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Title: Effect of maerua angolensis and tabernaemontana elegans leaf meal extracts on meloidogyne incognita second-stage juvenile hatch and viability.
Authors: Dube, Zakheleni Palane.
School of Biology and Environmental Sciences
Keywords: Medicinal plants.;Phytonematicides.;Root-knot nematode.;Salicylic acid.
Issue Date: 2021
Abstract: The study examines the nematicidal effect of five leaf-meal extracts of Maerua angolensis and Tabernaemontana elegans on hatching and viability of second-stage juveniles (J2) of Meloidogyne incognita in in vitro assays. At all exposure times, J2-hatch inhibition and mortality caused by all plant extracts was significantly higher compared with the pluronic gel + deionised H2O treatment. Percentage J2- hatch inhibition and mortality increased with increasing exposure time for all extracts of both plants. After 21-days exposure, the partitioned-deionised H2O extracts of M. angolensis and T. elegans caused the highest J2 hatch inhibition (65.5 and 62.7%, respectively). After 72 h exposure, the partitioned-DCM and MeOH/DCM extracts of M. angolensis and the partitioned-deionised H2O extract of T. elegans had caused the highest J2 mortality (49.7, 48.1 and 48.3%, respectively). The results suggest that the compound of T. elegans causing J2 mortality may be either different in type or concentration to those in M. angolensis.
Description: Please note that only UMP researchers are shown in the metadata. To access the co-authors, please view the full text.
DOI: 10.24411/0869-6918-2021-10001
Appears in Collections:Journal articles

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