Behavioral and Ovipositional Response of Diaeretiella rapae (Hymenoptera: Braconidae) to Rhopalosiphum padi and Brevicoryne brassicae in Winter Wheat and Winter Canola

2018 ◽  
Author(s):  
Mary E Ferguson ◽  
Kristopher L Giles ◽  
Norman C Elliott ◽  
Mark E Payton ◽  
Tom A Royer
Keyword(s):  
Winter Wheat ◽  
Rhopalosiphum Padi ◽  
Brevicoryne Brassicae ◽  
Diaeretiella Rapae ◽  
Winter Canola ◽  
Ovipositional Response

Seasonal abundance of Brevicoryne brassicae L. and Diaeretiella rapae (M'Intosh) under different cabbage growing systems

Ekologija ◽  
2008 ◽  
Vol 54 (4) ◽  
pp. 260-264 ◽  
Author(s):  
Laisvūnė Duchovskienė ◽  
Laimutis Raudonis
Keyword(s):  
Brevicoryne Brassicae ◽  
Diaeretiella Rapae ◽  
Seasonal Abundance

Continuous Winter Wheat Versus a Winter Canola-Winter Wheat Rotation

2012 ◽  
Vol 104 (2) ◽  
pp. 324-330 ◽  
Author(s):  
Joshua A. Bushong ◽  
Andrew P. Griffith ◽  
Thomas F. Peeper ◽  
Francis M. Epplin
Keyword(s):  
Winter Wheat ◽  
Winter Canola

scholarly journals Relación del número de individuos de Brevicoryne brassicae con la temperatura y con su parasitoide Diaretiella rapae en brócoli en el Bajío, México

2017 ◽  
Vol 7 (2) ◽  
pp. 463
Author(s):  
Manuel Darío Salas-Araiza ◽  
Marcos Antonio González-Márquez ◽  
Oscar Alejandro Martínez-Jaime
Keyword(s):  
Brevicoryne Brassicae ◽  
Diaeretiella Rapae

El manejo integrado de plagas se apoya en el conocimiento de la variación poblacional de un insecto plaga en función del clima y su relación con sus enemigos naturales, por lo tanto, los objetivos del presente estudio fueron estimar el número de individuos de Brevicoryne brassicae en función de la temperatura media, y conocer el grado de asociación que tiene este áfido con su porcentaje de parasitismo causado por Diaeretiella rapae, en el cultivo del brócoli, en la región de El Bajío, Guanajuato, México, durante el ciclo agrícola diciembre-2009 a marzo-2010. Se determinaron los coeficientes de correlación de Pearson para medir el grado de asociación entre el número de pulgones con la temperatura media (r= 0.74) y entre la cantidad de áfidos y su porcentaje de parasitismo (r= 0.64). Posteriormente, usando la técnica de regresión simple, se estimó la forma funcional que aproxima la relación entre la densidad poblacional de B. brassicae con la temperatura media, a través de un polinomio de grado cinco definido por: Y= - 81256.6 + 32478.9 T - 5150.6 T2 + 404.9 T3 -15.8T4 +0.2T5,dondeYfueelnúmerodepulgonesyT la temperatura media; el valor del estadístico F= 14.03 con una probabilidad p= 0.0005** del análisis de varianza de la regresión, y el coeficiente de determinación R2= 0.89, permitieron concluir que el modelo estimado fue adecuado.  Las poblaciones mayores de B. brassicae fueron el 13 de marzo, 2010 (4.4 pulgones planta-1) con una temperatura media de 17.4 °C; y el porcentaje más alto de parasitismo fue 35.7%, el 30 enero/2010; en general, osciló entre 22 y 26%.

Resistance to bird cherry-oat aphid (Rhopalosiphum padi L.) in winter wheat varieties

Euphytica ◽  
1993 ◽  
Vol 67 (1-2) ◽  
pp. 49-57 ◽  
Author(s):  
M�ria Papp ◽  
�kos Mesterh�zy
Keyword(s):  
Winter Wheat ◽  
Rhopalosiphum Padi ◽  
Wheat Varieties ◽  
Winter Wheat Varieties

Grassy Weeds and Corn as Potential Sources of Barley yellow dwarf virus Spread Into Winter Wheat

Plant Disease ◽  
2020 ◽  
pp. PDIS-05-20-1004
Author(s):  
Mahnaz Rashidi ◽  
Regina K. Cruzado ◽  
Pamela J. S. Hutchinson ◽  
Nilsa A. Bosque-Pérez ◽  
Juliet M. Marshall ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Barley Yellow Dwarf Virus ◽  
Rhopalosiphum Padi ◽  
Virus Titer ◽  
Yellow Dwarf ◽  
Dwarf Virus ◽  
Virus Spread ◽  
Weed Species ◽  
Barley Yellow Dwarf ◽  
Yellow Dwarf Virus

Barley yellow dwarf virus (BYDV) is an important vector-borne pathogen of cereals. Although many species of grasses are known to host BYDV, knowledge of their role in virus spread in regional agroecosystems remains limited. Between 2012 and 2016, Idaho winter wheat production was affected by BYDV. BYDV-PAV and the bird cherry-oat aphid (BCOA) (Rhopalosiphum padi L.) vector were commonly present in the affected areas. A series of greenhouse bioassays were performed to examine whether two types of corn (Zea mays L.), dent and sweet, and three commonly found grassy weeds, downy brome (Bromus tectorum L.), green foxtail (Setaria viridis L.), and foxtail barley (Hordeum jubatum L.), can be inoculated with BYDV (species BYDV-PAV) by BCOA and also act as sources of the virus in winter wheat. BCOA successfully transmitted BYDV-PAV to both corn types and all weed species. Virus titers differed between the weed species (P = 0.032) and between corn types (P = 0.001). In transmission bioassays, aphids were able to survive on these host plants during the 5-day acquisition access period and later successfully transmitted BYDV-PAV to winter wheat (var. SY Ovation). Transmission success was positively correlated with the virus titer of the source plant (P < 0.001) and influenced by weed species (P = 0.028) but not corn type. Overall, the results of our inoculation and transmission assays showed that the examined weed species and corn types can be inoculated with BYDV-PAV by BCOA and subsequently act as sources of infections in winter wheat.

scholarly journals Comparison of Field Population Growths of Three Cereal Aphid Species on Winter Wheat

2011 ◽  
Vol 39 (No. 2) ◽  
pp. 61-64 ◽  
Author(s):  
V. Jarošík ◽  
A. Honěk ◽  
A. Tichopád
Keyword(s):  
Winter Wheat ◽  
Rhopalosiphum Padi ◽  
Intrinsic Rate ◽  
Aphid Species ◽  
Population Increase ◽  
Intrinsic Rate Of Increase ◽  
Cereal Aphid ◽  
Metopolophium Dirhodum ◽  
Aphid Density ◽  
Rate Of Increase

Population growths of three aphid species colonising winter wheat stands, Metopolophium dirhodum, Rhopalosiphum padi and Sitobion avenae, were analysed by regression method. The calculations were based on counts in 268 winter wheat plots at 3 or 7 day intervals over 10 (leaves) or 6 (ears) years. The population dynamics of a particular species differed widely between years. Density independent exponential growth of the population was most common, but its rate differed significantly between species, and for S. avenae also between populations on leaves and ears, on which the populations grew fastest. Field estimates of the intrinsic rate of increase derived from the exponential growths ranged between 0.010&ndash;0.026 in M. dirhodum, 0.0071&ndash;0.011 in R. padi, and between 0.00078&ndash;0.0061 and 0.0015&ndash;0.13 in S. avenae on leaves and ears, respectively. In the populations with the most vigorous population growth, S. avenae on ears and M. dirhodum on leaves, the rate of population increase significantly decreased with increasing aphid density. &nbsp;

Introducing Winter Canola to the Winter Wheat-Fallow Region of the Pacific Northwest

2014 ◽  
Vol 13 (1) ◽  
pp. CM-2013-0023-RS ◽  
Author(s):  
Frank L. Young ◽  
Dale K. Whaley ◽  
William L. Pan ◽  
R. Dennis Roe ◽  
J. R. Alldredge
Keyword(s):  
Winter Wheat ◽  
Pacific Northwest ◽  
Winter Canola ◽  
The Pacific

scholarly journals Transgenic Winter Wheat Expressing the Sucrose Transporter HvSUT1 from Barley does not Affect Aphid Performance

Insects ◽  
2019 ◽  
Vol 10 (11) ◽  
pp. 388 ◽  
Author(s):  
Yang ◽  
Kloos ◽  
Mora-Ramírez ◽  
Romeis ◽  
Brunner ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Rhopalosiphum Padi ◽  
Aphid Species ◽  
Sucrose Transporter ◽  
Yield Potential ◽  
Cereal Aphids ◽  
Biotic Stresses ◽  
Transgenic Lines ◽  
Negative Impacts ◽  
Parental Cultivar

Winter wheat expressing the sucrose transporter HvSUT1 from barley (HOSUT) has an increased yield potential. Genetic engineering should improve cultivars without increasing susceptibility to biotic stresses or causing negative impacts on ecosystem services. We studied the effects of HOSUT wheat on cereal aphids that feed on the sugar-rich phloem sap. Three HOSUT winter wheat lines, their conventional parental cultivar Certo, and three conventional cultivars were used. Clip cage experiments in the greenhouse showed no differences in life-table parameters of Rhopalosiphum padi and Sitobion avenae (Hemiptera: Aphididae) on transgenic lines compared to Certo, except higher fecundity of S. avenae on one HOSUT line. Population development of both aphid species over three weeks on caged flowering tillers did not reveal differences between the HOSUT lines and Certo. When aphids were monitored in a Swiss field study over two years, no differences between HOSUT lines and Certo were observed. We conclude that HOSUT wheat did not have consistent effects on aphids compared to the parental cultivar and measured parameters were generally in the range observed for the conventional winter wheat cultivars. Thus, HOSUT wheat is unlikely to suffer from increased aphid damage.

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