Susceptibility of Brassica napus genotypes to infestation by cabbage stem weevil, Ceutorhynchus pallidactylus (Mrsh.)
The susceptibility of various genotypes of oilseed rape (Brassica napus L. var. oleifera), including resynthesized rapeseed (Brassica rapaxBrassica oleracea), to infestation by cabbage stem weevil, Ceutorhynchus pallidactylus, was investigated in laboratory experiments and in a semi-field trial. New laboratory screening techniques were developed for the quantification of adult feeding and oviposition within large numbers of genotypes. The amount of feeding and the number of progeny on three resynthesized rapeseed genotypes was proven to be significantly lower than on the standard cultivar 'Express'. In a semi-field experiment, each of seven resynthesized rapeseed lines, four OP-varieties of winter oilseed rape ('Express', 'Chuosenshu','Quinta', 'WvB9') and B. napus spp. napobrassica cv 'Devon Champion' was grown in single rows in replicated plots. Plots were protected from natural pest infestation by gauze cages and colonised with 30 males and 30 females of field collected C.pallidactylus. The level of infestation by C. pallidactylus larvae showed significant differences between the genotypes tested. No significant relationship was observed between the number of larvae per plant and the total leaf glucosinolate content.
Oilseed rape Brassica napus resynthesized rapeseed host-plant resistance screening feeding oviposition Ceutorhynchus pallidactylus
Michael Eickermann Friederike Trittermann Bernd Ulber
Department of Crop Sciences, Plant Pathology and Crop Protection Division, Entomology Section, University of Goettingen, Grisebachstrasse 6, D-37077 Goettingen, Germany
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
1529-1531
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）