Identification and evaluation of root maggot (Delia spp.) (Diptera: Anthomyiidae) resistance within Brassicaceae

Dosdall, Lloyd M.; Good, Allen G.; Keddie, B. A.; Ekuere, U.; Stringam, G. R.

doi:10.1016/s0261-2194(00)00015-6

Cited by 30 publications

(27 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Plants of B. rapa were more susceptible to root maggot infestations than those of B. napus (experiment 1), a result consistent with Dosdall et al (1994Dosdall et al ( , 2000. Similarly, we found that root maggot damage to canola declined signiÞcantly with an increase in seeding rate for plants seeded in May (Fig.…”

Section: Discussionsupporting

confidence: 84%

Effects of Fall and Spring Seeding Date and Other Agronomic Factors on Infestations of Root Maggots, <I>Delia</I> spp. (Diptera: Anthomyiidae), in Canola

Dosdall

Clayton²,

Harker³

et al. 2006

View full text Add to dashboard Cite

Several agronomic benefits can result from fall seeding of canola (Brassica spp.), but extensive research data are lacking on the potential impact of this practice on infestations of root maggots (Delia spp.) (Diptera: Anthomyiidae), which are major pests of the crop in western Canada. Field experiments making up 13 location by year combinations were conducted in central Alberta, Canada, from 1998 to 2001 to determine the effect of fall versus spring seeding of canola on root maggot damage. Depending on the experiment, interactions with seeding rate, seed treatment, timing of weed removal, and canola species (cultivar) also were investigated. Root maggot damage declined with an increase in seeding rate for plots seeded in May but not in fall or April. Susceptibility to infestation was greater for plants of Brassica rapa L. than Brassica napus L., but seed treatment had no effect on damage by these pests. Combined analysis using data from all experiment by location by year combinations indicated that seeding date had no significant effect on root maggot damage. The extended emergence of Delia spp. adults, which spans the appearance of crop stages vulnerable to oviposition regardless of seeding date, prevented reduced root maggot attack. Covariance analysis demonstrated the importance of increasing seeding rate for reducing root maggot infestations, a practice that can be especially beneficial for May-seeded canola when growing conditions limit the ability of plants to compensate for root maggot damage. Results determined with the small plot studies described here should be validated in larger plots or on a commercial field scale, but both the combined and covariance analyses indicate that seeding canola in fall does not predispose plants to greater damage by larval root maggots than seeding in spring.

show abstract

Section: Discussionsupporting

confidence: 84%

Effects of Fall and Spring Seeding Date and Other Agronomic Factors on Infestations of Root Maggots, <I>Delia</I> spp. (Diptera: Anthomyiidae), in Canola

Dosdall

Clayton²,

Harker³

et al. 2006

View full text Add to dashboard Cite

show abstract

“…This canola species was selected because previous studies have shown that B. rapa is more susceptible to infestation by root maggots than is B. napus (Dosdall et al 1994;Dosdall et al 2000). For the drilled and top-dressed application methods, the treatments comprised applications of elemental sulfur prills at 0, 11, 28, 56, and 112 kg ha -1 , elemental sulfur powder at 0, 11, 28, 56, and 112 kg ha -1 , and granules of ammonium sulfate calculated to give sulfate additions of 0, 11, 28, 45, and 56 kg ha -1 .…”

Section: Experimental Design and Treatmentsmentioning

confidence: 99%

Do applications of sulfur or sulfate influence infestations of root maggots (Delia spp.) (Diptera: Anthomyiidae) in canola?

Dosdall¹,

Yang²,

Conway³

2002

Can. J. Plant Sci.

View full text Add to dashboard Cite

Dosdall, L. M., Yang, R.-C. and Conway, P. M. 2002. Do applications of sulfur or sulfate influence infestations of root maggots (Delia spp.) (Diptera: Anthomyiidae) in canola? Can. J. Plant Sci. 82: 599-610. While the importance of sulfur nutrition for the development of healthy stands of canola is well documented, the role of sulfur in the management of insect pest infestations has not previously been investigated in this crop. Field experiments were conducted at three sites in central Alberta in 1997 and 1998 to determine the influence of sulfur and sulfate applications on infestations of root maggots (Delia spp.) (Diptera: Anthomyiidae) in canola (Brassica rapa L.). Different formulations (granules, powder, prills, and sprays), application methods (either drilled in with the seed or top-dressed on the soil surface), and application rates were evaluated. To assess the degree of root maggot infestation, oviposition throughout the season and damage to taproots at the end of the season were monitored. Sulfur contents were analyzed from leaf samples collected mid-season and seed yields were measured from all treatment plots. Root maggot responses to the different sulfur treatments and application methods varied among years and sites, indicating that environmental factors have great importance in determining infestation levels by these pests, and the oxidation rate of elemental sulfur in soil. Sulfur formulation and application rate had significant effects on root maggot egg deposition and root damage for some sites and years, but even at high rates of application (112 kg ha -1 ) reductions in infestation levels were not substantial relative to the controls. While sulfur additions alone will not greatly reduce root maggot infestation levels in canola, growers should employ adequate sulfur nutrition for optimum crop health to enable plants to better compensate for damage by these pests. On a très bien étayé l'importance du soufre pour l'établissement de peuplements vigoureux de canola. Jusqu'à présent cependant, on ne s'était pas penché sur le rôle de cet élément dans la lutte contre les ravageurs de cette culture. Les auteurs ont effectué des essais sur le terrain à trois endroits, dans le centre de l'Alberta, en 1997 et 1998, en vue de déterminer les effets d'une application de soufre ou de sulfate sur la population de mouche des racines (Delia sp.) (Diptères : Anthomyidés) dans les champs de canola (Brassica rapa L.). Ils ont pour cela recouru à divers taux, préparations (granules, poudres, sphérules et pulvérisations) et méth-odes (application avec la semence ou à la surface du sol). Pour déterminer le degré d'infestation, les auteurs ont surveillé l'oviposition durant la saison de croissance et déterminé les dommages causés aux racines à la fin de cette dernière. Ils ont aussi déterminé la concentration de soufre dans les feuilles au milieu de la période végétative et établi le rendement grainier des parcelles traitées. La réaction du ravageur aux divers traitements et méthodes d'application varie avec l'année ...

show abstract

“…These three hybrids all have antixenotic resistance to feeding by root maggots (Delia spp.) (Dosdall et al 2000). This demonstrates that resistance against root maggots does not affect flea beetles.…”

Section: Discussionmentioning

confidence: 87%

Identification and evaluation of flea beetle (Phyllotreta cruciferae) resistance within Brassicaceae

Gavloski¹,

Ekuere²,

Keddie³

et al. 2000

Can. J. Plant Sci.

View full text Add to dashboard Cite

. 2000. Identification and evaluation of flea beetle (Phyllotreta cruciferae) resistance within Brassicaceae. Can. J. Plant Sci. 80: 881-887. All currently registered varieties of canola/oilseed rape, Brassica napus and B. rapa, are susceptible to attack by flea beetles, although to varying degrees. The development of resistant cultivars would be an environmentally acceptable means to reduce the damage caused by flea beetles. Seedlings from 10 species of Brassicaceae were evaluated for levels of antixenosis resistance to flea beetles in the laboratory, along with 308 Sinapis alba/B. napus hybrids. Thlaspi arvense and 11 cultivars of S. alba were resistant to feeding by flea beetles. In addition, 34 S. alba/B. napus hybrids were resistant to feeding by flea beetle in at least one test, although many of these failed to demonstrate resistance with repeated testing. One hybrid line was resistant to feeding by flea beetles each of the four times it was tested, while another was resistant in three out of four tests. These data indicate that resistance to flea beetles within the Brassicaceae is a genetic trait and can be transferred by interspecific hybridization. This information is the first step towards introgression of genetic sources of flea beetle resistance from resistant relatives into canola varieties.Key words: Flea beetles, Phyllotreta cruciferae, Brassica, resistance, antixenosis, introgression Gavloski, J. E., Ekuere, U., Keddie, A., Dosdall, L., Kott, L. et Good, A. G. 2000. Identification et évaluation de la résistance à l'altise (Phyllotreta cruciferae) chez les Brassicacées. Can. J. Plant Sci. 80: 881-887. Toutes les variétés actuellement homologuées de colza (et navettes) oléagineux de type canola, Brassica napus et B. rapa, sont, à plus ou moins fort degré, sensibles aux attaques de l'altise. La sélection de cultivars résistants serait un moyen écologiquement convivial de réduire les endommagements causés par cet insecte. Nous avons recherché en laboratoire des signes de résistance par antixénose à l'altise sur des jeunes plants appartenant à dix espèces de Brassicacées ainsi qu'à 308 hybrides Sinapis alba × B. napus. Thlaspi arvense (le tabouret des champs) et onze cultivars de S. alba manifestaient de la résistance aux déprédations de l'altise. Trente-quatre des hybrides moutarde × soja se montraient résistants dans un moins un essai, mais pour plusieurs d'entre eux cette résistance ne s'observait pas de façon régulière. Une lignée hybride était résistante dans quatre essais, tandis qu'une autre ne l'était que dans trois essais sur quatre. Ces observations montrent que la résistance à l'altise chez les Brassicacées est un caractère génétique transférable par hybridation interspécifique. Elles constitue, par ailleurs, la première étape vers l'introgression de source génétique de résistance à l'altise dans les variétés de colza canola à partir d'espèces apparentées de Brassicacées.

show abstract

Identification and evaluation of root maggot (Delia spp.) (Diptera: Anthomyiidae) resistance within Brassicaceae

Cited by 30 publications

References 13 publications

Effects of Fall and Spring Seeding Date and Other Agronomic Factors on Infestations of Root Maggots, <I>Delia</I> spp. (Diptera: Anthomyiidae), in Canola

Effects of Fall and Spring Seeding Date and Other Agronomic Factors on Infestations of Root Maggots, <I>Delia</I> spp. (Diptera: Anthomyiidae), in Canola

Do applications of sulfur or sulfate influence infestations of root maggots (Delia spp.) (Diptera: Anthomyiidae) in canola?

Identification and evaluation of flea beetle (Phyllotreta cruciferae) resistance within Brassicaceae

Contact Info

Product

Resources

About