Affiliation:
1. Department of Entomology and Nematology, Gulf Coast Research and Education Center, University of Florida, Wimauma, FL 33598, USA
Abstract
Summary
Cucurbits are economically important crops and very susceptible to root-knot nematodes (Meloidogyne spp.; RKN) in Florida. A series of glasshouse and field trials were conducted to evaluate the susceptibility and host potential of different cucurbit crops to different RKN species. We tested the sensitivity of six cucurbit crops (squash, cucumber, cantaloupe, watermelon, smooth and angled luffa) that are commonly grown in Florida to some of the major RKN species, Meloidogyne enterolobii, M. floridensis, M. hapla, M. incognita and M. javanica under glasshouse conditions. In addition, cucumber, squash and zucchini were also tested in two field trials. Meloidogyne incognita was more damaging to all six tested cucurbit crops than M. javanica and M. floridensis in terms of gall index, eggs (root system)−1, eggs (g root)−1 and reproduction factor. In another experiment, the same cucurbit crops suffered greater damage and allowed higher reproduction of M. enterolobii as compared to M. javanica. Meloidogyne hapla caused little damage to all six cucurbit crops and had low reproduction rates, with highest root gall ratings and reproduction for cucumber and cantaloupe, and lowest for watermelon and squash. Meloidogyne enterolobii, M. floridensis, M. incognita and M. javanica caused higher root gall ratings on cucumber and watermelon than on squash, cantaloupe and luffa. This was also noted in the field trials, where cucumber had consistently higher gall indices than squash and zucchini. Root-knot nematode reproduction rates were the highest on squash and cucumber, especially with M. incognita and M. enterolobii. While all cucurbits were good hosts for all tested RKN species, significant differences were noted among cucurbit crops and RKN species.
Subject
Agronomy and Crop Science,Ecology, Evolution, Behavior and Systematics
Reference43 articles.
1. Molecular diagnostic key for identification of single juveniles of seven common and economically important species of root-knot nematode (Meloidogyne spp.);Adam, M.A.M.
2. Mitochondrial haplotype-based identification of root-knot nematodes (Meloidogyne spp.) on cut foliage crops in Florida;Baidoo, R.
3. Estimation of root-knot nematode infestation levels on roots using a rating chart;Bridge, J.
4. Identification and host preference of Meloidogyne mayaguensis, and other root-knot nematodes from Florida, and their susceptibility to Pasteuria penetrans;Brito, J.A.
5. Host status of selected cultivated plants to Meloidogyne mayaguensis in Florida;Brito, J.A.
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献