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Effect of plant and microbial chitinases on the eggs and juveniles of Meloidogyne hapla Chitwood (Nematoda: Tylenchida)
It is suggested that exogenous chitinases cause premature hatch of nematode eggs and could be used as an aid in the control of nem atodes. Expand
Genetic mapping of a root-knot nematode resistance locus in Trifolium
Genotypes exhibiting either complete resistance or susceptibility to infection by the clover root-knot nematode, Meloidogyne trifoliophila, were identified and segregation analysis indicated the resistance phenotype may be conferred by a single dominant allele at a locus subject to segregation distortion. Expand
Initial establishment of the irish strain of Microctonus aethiopoides in New Zealand
Four experimental releases of the parthenogenetic strain of Microctonus aethiopoides from Ireland were made in early 2006 in the Waikato, Manawatu (two sites) and Hawke’s Bay. By early winter,Expand
Host-Parasite Relationships of Meloidogyne trifoliophila Isolates from New Zealand.
Culture and identification of root-knot nematode populations from sites in the North Island of New Zealand showed that M. trifoliophila is more widespread and abundant than M. hapla, and differential resistant and susceptible galling responses among half-sib families of white clover from a breeding program indicated that all M.trifoliophile populations tested were of the same pathotype. Expand
Resistance Reactions to Meloidogyne trifoliophila in Trifolium repens and T. semipilosum.
The predominant root-knot nematode in New Zealand pastures is Meloidogyne trifoliophila, and a recurrent selection program in Trifolium repens has developed resistance to this species. No data areExpand
A microsporidian pathogen of the poroporo stem borer, Sceliodes cordalis (Dbld) (Lepidoptera: Pyralidae): I. Description and identification
Abstract A microsporidian pathogen of the poroporo stem borer, Sceliodes cordalis , is described in terms of its developmental cycle, morphology, and host specificity. The characteristics of theExpand
A microsporidian pathogen of the poroporo stem borer, Sceliodes cordalis (Dbld) (Lepidoptera: Pyralidae): Effects on adult reproductive success
In laboratory reared, infected females were smaller, had a lower longevity, a reduced spore load, and were more fecund (eggs per milligram adult weight) than infected females from a field population. Expand
A microsporidian pathogen of the poroporo stem borer, Sceliodes cordalis (Dbld) (lepidoptera: Pyralidae): Mortality and infectivity
A survey of the distribution of NSC in S. cordalis populations showed that NSC occurred at a high frequency in six out of seven sites and in a more detailed study at one site it was found that infection levels were high throughout the season. Expand
Development of the nematodes Meloidogyne hapla Chitwood and Heterodera trifolii Goffart in white clover.
The development of Meloidogyne hapla and Heterodera trifolii was monitored and related to heat accumulation and plant size declined in a sigmoid curve pattern for both species and curves were fitted to the relative means. Expand
Transcription of Biotic Stress Associated Genes in White Clover (Trifolium repens L.) Differs in Response to Cyst and Root-Knot Nematode Infection
The transcription of four members of the Kunitz proteinase inhibitor (KPI) gene family of white clover was investigated at both local infection and systemic sites inwhite clover in response to infection with the clover root knot nematode (CRKN) Meloidogyne trifoliophila and theClover cyst nematodes (CCN) Heterodera trifolii. Expand