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Review: Rotylenchulus Species: Identification, Distribution, Host Ranges, and Crop Plant Resistance
The ten known species of Rotylenchulus are sedentary root parasites that occur largely in tropical and subtropical latitudes, and there are clear anatomical differences in the trophic site induced by R. macrodoratus (uninucleate giant cell) compared to those induced byR.
Investigation-Research: Molecular and Morphological Analysis of Isolates of Pratylenchus coffeae and Closely Related Species
Morphological and genome variation between 32 nematode isolates identified originally as Pratylenchus coffeae, P. gutierrezi, P. loosi, and P. pseudocoffeae were characterized to estimate
Morphological and Molecular Characterization of Meloidogyne mayaguensis Isolates from Florida.
Preliminary results indicate the M. mayaguensis isolates from Florida can reproduce on tomato containing the Mi gene, and will be particularly useful in cases of M. mustaguensis populations mixed with M. arenaria, M. incognita, and M. javanica, which are the most economically important root-knot nematode species in Florida.
The results of host and field studies conducted in North and South America indicate that N. aberrans populations can be separated into bean, potato and sugarbeet groups, which have distinct host preferences and do not reproduce on graminaceous species or on leguminous species of the genera Medicago and Lupinus.
Life-cycle of Globodera rostochiensis on potato in Italy
The life-cycle of Globodera rostochiensis was studied outdoors in 1980-1981, at Catania and Bari in a subtropical climate and at Avezzano in a temperate climate. Second stage juveniles (J 2) were
A Classification of Tylenchulus semipenetrans Biotypes.
The presence of two biotypes of the citrus nematode (Tylenchulus semipenetrans) in Italian citrus and olive orchards has been confirmed by comparing host specificity. Host reaction to California
Pratylenchus hippeastri n. sp. (Nematoda: Pratylenchidae) from amaryllis in Florida with notes on P. scribneri and P. hexincisus.
A new root-lesion nematode Pratylenchus hippeastri n. sp. is described from amaryllis (Hippeastrum spp.) in Florida. The new species is characterised by a combination of the following morphological
Phylogenetic Relationships Among Selected Heteroderoidea Based on 18S and ITS Ribosomal DNA.
Combined sequences comprised of DNA from part of the conserved 18S ribosomal RNA gene (rDNA) plus the complete ITS rDNA segment were more similar to analysesbased on the ITS data alone than to analyses based on the 18S data alone.
Parasitic habits of Gracilacus peratica on olive feeder roots
Gracilacus peratica Raski was originally described from material collected on grape (Vitis vinifera L.) soil in Germany (Raski, 1962). This species, though also reported in Italy in association with
A Phylogeny of Belonolaimus Populations in Florida Inferred from DNA Sequences
The most striking aspect of the phylogenetic analysis is that none of the three nominal species (B. longicaudatus, B. euthychilus, and B. gracilis) are monophyletic, and two taxa appear to have discordant ITS and LSU sequences.