Search results for "colza"

Genesys : a model of the influence of cropping system on gene escape from herbicide tolerant rapeseed crops to rape volunteers I. Temporal evolution …

2001

International audience

Effect on a gap on gene flow between otherwise adjacent transgenic Brassica napus crops

2003

International audience

Genome discrimination in progeny of interspecific hybrids between Brassica napus and Raphanus raphanistrum

2003

International audience

Les émissions de protoxyde d'azote (N2O) sous culture de colza

1998

GeneSys-Colza : un modèle des effets à moyen et à long terme des systèmes de culture sur les flux de gènes entre champs de colza et repousses dans un…

2000

National audience

Agro-environmental impact of the cultivation of herbicide tolerant genetically modified rapeseed varieties

2001

Effect of incorporation of Brassica napus L. residues in soils on mycorrhizal fungus colonisation of roots and phosphorus uptake by maize (Zea mays L…

2007

International audience; Plants in the Brassicaceae family are known to contain thioglucoside compounds that produce isothiocyanates when tissues are disrupted. These chemicals have a negative effect on soil-borne fungal pathogens, and possibly on vesicular-arbuscular mycorrhizal (AM) fungi. We investigated the effect of incorporation of Brassica napus L. residues in a soil on mycorrhizal colonisation of roots, P uptake and growth of following maize (Zea mays L.) crop. A pot experiment was carried out in a glasshouse with pre-inoculation with Glomus intraradices (+I and -I), incorporation of B. napus L. residues (+R and -R) and mineral P fertilization (+P and -P) as studied factors. The soil…

Contamination of rapeseed harvest by volunteers of other varieties : a study of intergenotypic competition

2004

Rapeseed volunteers in rapeseed crops can cause contamination in harvest through pollen and seeds. The aim of the study was to predict pollen and seed production by volunteers in winter rapeseed crops according to the genotypes of the crop and the volunteers. Firstly an experimental analysis of intraspecific competition was carried out in 2000 and 2001 on two and six genotypes, respectively. The main competition period begins with vegetation onset and affects pollen and seed production of the volunteers. Relations between density, height, yield and number of flowers were developed based on results from experiments and literature. Knowing the densities and heights of volunteers and crop on t…

Evaluation and use of a spatio-temporal model of cropping system effects on gene escape from transgenic oilseed rape varieties. Example of the GENESY…

2005

International audience

Contribution des pollinisateurs dans la production de colza et de tournesol en zone atelier « Plaine et Val de Sèvre »

2018

Insect pollination is essential for over 70% of crops around the world. However, the contribution of pollinators to crop production and the insects involved in crop pollination have rarely been studied. Moreover, assessments of pollinator contributions have mostly been conducted on a small scale or under simplified conditions, which do not represent the real contributions at the field scale and do not take into account possible interactions between pollinators and farming practices. The aim of this study is to quantify directly under field conditions, the contribution of pollinators in two crops frequently cultivated in Europe: oilseed rape and sunflower. Estimations are realized both at th…