Notes on taxonomy and nomenclature top of page ditylenchus dipsaci exhibits considerable variation with external factors, such as temperature, and it has several host races. Janssen dlocentrejorplant breeding and reproduction research cprodlo, p. Ditylenchus dipsaci ditydiphotos eppo global database. Its chromosome number has been reported from a number of hosts and geographical origins and it varies from n 6 to 30 sturhan and brzeski, 1991. The inducement of giant cells by meloidogyne javanica. The genus ditylenchus is an extensive one containing 81 species, and within the species ditylenchus dipsaci there are 30 races variations. Ditylenchus destructor, the two species rarely occur together in the same plant andrassy and farkas, 1988. Ditylenchus dipsaci wikispecies, free species directory. Overall, both sexes of the nematode range from 12 mm. In heavy infestation crop losses of 6080% are not unusual. Effect of ditylenchus dipsaci kuhn, 1857 tylenchida. Pm100228 eppo a1 and a2 lists of pests recommended for regulation as quarantine pests 2019.
Ditylenchus dipsaci has only been reported as a tobacco pest in holland, france, germany and switzerland. The distribution of plantfeeding and free living nematodes. Plant growth regulators in ditylenchus dipsaci ditylenchus triformis and host tissues. Ditylenchus definition of ditylenchus by merriamwebster. Download pdf download for windows now from softonic. All photos included on this page can only be used for educational purposes. Ditylenchus dipsaci is a plant pathogenic nematode that primarily infects onion and garlic. Ditylenchus destructor and ditylenchus dipsaci 2008. Pm 787 2 ditylenchus destructor and ditylenchus dipsaci. Furthermore, the organisms ecological niches in the soil and on the beet overlap. China, for example, will not allow cambodian rice to be imported unless the government can certify that the milled rice exported to china are free from the following quarantine pests of chinese concern. Parasitism of the nematode ditylenchus dipsaci in the main cultivated plants of the eastern highlands of colombia. A new distribution map is provided for ditylenchus dipsaci kuhn filipjev. For publication in journals, books or magazines, permission should be obtained from the original photographers with a copy to eppo.
It is of great economic significance worldwide and on the list of quarantine organisms of many countries. Potential of underutilized plants as green leaf manures towards the management of stem bulb nematode ditylenchus dipsaci and bulb mite. Many weeds and grasses are hosts for the nematode and may play an. Parasitismo del nematoda ditylenchus dipsaci kuhn 1857 filipjev 1934 en las principales plantas cultivadas en clima frio en colombia. Pdf molecular characterization of ditylenchus dipsaci on. Ditylenchus species ditylenchus dipsaci name synonyms anguillula dipsaci kuhn, 1857 ditylenchus galeopsidis teploukhova, 1970 ditylenchus sonchophila kirjanova, 1970 homonyms ditylenchus dipsaci kuhn, 1857 common names st. Download free pdf reader for windows now from softonic. Open, download, or view adobe acrobat files as pdf or html files in your browser. Although the proportion of infested narcissus bulbs was reduced when aldicarb temik 10g granules were applied at 6kg a. Symptoms of infection include stunted growth, discoloration of bulbs, and swollen stems. Treatment with ethoprop resulted in greatest reduction of nematodes early in the season.
Ditylenchus dipsaci extracted from infected plants was used for inoculation of seeds of test plants immediately before sowing in steam disinfected soil. Mar11 pathogen of the month march 2011 plant pathology. Pdf control of ditylenchus dipsaci in infected garlic seed. It is commonly known as the stem nematode, the stem and bulb eelworm, or onion bloat in the united kingdom. Subbotin2,3 1department of soil science, university of manitoba, winnipeg, mb r3t. This secernentea roundworm related article is a stub.
Download fulltext pdf control of ditylenchus dipsaci in infected garlic seed cloves by nonfumigant nematicides article pdf available in journal of nematology 181. Ditylenchus dipsaci ditydioverview eppo global database. Seedlings were examined two to three or five to six weeks after planting and classified as highly resistant, i. Hosted by the usgs core science analytics and synthesis. The relevance of races in ditylenchus dipsaci kuhn filipjev. Garlic bulbs heavily infected withditylenchus dipsaci were chemically treated to control the nematode. The nematode genus ditylenchus filipjev contains more than 80 species, only few are parasites of higher plants. The stem nematode ditylenchus dipsaci is of great economic importance worldwide as a parasite of agricultural crops and horticultural plants. Ditylenchus dipsaci is a species complex including diploid and polyploid individuals. Leptochloa chinensis, striga asiatica, apenlenchoides besseyi, ditylenchus angustus.
The races are not physically different in appearance but have different developmental requirements. Not surprisingly, several species have been described with morphological. Ditylenchus article about ditylenchus by the free dictionary. Ditylenchus dipsaci ditydidocuments eppo global database. Three nematicides were evaluated as seed treatments to control the alfalfa stem nematode ditylenchus dipsaci on seedling alfalfa. Ditylenchus dipsaci attacks the bulbs and cloves of onions, garlic, and ornamentals. Opie burst onions ditylenchus dipsaci filipjev bayon acta attacks on maize crops ditylenchus dipsaci filipjev raynal inapg affected stem of alfalfa the plant is becoming bushy ditylenchus dipsaci filipjev caubel g. Here we listed some of the best pdf readers for windows, which can help you to view your pdf files. Stem nematode ditylenchus dipsaci is one of the most devastating plant parasitic nematodes and is widely distributed mainly in temperate areas. Documents about ditylenchus dipsaci ditydi number title download. Hosts include onion, garlic, carrots, peas, potatoes, strawberry, apples and peaches. Later in the season, nematode populations increased with all treatments and crop.
Biology and control of the stem nematode, ditylenchus dipsaci. In those areas it causes a disease called stem break. Cih descriptions of plantparasitic nematodes, set 1, no. Apr 28, 2017 this is to inform you that, given the current covid19 outbreak in italy, considering the travel restrictions being implemented by many countries and to ensure the safety and health of all participants, the fifteenth session of the commission on phytosanitary measures cpm15 has been postponed. A nematicide seed treatment to control ditylenchus dipsaci on. Mar 31, 2016 the aim of this study was to investigate interactions between ditylenchus dipsaci and rhizoctonia solani. Among the more than 80 species currently recognized in the genus ditylenchus filipjev, 1936, only a few are parasites of higher plants, such as d. The following relationships have been collated from the published literature see references. Ditylenchus dipsaci is one of the most devastating plant parasitic nematodes on a wide range of crops. Farnham royal, uk, commonwealth agricultural bureaux. The problem is not reported from other tobacco producing regions of the world. Regulations require that propagative materials onions seeds and onion sets are certified to be free of d. Molecular diagnostics, taxonomy, and phylogeny of the stem.
Inra rennes larvae gathered on germinating seed of pigeon bean. Ditylenchus dipsaci species complex based on the sequences of the internal transcribed spacerrdna. Ditylenchus dipsaci an overview sciencedirect topics. Soilborne pathogens agents pathogenes telluriques diagnostics of stem and bulb nematodes, ditylenchus weischeri and d. The use of certified propagative material in uninfected soils is the best preventive and economical measure to avoid infestations of d. The internal transcribed spacer its of rdna from 23 popu. Major damage on garlic, onion, carrot, broad beans, lucerne, oats, strawberry, and various ornamentals. Page designed through the cooperative efforts of interagency itis teams. Read pdf files right in your browser the pdf download extension. Pdf potential of underutilized plants as green leaf manures. Treating the soil with aldicarb or phenamiphos was also effective. Anguinidae on onionyield in karaman province, turkey. Pdf effect of ditylenchus dipsaci kuhn, 1857 tylenchida. Some races affect a wide variety of host plants, including cultivated plants and weeds, whereas others are more specific.
Stem nematode ditylenchus dipsaci is a major pest of herbaceous and bulbous plants, including many ornamentals. In this video, we created simple steps how to how to download and install free pdf reader. Widely distributed in temperate regions of the world. Both pathogens are known to cause problems in the primary sugar beet production areas in germany. The efficacy of aldicarb in controlling stem nematode, ditylenchus dipsaci kuhn, filipjev in narcissus in the field was investigated. The plant parasitic nematodes important in japan and the related researches. Ditylenchus definition is a genus of small slender nematode worms family tylenchidae including serious plant parasites as the potato rot nematode and the bulb eelworm as well as a number of harmless soil forms and commensals. Control of ditylenchus dipsaci in garlic by bulb and soil. Ditylenchus destructor potato tuber nematode, potato rot nematode is recorded from all continents, mainly from temperate regions.
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