Rapeseed

About: Rapeseed is a research topic. Over the lifetime, 2945 publications have been published within this topic receiving 51790 citations. The topic is also known as: Brassica napus & rape.

Rapeseed species and environmental concerns related to loss of seeds of genetically modified oilseed rape in Japan.

Abstract: Feral rapeseed in Japan consists of Brassica rapa, B. juncea and B. napus, mostly produced by escape from crops. Brassica rapa and B. juncea were introduced from abroad long ago as leaf and root vegetables and as an oil crop and breeders have developed various cultivars. Brassica napus was introduced in the late 1800s, mainly as an oil crop. Rapeseed production in Japan is low, and most demand is met by imports from Canada (94.4% of the 2009 trade volume). Recently, spontaneous B. napus, including genetically modified (GM) herbicide-resistant individuals, has been detected along Japanese roads, probably originating from seeds lost during transportation of imports. As GM oilseed production increases abroad, the probability of escape of GM oilseed rape in Japan will increase, raising environmental biosafety concerns related to the impact of feral rapeseed on heirloom brassicaceous crops. In this paper, we review the history of rapeseed introduction in Japan and future concerns.

Effects of virginiamycin on the performance of pigs fed barley diets supplemented with soybean meal or low-glucosinolate rapeseed meal

Abstract: Ninety-six pigs, fed ad libitum from 10 to 94 kg liveweight, were used to examine the effects of including virginiamycin, at 0 and 1.102 g/100 kg diet, in starter and grower diets containing a low-glucosinolate rapeseed meal (Brassica napus L. cv. Tower) or soybean meal. Virginiamycin supplementation significantly increased growth rates, by 4.6% pre 33 kg liveweight and 5.1% subsequently, but produced a nonsignificant (P > 0.05) improvement in feed: gain ratios (2.8 and 0.5%, respectively). Use of the antibiotic did not significantly affect carcass criteria. Using the oilseed meals at 7.5% in the starter period and 12.5% subsequently, replacement of soybean meal by rapeseed meal resulted in a decrease in growth rates (from 546 to 518 g/day, P 0.0...

Rapeseed protein isolate

Abstract: A substantially undenatured protein isolate is formed from certain legumes and oil seeds, typically rapeseed (canola), by extracting protein from the source material with water and then diluting the resulting protein solution with more water. The dilution forms a dispersion of protein aggregates which are settled from the dispersion.

Genetic mapping, cloning, and functional characterization of the BnaX.VTE4 gene encoding a γ-tocopherol methyltransferase from oilseed rape

Abstract: Rapeseed (Brassica napus L.) is one of the major oilseed crops and an important source for tocopherols known as vitamin E in human nutrition. Increasing the tocopherol content and altering the tocopherol composition is a major goal in rapeseed breeding. The genes encoding enzymes from the tocopherol pathway have been cloned from model species. However, only scant data about tocopherol genes from crop species have been available. We have cloned four sequences of a gene family from B. napus with homology to the Arabidopsis thalianaVTE4 gene. The sequences were amplified by PCR with primers derived from the A. thaliana gene. BAC-clones were isolated to analyze the genomic structure of the BnaX.VTE4-loci. In contrast to the A. thaliana gene all B. napus sequences have two additional introns. For functional analysis, the BnaA.VTE4.a1 sequence was transformed into A. thaliana. Seeds from transgenic offspring showed a 50-fold increase of the α-tocopherol fraction which is in accordance with the predicted function of the gene. A marker assay was established and the BnaA.VTE4.a1 sequence was mapped to the end of chromosome A02 of the Tapidor × Ningyou7 genetic map, where also two QTL for α-tocopherol content had been mapped. Thus, the BnaA.VTE4.a1 gene is a promising candidate for these QTL and can be used for marker assisted selection for α-tocopherol content in rapeseed.