  3. Contrôle des populations de mauvaises herbesJaunard, Delphine  ; Monty, Arnaud ; Mahy, Grégory et alin Bodson, Bernard; Destain, Jean-Pierre (Eds.) Livre Blanc - Céréales (2013, February 27) Detailed reference viewed: 6 (4 ULg) 10. Perspectives - Dynamique des populations de trois adventices des céréales en vue de la mise au point de méthodes intégrées de leur contrôleJaunard, Delphine ; ; Monty, Arnaud et alin Livre Blanc - Céréales - Gembloux (2012, February 29) Detailed reference viewed: 40 (5 ULg) Rapport de synthèse 2009-2011, Projet D31-1230: Dynamique des populations de trois adventices des céréales en vue de la mise au point de méthodes intégrées de leur contrôleJaunard, Delphine Report (2012) Detailed reference viewed: 12 (0 ULg)Dynamic of black-grass populations depending on the sowing time of winter wheat: présentationJaunard, Delphine Conference (2011, May 24) Detailed reference viewed: 13 (2 ULg) Dynamics of black-grass populations depending on the sowing time of winter wheat; Jaunard, Delphine ; Mahy, Grégory et alin Communications in Agricultural and Applied Biological Sciences (2011, May 24), 76(3), 485-490 Currently, economic, agronomic and environmental concerns, lead to reduce use of herbicides. This reduction can be help by cultural measures like delay of the sowing date. Four sowing dates of winter ... [more ▼] Currently, economic, agronomic and environmental concerns, lead to reduce use of herbicides. This reduction can be help by cultural measures like delay of the sowing date. Four sowing dates of winter wheat from 15th of October to 26th of November were tested. Dynamic of black-grass populations and their reproduction rate were assessed as well as dynamic of winter wheat for each date. Delay of sowing could significantly reduce reproduction rate of blac-grass. It was shwn that the emergence rate (pl/m²), but also number of ears per plant and number of seeds per ear of black-grass decreased significantly with the sowing date. This reproduction of seeds productioin already is from sixty per cent of a delay of two weeks sowing. [less ▲] Detailed reference viewed: 33 (7 ULg)Contribution à l'évaluation et la caractérisation de variétés de pommes de terre (Solanum sp.) des régions semi-arides des Andes boliviennesJaunard, Delphine Master's dissertation (2010) The Andean area is regarded as one of the greatest world centers of biodiversity and a major center of domestication, especially, the potato (Solanum sp.). Nowadays, this plant constitutes one of the most ... [more ▼] The Andean area is regarded as one of the greatest world centers of biodiversity and a major center of domestication, especially, the potato (Solanum sp.). Nowadays, this plant constitutes one of the most important productions of the economy and the Bolivian food. The potato represents one of the principal means of subsistence for the Bolivian farmers who cultivate many indigenous varieties of them. But the recent climate changes threaten this culture. Episodes of hail, freezing, rains and drought more intense and more frequent than before were reported by the farmers of two areas of Bolivian Altiplano (Llallagua and Cariquina Grande). These farmers were questioned within the framework of this work. They wish to take measures of adaptation to face up the climate changes. One of these measures is the identification and the improvement of tolerant varieties of potatoes to some abiotic factors and the drought in particular. This work, made in collaboration with PROINPA foundation (Fundación para Promoción e Investigación de Productos Andinos), has highlighted, among accessions of potatoes from the national bank from tubers and roots of Bolivia, accessions tolerant or sensitive to the drought. The method for the extraction of the DNA “FTA” (Whatman paper) was also tested with little success and was compared with the CTAB method usually used. Thereafter, the DNA obtained with these methods of extraction could be used in molecular tests in marker assisted selection with molecular markers associated with abiotic factors [less ▲] Detailed reference viewed: 38 (7 ULg) |
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