Journal ArticleDOI
Relationship between infestation levels and yield loss caused by wheat midge, sitodiplosis mosellana (géhin) (diptera: cecidomyiidae), in spring wheat in saskatchewan
TLDR
Losses in yield of spring wheat due to infestations of Sitodiplosis mosellana (Gehin) were determined for 700 000 ha of arable land in northeast Saskatchewan, Canada in 1983 and losses in total gross revenue of about $30 million were estimated.Abstract:
Losses in yield of spring wheat due to infestations of Sitodiplosis mosellana (Gehin) were determined for 700 000 ha of arable land in northeast Saskatchewan, Canada in 1983. The proportion of kernels infested (y) was a power function of the number of wheat-midge larvae (x) (y = 35.3x0.725). One, 2, 3, and 4 larvae per kernel resulted in a level of infestation of 38, 58, 78, and 96%, respectively. There was no significant difference between infestation levels from fields sampled at the heading stage of crop growth and the estimates of infestation levels for these fields at harvest time. Yield of grain (y) was negatively exponential to an increase in level of infestation (x) (ln y = 5.7−0.017x). Infestations of 30, 60, and 90% reduced yields of spring wheat by 40, 65, and 79%, respectively. The average decrease in crop yield in the study area was about 30%, which resulted in estimated losses in total gross revenue of about $30 million.read more
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Book ChapterDOI
Breeding Wheat for Resistance to Insects
William A. Berzonsky,Hongjian Ding,Scott D. Haley,Marion O. Harris,Robert J. Lamb,R. I. H. McKenzie,Herbert W. Ohm,Fred L. Patterson,Frank B. Peairs,David R. Porter,Roger H. Ratcliffe,Thomas G. Shanower +11 more
Journal ArticleDOI
Application of molecular markers to wheat breeding in Canada
Harpinder Randhawa,Muhammad Asif,Curtis J. Pozniak,John M. Clarke,Robert J. Graf,S. L. Fox,D. Gavin Humphreys,Ron Knox,R. M. DePauw,Asheesh K. Singh,Richard D. Cuthbert,Pierre Hucl,Dean Spaner +12 more
TL;DR: Development of tightly linked diagnostic markers and high-throughput genotyping with SNP markers will result in more effective molecular wheat breeding in the near future and will open the door to genomic selection.
Journal ArticleDOI
Inducible Production of Phenolic Acids in Wheat and Antibiotic Resistance to Sitodiplosis mosellana
H. Ding,R. J. Lamb,N. Ames +2 more
TL;DR: Analysis by HPLC of seed extracts produced by alkaline hydrolysis revealed rapid changes in the levels of p-coumaric and ferulic acids during early seed development, which indicated the most resistant wheats had a higher constitutive level and a more rapid induction of ferulic acid than susceptible wheats.
Journal ArticleDOI
Distribution and seasonal abundance of Sitodiplosis mosellana (Diptera : Cecidomyiidae) in spring wheat
TL;DR: The wheat midge Sitodiplosis mosellana (Gehin) occurred in all wheat-growing areas of Manitoba during 1993-1997, with 95% of spring wheat fields having some seeds infested by larvae as discussed by the authors.
Journal ArticleDOI
The Chemical Ecology of Cecidomyiid Midges (Diptera: Cecidomyiidae)
TL;DR: Progress on identification of sex pheromones, chemicals involved in location of host plants, the neurophysiology of reception of volatile chemicals, and application of semiochemicals to management of pest species of cecidomyiid midges that has occurred during the last decade are reviewed.
References
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Journal ArticleDOI
The damage to wheat kernels caused by the wheat blossom midge (Sitodiplosis mosellana)
Byron S. Miller,P. Halton +1 more
TL;DR: In this article, the authors showed that increased α-amylase and protease activities were not the cause of poor quality of infested grain, which seem likely to result from the failure of protein to develop properly.
Journal ArticleDOI
Neue Untersuchungen über Eiablage, wirtschaftliche Schadensschwelle und Bekämpfung der Weizengallmücken (Dipt.; Cecidomyidae)1
Th. Basedow,F. Schütte +1 more
TL;DR: It is shown that the wheat plant has a relative high ability to compensate damage, and the testing of insecticides in the laboratory and in the field showed that Parathion was ineffective against the wheat blossom midges, that MalATHion was good, and Methoxychlor very good.