Evaluation of Serbian commercial maize hybrid tolerance to feeding by larval western corn rootworm (diabrotica virgifera virgifera leconte) using me novel 'difference approach'
Abstract
Since the discovery of the pest in 1992, western corn rootworm (Diabrotica virgifera virgifera LeConte (WCR)) populations in Serbia have successfully been kept low with crop rotation. This has reduced the efficiency of screening maize for WCR resistance. A cooperative project between Iowa State University and the Maize Research Institute, Zemun Polje evaluated 13 Serbian commercial maize varieties in Ames, Iowa over a two-year period using the difference approach. Maize hybrids were planted on trap crops where high WCR populations were assumed. Hybrids were evaluated for WCR resistance using a randomized complete block design with four replications. Treatments were paired-rows arranged in split plots with one row in each pair treated with insecticide and the other row left untreated. WCR injury was evaluated using a rating of root size and root re-growth (1-6 scale), root injury (0-3 Node-Injury Scale), root mass, lodging, and yield. The results indicated significant differences among ...the Serbian hybrids in the presence of moderate-to-high levels of western corn rootworms. The relative benefit of insecticide treatments for maize hybrids was a useful tool in evaluating resistant germplasm. However, conducting analyses on relative differences between insecticide treated and untreated plots was not as effective at detecting differences as comparing the plots independently.
Keywords:
Maize / Diabrotica virgifera virgifera / Resistance/tolerance / Maize Research Institute Zemun PoljeSource:
Maydica, 2010, 55, 3-4, 179-185Publisher:
- Maydica-Ist Sper Cerealicoltur, Bergamo
Funding / projects:
- Agricultural Experiment Station - 6699
Collections
Institution/Community
MRIZPTY - JOUR AU - Kadlicko, S. R. AU - Tollefson, J. J. AU - Prasifka, J. R. AU - Bača, Franja AU - Stanković, Goran AU - Delić, Nenad PY - 2010 UR - http://rik.mrizp.rs/handle/123456789/349 AB - Since the discovery of the pest in 1992, western corn rootworm (Diabrotica virgifera virgifera LeConte (WCR)) populations in Serbia have successfully been kept low with crop rotation. This has reduced the efficiency of screening maize for WCR resistance. A cooperative project between Iowa State University and the Maize Research Institute, Zemun Polje evaluated 13 Serbian commercial maize varieties in Ames, Iowa over a two-year period using the difference approach. Maize hybrids were planted on trap crops where high WCR populations were assumed. Hybrids were evaluated for WCR resistance using a randomized complete block design with four replications. Treatments were paired-rows arranged in split plots with one row in each pair treated with insecticide and the other row left untreated. WCR injury was evaluated using a rating of root size and root re-growth (1-6 scale), root injury (0-3 Node-Injury Scale), root mass, lodging, and yield. The results indicated significant differences among the Serbian hybrids in the presence of moderate-to-high levels of western corn rootworms. The relative benefit of insecticide treatments for maize hybrids was a useful tool in evaluating resistant germplasm. However, conducting analyses on relative differences between insecticide treated and untreated plots was not as effective at detecting differences as comparing the plots independently. PB - Maydica-Ist Sper Cerealicoltur, Bergamo T2 - Maydica T1 - Evaluation of Serbian commercial maize hybrid tolerance to feeding by larval western corn rootworm (diabrotica virgifera virgifera leconte) using me novel 'difference approach' VL - 55 IS - 3-4 SP - 179 EP - 185 UR - conv_780 ER -
@article{ author = "Kadlicko, S. R. and Tollefson, J. J. and Prasifka, J. R. and Bača, Franja and Stanković, Goran and Delić, Nenad", year = "2010", abstract = "Since the discovery of the pest in 1992, western corn rootworm (Diabrotica virgifera virgifera LeConte (WCR)) populations in Serbia have successfully been kept low with crop rotation. This has reduced the efficiency of screening maize for WCR resistance. A cooperative project between Iowa State University and the Maize Research Institute, Zemun Polje evaluated 13 Serbian commercial maize varieties in Ames, Iowa over a two-year period using the difference approach. Maize hybrids were planted on trap crops where high WCR populations were assumed. Hybrids were evaluated for WCR resistance using a randomized complete block design with four replications. Treatments were paired-rows arranged in split plots with one row in each pair treated with insecticide and the other row left untreated. WCR injury was evaluated using a rating of root size and root re-growth (1-6 scale), root injury (0-3 Node-Injury Scale), root mass, lodging, and yield. The results indicated significant differences among the Serbian hybrids in the presence of moderate-to-high levels of western corn rootworms. The relative benefit of insecticide treatments for maize hybrids was a useful tool in evaluating resistant germplasm. However, conducting analyses on relative differences between insecticide treated and untreated plots was not as effective at detecting differences as comparing the plots independently.", publisher = "Maydica-Ist Sper Cerealicoltur, Bergamo", journal = "Maydica", title = "Evaluation of Serbian commercial maize hybrid tolerance to feeding by larval western corn rootworm (diabrotica virgifera virgifera leconte) using me novel 'difference approach'", volume = "55", number = "3-4", pages = "179-185", url = "conv_780" }
Kadlicko, S. R., Tollefson, J. J., Prasifka, J. R., Bača, F., Stanković, G.,& Delić, N.. (2010). Evaluation of Serbian commercial maize hybrid tolerance to feeding by larval western corn rootworm (diabrotica virgifera virgifera leconte) using me novel 'difference approach'. in Maydica Maydica-Ist Sper Cerealicoltur, Bergamo., 55(3-4), 179-185. conv_780
Kadlicko SR, Tollefson JJ, Prasifka JR, Bača F, Stanković G, Delić N. Evaluation of Serbian commercial maize hybrid tolerance to feeding by larval western corn rootworm (diabrotica virgifera virgifera leconte) using me novel 'difference approach'. in Maydica. 2010;55(3-4):179-185. conv_780 .
Kadlicko, S. R., Tollefson, J. J., Prasifka, J. R., Bača, Franja, Stanković, Goran, Delić, Nenad, "Evaluation of Serbian commercial maize hybrid tolerance to feeding by larval western corn rootworm (diabrotica virgifera virgifera leconte) using me novel 'difference approach'" in Maydica, 55, no. 3-4 (2010):179-185, conv_780 .