Developmental Biology of the Cabbage Seedpod Weevil, Ceutorhynchus obstrictus (Coleoptera: Curculionidae), in Spring Canola, Brassica napus, in Western Canada

2004 ◽  
Vol 97 (3) ◽  
pp. 458-465 ◽  
Author(s):  
Lloyd M. Dosdall ◽  
Doug W. A. Moisey
Keyword(s):  
Developmental Biology ◽  
Brassica Napus ◽  
Western Canada ◽  
Ceutorhynchus Obstrictus ◽  
Spring Canola ◽  
Cabbage Seedpod Weevil

scholarly journals Larval phenologies and parasitoids of two seed-feeding weevils associated with hoary cress and shepherd's purse (Brassicaceae) in Europe

2011 ◽  
Vol 143 (4) ◽  
pp. 399-410 ◽  
Author(s):  
Franck J. Muller ◽  
Lloyd M. Dosdall ◽  
Peter G. Mason ◽  
Ulrich Kuhlmann
Keyword(s):  
Biological Control ◽  
Brassica Napus ◽  
North America ◽  
Host Specificity ◽  
Brassica Rapa ◽  
Ceutorhynchus Obstrictus ◽  
Hoary Cress ◽  
Cabbage Seedpod Weevil ◽  
Alien Pest ◽  
Host Associations

AbstractIn Europe, Ceutorhynchus turbatus Schultze and Ceutorhynchus typhae (Herbst) (Coleoptera: Curculionidae) feed on seeds from hoary cress and shepherd's purse (Cardaria draba (L.) Desv. and Capsella bursa-pastoris (L.) Medik.); both plants are invasive in North America. In North America, C. turbatus is a candidate for biological control of hoary cress, C. typhae is adventive, and both are sympatric with cabbage seedpod weevil (Ceutorhynchus obstrictus (Marsham)), an invasive alien pest of canola (Brassica napus L. and Brassica rapa L., Brassicaceae). We investigated host associations among C. turbatus, C. typhae, and their parasitoids in Europe. Of particular interest was host specificity of Trichomalus perfectus (Walker) and Mesopolobus morys (Walker) (Hymenoptera: Pteromalidae), candidates for biological control of C. obstrictus in North America. We found no evidence that T. perfectus attacks C. turbatus or C. typhae; however, M. morys was the most common parasitoid associated with C. turbatus.

Antixenosis and antibiosis resistance to Ceutorhynchus obstrictus in novel germplasm derived from Sinapis alba x Brassica napus

2010 ◽  
Vol 142 (3) ◽  
pp. 212-221 ◽  
Author(s):  
James A. Tansey ◽  
Lloyd M. Dosdall ◽  
Andrew Keddie ◽  
Ron S. Fletcher ◽  
Laima S. Kott
Keyword(s):  
Brassica Napus ◽  
Field Trials ◽  
Sinapis Alba ◽  
Chemical Analyses ◽  
Resistant Line ◽  
Thlaspi Arvense ◽  
Ceutorhynchus Obstrictus ◽  
Resistant Lines ◽  
Cabbage Seedpod Weevil ◽  
Antibiosis Resistance

AbstractIntrogression of cabbage seedpod weevil, Ceutorhynchus obstrictus (Marsham) (Coleoptera: Curculionidae), resistance from Sinapis alba L. to susceptible Brassica napus L. (Brassicaceae) has produced genetic lines resistant to the weevil in replicated field trials. In the current study, weevil feeding and oviposition on S. alba and on resistant novel lines developed by crossing S. alba × B. napus were less frequent than on susceptible germplasm. Development times were greater and biomass was less when larvae were reared on resistant lines or S. alba. Oocyte development was faster in post-diapause springtime adult female weevils caged on susceptible plants than in those on a resistant line, S. alba, or an early-season food host, Thlaspi arvense L (Brassicaceae). Our results suggest that antixenosis resistance and antibiosis resistance are expressed by resistant lines. These results and previous chemical analyses of these lines also suggest that resistance is potentially influenced by attractive and (or) feeding-stimulant effects of 2-phenylethyl glucosinolate and antifeedant or toxic effects of 1-methoxy-3-indolylmethyl glucosinolate.

Cabbage seedpod weevil resistance in canola (Brassica Napus L.) yellow mustard (Sinapis alba L.) and canola × yellow mustard hybrids

2008 ◽  
Vol 88 (1) ◽  
pp. 239-245 ◽  
Author(s):  
Daniel W. Ross ◽  
Jack Brown ◽  
Joseph P. McCaffrey ◽  
Bradley L. Harmon ◽  
Jim B. Davis
Keyword(s):  
Brassica Napus ◽  
Negative Relationship ◽  
Sinapis Alba ◽  
Egg Laying ◽  
Seed Meal ◽  
Glucosinolate Content ◽  
Yellow Mustard ◽  
Ceutorhynchus Obstrictus ◽  
Choice Tests ◽  
Cabbage Seedpod Weevil

Canola, yellow mustard and yellow mustard × canola hybrids were screened for resistance to Ceutorhynchus obstrictus (Marsham) in a series of greenhouse and laboratory choice tests. Tests were conducted using small and large cages designed to hold Brassica pods or whole plants, respectively, with ovipositing female C. obstrictus. Pods were examined for feeding punctures, eggs laid and exit holes that resulted from emerging larvae. All yellow mustard cultivars examined were highly resistant to C. obstrictus feeding and egg laying. In addition, hybrid lines were found with significantly reduced feeding punctures, oviposition, and exit holes compared with canola. A negative relationship was observed between total glucosinolate content of seed and C. obstrictus resistance; however, in both detached pod and whole plant choice tests, hybrids were identified with high seed glucosinolate content that were more susceptible than the most susceptible canola. The relatively poor association between total seed meal glucosinolate content and C. obstrictus resistance is highly important and plant breeders should be able to develop canola-quality oil and seed meal characteristics with improved C. obstrictus resistance using yellow mustard × canola hybrids. The effect of specific glucosinolate types on C. obstrictus resistance may be more complex than previously thought, and further research will be needed to better understand the relationship between specific glucosinolate types and resistance to C. obstrictus. Key words: Brassica napus, Sinapis alba, Ceutorhynchus obstrictus, cabbage seedpod weevil, insect resistance, glucosinolate

Biochemical markers for cabbage seedpod weevil (Ceutorhynchus obstrictus (Marsham)) resistance in canola (Brassica napus L.)

Euphytica ◽  
2009 ◽  
Vol 170 (3) ◽  
pp. 297-308 ◽  
Author(s):  
Eric J. Shaw ◽  
Ron S. Fletcher ◽  
Lloyd L. Dosdall ◽  
Laima S. Kott
Keyword(s):  
Brassica Napus ◽  
Biochemical Markers ◽  
Brassica Napus L ◽  
Ceutorhynchus Obstrictus ◽  
Cabbage Seedpod Weevil

scholarly journals Clubroot resistance derived from the European Brassica napus cv. ‘Tosca’ is not effective against virulent Plasmodiophora brassicae isolates from Alberta, Canada

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Rudolph Fredua-Agyeman ◽  
Sheau-Fang Hwang ◽  
Hui Zhang ◽  
Igor Falak ◽  
Xiuqiang Huang ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Plasmodiophora Brassicae ◽  
Snp Array ◽  
Genomic Region ◽  
Western Canada ◽  
Clubroot Resistance ◽  
Spring Canola ◽  
The Common ◽  
Dh Lines ◽  
Moderately Resistant

AbstractIn this study, clubroot resistance in the resynthesized European winter Brassica napus cv. ‘Tosca’ was introgressed into a Canadian spring canola line ‘11SR0099’, which was then crossed with the clubroot susceptible spring line ‘12DH0001’ to produce F1 seeds. The F1 plants were used to develop a doubled haploid (DH) mapping population. The parents and the DH lines were screened against ‘old’ pathotypes 2F, 3H, 5I, 6M and 8N of the clubroot pathogen, Plasmodiophora brassicae, as well as against the ‘new’ pathotypes 5X, 5L, 2B, 3A, 3D, 5G, 8E, 5C, 8J, 5K, 3O and 8P. Genotyping was conducted using a Brassica 15K SNP array. The clubroot screening showed that ‘Tosca, ‘11SR0099’ and the resistant DH lines were resistant to three (2F, 3H and 5I) of the five ‘old’ pathotypes and four (2B, 3O, 8E and 8P) of the 12 ‘new’ pathotypes, while being moderately resistant to the ‘old’ pathotype 8N and the ‘new’ pathotypes 3D and 5G. ‘Tosca’ was susceptible to isolates representing pathotype 3A (the most common among the ‘new’ pathotypes) as well as pathotypes 6M, 5X, 5L, 5K and 8J. Linkage analysis and QTL mapping identified a ca. 0.88–0.95 Mb genomic region on the A03 chromosome of ‘Tosca’ as conferring resistance to pathotypes 2F, 3H, 5I, 2B, 3D, 5G, 8E, 3O and 8P. The identified QTL genomic region housed the CRk, Crr3 and CRd gene(s). However, the susceptibility of ‘Tosca’ to most of the common virulent pathotypes makes it unattractive as a sole CR donor in the breeding of commercial canola varieties in western Canada.

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