Responses of Ceutorhynchus obstrictus (Marsham) (Coleoptera: Curculionidae) to olfactory cues associated with novel genotypes developed by Sinapis alba L. × Brassica napus L.

2010 ◽  
Vol 4 (2) ◽  
pp. 95-106 ◽  
Author(s):  
James A. Tansey ◽  
Lloyd M. Dosdall ◽  
Andrew Keddie ◽  
Ron S. Fletcher ◽  
Laima S. Kott
Keyword(s):  
Brassica Napus ◽  
Sinapis Alba ◽  
Olfactory Cues ◽  
Brassica Napus L ◽  
Sinapis Alba L ◽  
Ceutorhynchus Obstrictus

Influence of seed size in canola, Brassica napus L. and mustard, Sinapis alba L., on seedling resistance against flea beetles, Phyllotreta cruciferae (Goeze)

1991 ◽  
Vol 71 (2) ◽  
pp. 397-404 ◽  
Author(s):  
R. P. Bodnaryk ◽  
R. J. Lamb
Keyword(s):  
Brassica Napus ◽  
Seed Size ◽  
Seedling Survival ◽  
Flea Beetle ◽  
Sinapis Alba ◽  
Brassica Napus L ◽  
Seedling Resistance ◽  
Phyllotreta Cruciferae ◽  
Flea Beetles ◽  
Sinapis Alba L

Seedlings of Brassica napus L. 'Westar' or Sinapis alba L. 'Ochre' grown from seeds of various size were offered to flea beetles, Phyllotreta cruciferae (Goeze) in feeding tests for damage assessment. The proportion of cotyledon area damaged in both species was highest for seedlings grown from small seeds in choice and no-choice feeding tests. The proportion of seedlings killed by flea beetle feeding was also highest in seedlings from small seeds, an effect that was especially pronounced at high beetle densities (10/seedling) where 100% of seedlings from small seeds of B. napus were killed compared to 28.3% of seedlings from big seeds. For S. alba, at 20 beetles/seedling, 45.4% of seedlings from small seeds were killed compared to only 9.1% of seedlings from big seeds. Seedlings grown from big seeds of S. alba tolerated low levels of damage caused by flea beetle feeding or by scissors. No evidence for tolerance was obtained for seedlings from small seeds of S. alba or for seedlings from big or small seeds of B. napus. "Big seeds" appears to be a desirable trait that enhances crucifer seedling resistance to flea beetle attack and results in increased seedling survival. Key words: Brassica napus 'Westar', Sinapis alba 'Ochre', Phyllotreta cruciferae, flea beetle, seed size, resistance

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.

Resistance of canola-quality cultivars of yellow mustard, Sinapis alba L., to the cabbage seedpod weevil, Ceutorhynchus obstrictus (Marsham)

2004 ◽  
Vol 84 (1) ◽  
pp. 397-399 ◽  
Author(s):  
J. P. McCaffrey ◽  
B. L. Harmon ◽  
J. Brown ◽  
J. B. Davis
Keyword(s):  
Key Words ◽  
Plant Resistance ◽  
Sinapis Alba ◽  
Ceutorhynchus Assimilis ◽  
Yellow Mustard ◽  
Sinapis Alba L ◽  
Ceutorhynchus Obstrictus ◽  
Cabbage Seedpod Weevil ◽  
Canola Quality ◽  
Resistance Traits

Oilseed Bassica is susceptible to attack by the cabbage seedpod weevil while commercial yellow mustard, Sinapis alba L., is resistant. The objective of this study was to determine if canola-quality S. alba would maintain its resistance traits. In laboratory choice and nochoice tests we found the number of eggs laid by the weevil to be low or non-existent in all S. alba genotypes. Key words: Ceutorhynchus obstrictus, Ceutorhynchus assimilis, Sinapis alba, plant resistance

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

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