomic performance. One group consisted of cultivars that were less susceptible to M. incognita and had better agronomic performance. Cultivars that were more susceptible to M. incognita and had poorer agronomic performance made up the other group. The Hiré cultivar was the least favourable to M. incognita development. Based on the current study, the Hiré cultivar may be a promising option for farmers in root-knot nematode-prone environments.

Esloveno. Ogorčice vozlanja korenin so glavni omejujoči dejavnik pri gojenju jedilnega osleza v Slonokoščeni obali. Uporaba odpornih sort izgleda kot najboljša strategija za uravnavanje teh ogorčic. Namen raziskave je bil določiti odziv poglavitnih sort jedilnega osleza na tega škodljivca v Slonokoščeni obali. Semena 20 sort jedilnega osleza (bamije) so bila posajena v lonce v rastlinjaku. Šitirinajst dni stare sejanke so bile inokulirane z juvenilnimi ogorčicani v 500 sekundnem stadiju, kaneje so bili določeni agronomski in patološki parametri. Sorta Basanti je imela največji indeks šišk (5,0/rastlino), največjo velikost končne populacije ogorčic (7938 osebkov/rastlino) in največji reproduktivni faktor (15,88/rastlino), sorta Hiré je imela najmanjši indeks šišk (3,0/rastlino), najmanjšo končno populacijo ogorčic (912 osebkov/rastlino) in najmanjši reproduktivni faktor (1,8/rastlino). Prepoznani sta bili dve skupini sort glede na njihovo občutljivost na ogorčico in agronomske lastnosti. Prva skupina je bila sestavljena iz sort, ki so bile na ogorčico manj občutljive in so imele boljše agronomske lastnosti. Druga skupina sort je bila na ogorčico bolj občutljiva in je imela slabše agronomske lastnosti. Sorta Hiré je bila za razvoj ogorčice M. incognita najmanj primerna in bi lahko bila obetajoča izbira za kmete v okoljih okuženih s to ogorčico.