Plant-Parasitic Nematodes Associated with Breadfruit, Artocarpus altilis (Parkinson) Fosberg
| dc.contributor.author | Lau, Teri J.-W. | |
| dc.contributor.department | Tropical Plant Pathology | |
| dc.date.accessioned | 2019-05-28T20:42:38Z | |
| dc.date.available | 2019-05-28T20:42:38Z | |
| dc.date.issued | 2017-12 | |
| dc.description.abstract | A survey of plant-parasitic nematodes associated with breadfruit in Hawai‘i was conducted on 25 sites with breadfruit trees. Soil and breadfruit roots yielded seven genera of plant-parasitic nematodes (Helicotylenchus, Meloidogyne, Mesocriconema, Paratylenchus, Pratylenchus, Rotylenchulus, Tylenchorhynchus) and one Heteroderid. Morphometric and molecular techniques identified a root-lesion nematode found parasitizing breadfruit as Pratylenchus coffeae. Host ranges and pathogenicity of Meloidogyne javanica, Pratylenchus coffeae, and Rotylenchulus reniformis were tested on breadfruit cultivar ‘Ma‘afala’ in two experiments. In experiment 1, P. coffeae reproduced 17-fold, while M. javanica and R. reniformis did not replace the inoculum concentration. At termination, no visible symptoms were present on host plants, but a greater root weight of breadfruit inoculated with P. coffeae was measured. Experiment 2 showed similar trends despite higher greenhouse temperatures and pot-bound breadfruit trees. Reproductive factor results indicate breadfruit is a good host to P. coffeae and a poor host to M. javanica and R. reniformis. Key Words: Hawaii, Helicotylenchus dihystera, host range, identification, Kauaʻi, Ma‘afala, Maui, Meloidogyne javanica, lesion, Ma‘afala, molecular, morphometric, morphology, Oʻahu, Paratylenchus, pathogenicity test, Pratylenchus coffeae, Rotylenchulus reniformis, survey, ‘ulu. | |
| dc.identifier.uri | http://hdl.handle.net/10125/62814 | |
| dc.language | eng | |
| dc.publisher | University of Hawaii at Manoa | |
| dc.title | Plant-Parasitic Nematodes Associated with Breadfruit, Artocarpus altilis (Parkinson) Fosberg | |
| dc.type | Thesis | |
| dc.type.dcmi | Text | |
| dcterms.description | M.S. Thesis. University of Hawaiʻi at Mānoa 2017. |
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