| yield loss in susceptible cultivars of spring rapeseed due to fusarium wilt caused by fusarium oxysporum. | in 1999, reports of spring rapeseed plants (brassica napus l.) exhibiting wilt symptoms were received by agricultural extension personnel from farmers near fort vermillion and andrew, alberta, canada. fungal colonies recovered from affected plants after surface disinfection were identified as fusarium oxysporum by comparison of morphology on carnation leaf and potato dextrose agars with literature descriptions and reference cultures. root-dip inoculation of young rapeseed plants with spore suspe ... | 2007 | 18396801 |
| emergence and seasonal activity of the entomophagous rove beetle aleochara bilineata (coleoptera: staphylinidae) in canola in western canada. | aleochara bilineata gyllenhal (coleoptera: staphylinidae) is an important natural enemy of root maggots (delia spp.) (diptera: anthomyiidae), which are serious pests of brassicaceous crops in north america and europe. adults of a. bilineata feed on eggs and larvae of root maggots, and a. bilineata larvae parasitize delia spp. pupae. emergence and seasonal activity patterns of a. bilineata were investigated during 2003-2005 in canola (brassica rapa l. and brassica napus l.) in central alberta, ca ... | 2008 | 19161688 |
| ground beetle (coleoptera: carabidae) diversity, activity density, and community structure in a diversified agroecosystem. | diversity and abundance of ground beetles (coleoptera: carabidae) can be enhanced in vegetable and field intercropping systems, but the complexity of polycultures precludes the application of generalized assumptions of effects for novel intercropping combinations. in a field experiment conducted at lacombe and ellerslie, alberta, canada, in 2005 and 2006, we investigated the effects of intercropping canola (brassica napus l.) with wheat (triticum aestivum l.) on the diversity and community struc ... | 2012 | 22525061 |
| hybridization between transgenic brassica napus l. and its wild relatives: brassica rapa l., raphanus raphanistrum l., sinapis arvensis l., and erucastrum gallicum (willd.) o.e. schulz. | the frequency of gene flow from brassica napus l. (canola) to four wild relatives, brassica rapa l., raphanus raphanistrum l., sinapis arvensis l. and erucastrum gallicum (willd.) o.e. schulz, was assessed in greenhouse and/or field experiments, and actual rates measured in commercial fields in canada. various marker systems were used to detect hybrid individuals: herbicide resistance traits (hr), green fluorescent protein marker (gfp), species-specific amplified fragment length polymorphisms (a ... | 2003 | 12721639 |