Gary Puterka - Academia.edu (original) (raw)
Papers by Gary Puterka
Janick/Horticultural Reviews, Volume 31, 2004
Additional index words. Malus domestica, kaolin, ÔEmpireÕ, hue angle, reflective mulch red/far-re... more Additional index words. Malus domestica, kaolin, ÔEmpireÕ, hue angle, reflective mulch red/far-red ratio
Arthropod Management Tests, 2002
HortScience: a publication of the American Society for Horticultural Science
Insecticides - Pest Engineering, 2012
Journal of Economic Entomology, 2015
A key component of Russian wheat aphid, Diuraphis noxia (Kurdjumov), management has been through ... more A key component of Russian wheat aphid, Diuraphis noxia (Kurdjumov), management has been through planting resistant wheat cultivars. A new biotype, RWA2, appeared in 2003 which caused widespread damage to wheat cultivars containing the Dn4 gene. Biotypic diversity in Russian wheat aphid populations has not been addressed since 2005 when RWA2 dominated the biotype complex. Our objectives were to determine the biotypic diversity in the Central Great Plains and Colorado Plateau at regional (2010, 2011, 2013) and local (2012) levels and detect the presence of new Russian wheat aphid biotypes. Regional and within-field aphid collections were screened against Russian wheat aphidresistant wheat genotypes containing genes Dn3, Dn4, Dn6, Dn7, Dn9, CI2401; and resistant barley STARS 9301B. In 2010, all aphid collections from Texas were avirulent to the Dn4 resistance gene in wheat. Regional results revealed Dn4 avirulent RWA6 was widespread (55-84%) in populations infesting wheat in both regions. Biotypes RWA1, 2, and 3/7 were equally represented with percentages <20% each while RWA8 was rarely detected. Combining percentages of RWA1, 6, and 8 across regions to estimate avirulence to Dn4 gene revealed high percentages for both 2011 (64-80%) and 2013 (69-90%). In contrast, the biotype structure at the local level differed where biotype percentages varied up to !2-fold between fields. No new biotypes were detected; therefore, Dn7, CI2401, and STARS9301B remained resistant to all known Russian wheat aphid biotypes. This study documents a shift to Dn4 avirulent biotypes and serves as a valuable baseline for biotypic diversity in Russian wheat aphid populations prior to the deployment of new Russian wheat aphid-resistant wheat cultivars.
Plant Health Progress, 2003
... Gary J. Puterka and Mike Reinke, USDA-ARS, AFRS Kearneysville, WV; Donald Luvisi, Project Coo... more ... Gary J. Puterka and Mike Reinke, USDA-ARS, AFRS Kearneysville, WV; Donald Luvisi, Project Coordinator, Glassy-winged Sharpshooter Task Force, UC Cooperative ... move off treated or untreated trees over the 4-d period after they had found a suitable site on which to settle. ...
Southwestern Entomologist, 2012
Journal of the Kansas Entomological Society, 2007
Journal of the Kansas Entomological Society, 2011
Journal of Proteomics, 2012
Diuraphis noxia, Russian Wheat Aphid (RWA), biotypes are classified by their differential virulen... more Diuraphis noxia, Russian Wheat Aphid (RWA), biotypes are classified by their differential virulence to wheat varieties containing resistance genes. RWA salivary proteins, unlike those of most aphid species, cause foliar damage and physiological alterations in plants.
Journal of Proteomics, 2013
Greenbug (Schizaphis graminum Rondani) biotypes are classified by their differential virulence to... more Greenbug (Schizaphis graminum Rondani) biotypes are classified by their differential virulence to wheat, barley, and sorghum varieties possessing greenbug resistance genes.
Journal of Economic Entomology, 2013
Since 2003, four new biotypes of the Russian wheat aphid, Diuraphis noxia (Kurdjumov) (Homoptera:... more Since 2003, four new biotypes of the Russian wheat aphid, Diuraphis noxia (Kurdjumov) (Homoptera: Aphididae), RWA2ÐRWA5, have been discovered that have the ability to damage most of the wheat germplasm resistant to the original Russian wheat aphid population (RWA1). Barley germplasm lines with resistance to RWA1 have not yet been evaluated against the newest biotypes. Our study compared how biotypes RWA1ÐRWA5 affected the growth and leaf damage of RWA1resistant germplasm (STARS 9301B, STARS 9577B), moderately resistant germplasm (MR-015), and susceptible varieties (Schuyler, Harrington, and Morex) under greenhouse conditions. Russian wheat aphid population levels also were determined 14 d after plant infestation. STARS 9301B exhibited strong resistance by showing only small differences in leaf damage and growth parameters from the feeding by the biotypes. STARS 9577B showed greater differences in damage by the Russian wheat aphid biotypes than STARS 9301B, yet, the ratings were still within the resistant category (e.g., chlorosis rating 2.3Ð 4.9). Leaf chlorosis ratings for MR-015 ranged from 5.0 to 6.9 and fell within the moderately resistant to susceptible categories for all the biotypes. The greatest difference in leaf chlorosis occurred in Morex where RWA2 showed less virulence than the other biotypes. Feeding by the Russian wheat aphid biotypes produced only small differences in leaf rolling and plant growth within plant entries. Population levels of the Russian wheat aphid biotypes did not differ within barley entries (n ϭ 610 Ð971) at the termination of the study (14 d). From our research, we conclude that the new Russian wheat aphid biotypes pose no serious threat to the key sources of resistance in barley (STARS 9301B and 9577B).
Janick/Horticultural Reviews, Volume 31, 2004
Additional index words. Malus domestica, kaolin, ÔEmpireÕ, hue angle, reflective mulch red/far-re... more Additional index words. Malus domestica, kaolin, ÔEmpireÕ, hue angle, reflective mulch red/far-red ratio
Arthropod Management Tests, 2002
HortScience: a publication of the American Society for Horticultural Science
Insecticides - Pest Engineering, 2012
Journal of Economic Entomology, 2015
A key component of Russian wheat aphid, Diuraphis noxia (Kurdjumov), management has been through ... more A key component of Russian wheat aphid, Diuraphis noxia (Kurdjumov), management has been through planting resistant wheat cultivars. A new biotype, RWA2, appeared in 2003 which caused widespread damage to wheat cultivars containing the Dn4 gene. Biotypic diversity in Russian wheat aphid populations has not been addressed since 2005 when RWA2 dominated the biotype complex. Our objectives were to determine the biotypic diversity in the Central Great Plains and Colorado Plateau at regional (2010, 2011, 2013) and local (2012) levels and detect the presence of new Russian wheat aphid biotypes. Regional and within-field aphid collections were screened against Russian wheat aphidresistant wheat genotypes containing genes Dn3, Dn4, Dn6, Dn7, Dn9, CI2401; and resistant barley STARS 9301B. In 2010, all aphid collections from Texas were avirulent to the Dn4 resistance gene in wheat. Regional results revealed Dn4 avirulent RWA6 was widespread (55-84%) in populations infesting wheat in both regions. Biotypes RWA1, 2, and 3/7 were equally represented with percentages <20% each while RWA8 was rarely detected. Combining percentages of RWA1, 6, and 8 across regions to estimate avirulence to Dn4 gene revealed high percentages for both 2011 (64-80%) and 2013 (69-90%). In contrast, the biotype structure at the local level differed where biotype percentages varied up to !2-fold between fields. No new biotypes were detected; therefore, Dn7, CI2401, and STARS9301B remained resistant to all known Russian wheat aphid biotypes. This study documents a shift to Dn4 avirulent biotypes and serves as a valuable baseline for biotypic diversity in Russian wheat aphid populations prior to the deployment of new Russian wheat aphid-resistant wheat cultivars.
Plant Health Progress, 2003
... Gary J. Puterka and Mike Reinke, USDA-ARS, AFRS Kearneysville, WV; Donald Luvisi, Project Coo... more ... Gary J. Puterka and Mike Reinke, USDA-ARS, AFRS Kearneysville, WV; Donald Luvisi, Project Coordinator, Glassy-winged Sharpshooter Task Force, UC Cooperative ... move off treated or untreated trees over the 4-d period after they had found a suitable site on which to settle. ...
Southwestern Entomologist, 2012
Journal of the Kansas Entomological Society, 2007
Journal of the Kansas Entomological Society, 2011
Journal of Proteomics, 2012
Diuraphis noxia, Russian Wheat Aphid (RWA), biotypes are classified by their differential virulen... more Diuraphis noxia, Russian Wheat Aphid (RWA), biotypes are classified by their differential virulence to wheat varieties containing resistance genes. RWA salivary proteins, unlike those of most aphid species, cause foliar damage and physiological alterations in plants.
Journal of Proteomics, 2013
Greenbug (Schizaphis graminum Rondani) biotypes are classified by their differential virulence to... more Greenbug (Schizaphis graminum Rondani) biotypes are classified by their differential virulence to wheat, barley, and sorghum varieties possessing greenbug resistance genes.
Journal of Economic Entomology, 2013
Since 2003, four new biotypes of the Russian wheat aphid, Diuraphis noxia (Kurdjumov) (Homoptera:... more Since 2003, four new biotypes of the Russian wheat aphid, Diuraphis noxia (Kurdjumov) (Homoptera: Aphididae), RWA2ÐRWA5, have been discovered that have the ability to damage most of the wheat germplasm resistant to the original Russian wheat aphid population (RWA1). Barley germplasm lines with resistance to RWA1 have not yet been evaluated against the newest biotypes. Our study compared how biotypes RWA1ÐRWA5 affected the growth and leaf damage of RWA1resistant germplasm (STARS 9301B, STARS 9577B), moderately resistant germplasm (MR-015), and susceptible varieties (Schuyler, Harrington, and Morex) under greenhouse conditions. Russian wheat aphid population levels also were determined 14 d after plant infestation. STARS 9301B exhibited strong resistance by showing only small differences in leaf damage and growth parameters from the feeding by the biotypes. STARS 9577B showed greater differences in damage by the Russian wheat aphid biotypes than STARS 9301B, yet, the ratings were still within the resistant category (e.g., chlorosis rating 2.3Ð 4.9). Leaf chlorosis ratings for MR-015 ranged from 5.0 to 6.9 and fell within the moderately resistant to susceptible categories for all the biotypes. The greatest difference in leaf chlorosis occurred in Morex where RWA2 showed less virulence than the other biotypes. Feeding by the Russian wheat aphid biotypes produced only small differences in leaf rolling and plant growth within plant entries. Population levels of the Russian wheat aphid biotypes did not differ within barley entries (n ϭ 610 Ð971) at the termination of the study (14 d). From our research, we conclude that the new Russian wheat aphid biotypes pose no serious threat to the key sources of resistance in barley (STARS 9301B and 9577B).