Genetic map construction and quantitative trait loci (QTL) mapping for nitrogen use efficiency and its relationship with productivity and quality of the biennial crop Belgian endive (Cichorium intybus L.)

A genetic study of the biennial crop Belgian endive (Cichorium intybus) was carried out to examine the effect of nitrogen nutrition during the vegetative phase in the control of the productivity and quality of the chicon (etiolated bud), a crop that grows during the second phase of development (forcing process). A population of 302 recombinant inbred lines (RIL) was obtained from the cross between contrasting lines "NS1" and "NR2". A genetic map was constructed and QTLs of several physiological and agronomical traits were mapped under two levels of nitrogen fertilization during the vegetative phase (N- and N+). The agronomical traits showed high broad sense heritability, whereas the physiological traits were characterized by low broad sense heritability. Nitrogen reserves mobilization during the forcing process was negatively correlated with nitrogen reserves content of the tuberized root and common QTLs were detected for these traits. The chicon productivity and quality were not correlated, but showed one common QTL. This study revealed that chicon productivity and quality were genetically associated with nitrogen reserves mobilization that exerts opposite effects on both traits. Chicon productivity was positively correlated with N reserves mobilization under N- and N+ and a common QTL with the same additive effects was detected for both traits. Chicon quality was negatively correlated with N reserves mobilization under N- and N+ and a common QTL with opposite additive effects was detected for both traits. These results lead to the conclusion that N reserves mobilization is a more effective trait than N reserves content in predicting chicon productivity and quality. Finally, this study revealed agronomical and physiological QTLs utilizable by breeders via marker-assisted selection to aid the optimization of chicon quality under adapted N fertilization

"Cost analysis in total hip arthroplasty: experience of a teaching medical center located in Paris"

International audienc

"Equity and planning: a critical analysis of a third generation regional healthcare management program"

International audienc

"Transitions - Habiter les Intermédiaires"

Il volume « Systèmes métropolitains du Grand Paris » presenta le sintesi degli interventi dei diversi membri del Consiglio Scentifico dell'AIGP (C. Portzamparc, C. Devillers et associées, Rogers Stirk Harbour, Secchi-Vigano, Perrault, MVRDV, LIN, STAR, Grumbach et associèes, SEURA- David Mangin et associèes, FGP+TER, F. Leclercq et M. Mimram, TVK_GULLER_ACADIE). L'articolo "Système Ouvert - Les Nouveaux Mondes du Grand Paris" è il contributo del team multidisciplinare TVK-GULLER-ACADIE e presenta una analisi critica delle strategie esistenti per il Grand Paris e una proposta per un metodo alternativo per pensare il divenire metropolitano dei territori Parigini

La robustesse d’une ville globale européenne - Vers un nouveau regard sur l’économie de la métropole

The report presents a summary of the research that the group TVK-GULLER-ACADIE, conducted on the subject of the new metropolitan economy and presents a critical analysis of the current thinking, in the framework of the demand to analyse the potential for a special commission for regional "new Economy" in Greater Paris. Putting a commission centred on the 'new economy' into perspective has led us to question the dominant approaches to metropolitan development metropolitan development and to propose a change of perspective. This methodological problematisation and scenario development work is based on on the experience and research carried out by the group's various protagonists of the consortium, and on a process of investigation and exchange which has led us to with the AIGP Leclercq - Lyon - Mimram team, as well as meeting and interviewing and interviewed a number of experts whom we would like to thank: Pierre Calame, Honorary Chairman of the Charles Léopold Mayer Foundation for the Progress of Humankind, Ludovic Albert and Gilles Crague, researchers and directors of studies at the LATTS, Isabelle Baraud-Serfaty, Director of IBS, Stephane Croxo and Magali Marton of DTZ, Marton of DTZ, Christophe Burckart Managing Director of REGUS, Edwin Buitelaar - Researcher Land- and Real estate development, Bert Uiterhoeve -Chairman Program team at Plabeka, Rudy Stroink - Developer and real estate expert, Faustine Le Bourg - Research Officer, Observatoire Régional de l'Immobilier (ORIE), Smaïn Aouadj - Director of the Observatoire Régional de l'Immobilier Observatoire Régional de l'Immobilier d'Entreprise (ORIE)