New Zealand Journal of Crop and Horticultural Science abstracts
Short communication
Interaction between root lesion nematode, Pratylenchus neglectus (Rensch
1924) Chitwood and Oteifa 1952, and root rotting fungi of wheat
A. TAHERI
G. J. HOLLAMBY
V. A. VANSTONE
Department of Plant Science
Waite Agricultural Research Institute
The University of Adelaide
Glen Osmond, South Australia 5064
S. M. NEATE
CSIRO Division of Soils
Glen Osmond
South Australia 5064
Abstract The most frequently isolated fungi from lesioned and
non-lesioned segments of wheat roots collected from fields infested with
Pratylenchus neglectus were Fusarium oxysporum (Fo), F.
acuminatum (Fa), F. equiseti (Fe), Microdochium bolleyi
(Mb), Gaeumannomyces graminis (Gg), Bipolaris sorokiniana
(Bs), Pythium irregulare (Pi), Pyrenochaeta terrestris (Pt),
Phoma sp., and Ulocladium atrum. In a glasshouse experiment, some
of the above fungi plus Rhizoctonia solani (Rs) were tested singly and
in selected combinations with and without P. neglectus. Number of
nematodes per plant and per gram dry root and severity of root lesioning showed
a positive interaction between some of these fungi and the nematode.
Inoculation with Rs, Mb, Bs, Gg + Fe, or Pi resulted in significantly higher
nematode populations per plant or per gram dry root. However, with Gg + Rs,
nematode numbers were reduced. Pt, Pi, Fo, or Gg + Fe in combination with the
nematode significantly increased severity of root lesioning.
Keywords root lesion nematodes; fungi; wheat
PDF file of entire paper: medium quality (383K); (scanned from paper original: notes about this process)
This year's abstracts |
Journal home page |
All abstracts |
Publishing home page
