References of "Visse-Mansiaux, Margot"
     in
Bookmark and Share    
Full Text
See detailRegression analysis of potato dormancy integrating genetic and environmental factors.
Visse-Mansiaux, Margot ULiege; Vanderschuren, Hervé ULiege; Soyeurt, Hélène ULiege et al

Conference (2017, July 14)

Potato dormancy is usually described as the period required by potato tubers to initiate sprouting after harvest. The dormancy parameter is key for the potato value chain because it defines the storage ... [more ▼]

Potato dormancy is usually described as the period required by potato tubers to initiate sprouting after harvest. The dormancy parameter is key for the potato value chain because it defines the storage period during which no anti-sprouting treatment is required. Dormancy is known to have a genetic component because the time from harvest to sprouting varies between potato varieties. A better characterization of dormancy helps optimizing storage by reducing the frequency of anti-sprouting applications. Reducing the anti-sprouting treatments not only helps lowering storage costs but it also provides an immediate benefit for human health and for the environment. The main objective of the present study is to develop a model predicting the dormancy length in function of the cultivar and the growing conditions of the considered year. So, 2 sources of informations were used: 1) average dormancy of cultivars provided by breeders (breeders dormancy) 2) average dormancy of cultivars obtained from field experiments (field dormancy). The field experiments were managed in Switzerland during 25 years in four different locations and for 721 varieties of potatoes. Field data were registered during the growing season such as weather data (e.g. temperature, rainfall etc.), soil data and crop management data. One month after harvest, the potatoes were stored at 8°C in wooden crates containing 7 kg of potato tubers. The dormancy was defined as the time between the harvest and the emergence of the first sprouts. The data (n=3’730) were analyzed as follow: (1) calculation of the field dormancy, which is the average dormancy length of the tested cultivars from the field data; (2) merging of field dormancy and breeders dormancy records (3) univariate regressions to study the link between the breeders and field dormancy records; (3) ANOVA to identify the parameters with the highest influence on the dormancy length; (4) creation of a model using these identified parameters in order to predict the sprouting date of potato stocks based on the field data; (5) validation of the model. Our results highlight the heterogeneity of the dormancy data provided by the potato breeders. Our results also stress the importance of climatic and field parameters to estimate the dormancy length of a given potato stock. We discuss the practical consequences for growers and potato storage companies. [less ▲]

Detailed reference viewed: 105 (7 ULiège)
Full Text
See detailRegression analysis of different sources of dormancy duration value for the potato varieties.
Visse-Mansiaux, Margot ULiege; Vanderschuren, Hervé ULiege; Soyeurt, Hélène ULiege et al

Poster (2017, February 08)

A dormancy value or duration defines the period potato tubers can be stored before initiating sprouting. Characterization of dormancy value provides useful information to implement strategies for short or ... [more ▼]

A dormancy value or duration defines the period potato tubers can be stored before initiating sprouting. Characterization of dormancy value provides useful information to implement strategies for short or long-term storage of potato varieties and can be instrumental to schedule treatment of potato tubers with sprouting inhibitors. The dormancy values of the varieties are provided by breeders. Those values can be retrieved from online databases. The objective of this study is to compare the dormancy values gathered from online databases with the dormancy values collected in Switzerland through field and storage experiments. This comparison is performed using linear regression analysis. So, 2 sources of information were used: 1) dormancy of cultivars provided by breeders (breeders dormancy) 2) dormancy of cultivars obtained from field experiments (field dormancy). The field experiments were managed in Switzerland during 25 years in four different locations and for 721 varieties of potatoes. Field data were registered during the growing season such as weather data (e.g. temperature, rainfall etc.), soil data and crop management data. One month after harvest, the potatoes were stored at 8°C in wooden crates containing 7 kg of potato tubers. The dormancy was defined as the time between the harvest and the emergence of the first sprouts. The results are the following: the dormancy of cultivars provides by online databases are incomplete and heterogeneous. This can be explained by the heterogeneity of the methods used by breeders to determine the dormancy values (e.g. the use of different control varieties and the use of different dormancy scales). The comparison of breeders and field dormancy through linear regression leads to the proposal of novel methodologies to assess and calculate the dormancy values of the potato varieties. Our results also stress the importance of climatic and field parameters to estimate the dormancy length of a given potato stock. [less ▲]

Detailed reference viewed: 73 (2 ULiège)
Full Text
See detailContrôle de la germination
Visse-Mansiaux, Margot ULiege; Schwaerzel, Ruedi; Dupuis, Brice

Article for general public (2017)

Fiche technique sur les produits anti-germinatifs rédigée à la demande de l'organisation Suisse Swisspatat, dans le but de communiquer sur les produits anti-germinatifs disponibles sur le marché Suisse ... [more ▼]

Fiche technique sur les produits anti-germinatifs rédigée à la demande de l'organisation Suisse Swisspatat, dans le but de communiquer sur les produits anti-germinatifs disponibles sur le marché Suisse ainsi que leurs méthodes d'applications et leurs coûts. Cette fiche est destinée à informer les agriculteurs et l'interprofession et est succeptible d'évouler si de nouveaux produits arrivent sur le marché Suisse. Deux versions ont été distribuées (français et allemand) et sont disponibles en ligne (Fr: http://www.kartoffel.ch/fileadmin/redaktion/pdf/Branche/Merkblaetter/F_controle_germination_sans_prod_no_debord_toprint_final.pdf et All: http://www.kartoffel.ch/uploads/tx_multishop/images/cmsfiles/595109a7a12dc.pdf) et en version papier (Fiches distribuées en Suisse par Swisspatat). [less ▲]

Detailed reference viewed: 56 (5 ULiège)
Full Text
See detailGérer l'après récolte
Visse-Mansiaux, Margot ULiege

Article for general public (2016)

Les chercheurs se mobilisent pour proposer des solutions de stockage de plus en plus innovantes et durables, capables de gérer de manière optimale les pommes de terre après la récolte. Le défi est de ... [more ▼]

Les chercheurs se mobilisent pour proposer des solutions de stockage de plus en plus innovantes et durables, capables de gérer de manière optimale les pommes de terre après la récolte. Le défi est de fournir aux consommateurs une marchandise de qualité irréprochable pendant toute l’année. La conférence de l’Association Européenne de Recherche sur la Pomme de terre, section “post-récolte” (“EAPR Post Harvest”) qui s’est déroulée du 29 juin au 1er juillet 2016 à Wageningen aux Pays-Bas, a permis de faire le point sur ces sujets en réunissant plus de 100 participants, chercheurs et industriels, Elle comptait 5 sessions consacrées à des sujets allant de la gestion de la qualité et de la physiologie au contrôle de la germination des pommes de terre après la récolte, en passant par la gestion du stockage. Les différents sujets evoqués lors de la conférence EAPR sont résumés dans cet article destiné à l'interprofession de la pomme de terre. [less ▲]

Detailed reference viewed: 31 (2 ULiège)
Full Text
See detailDescription of a novel method to calculate the dormancy duration of the potato varieties
Visse-Mansiaux, Margot ULiege; Vanderschuren, Hervé ULiege; Dupuis, Brice

Conference (2016, June 29)

The term of dormancy is often used to describe the storability of potato tubers. A dormancy value or duration defines the period potato tubers can be stored before initiating sprouting. Characterization ... [more ▼]

The term of dormancy is often used to describe the storability of potato tubers. A dormancy value or duration defines the period potato tubers can be stored before initiating sprouting. Characterization of dormancy value provides useful information to implement strategies for short or long-term storage of potato varieties and can be instrumental to schedule treatment of potato tubers with sprouting inhibitors. The dormancy values of the varieties are provided by breeders and research institutes. Those values can be retrieved from online databases. Comparison of the aforementioned online databases shows that the information is not available for all varieties and that this information can be variable and/or very different for some varieties. The variability can be explained by the heterogeneity of the methods used to determine the dormancy values (e.g. the use of different control varieties and the use of different dormancy scales). The aim of this study is to compare different statistical models based on linear regression analysis that could be used to calculate the dormancy value of a potato variety using field trials data and the corresponding post-harvest observations of tuber sprouting. To perform this comparison, we used dormancy value data collected for 210 potato varieties over 25 years in six locations in Switzerland (Swiss variety testing network datasets). This work provides a comparison of the performances of the different models that are tested and suggests novel methodologies to assess and calculate the dormancy values of the potato varieties. [less ▲]

Detailed reference viewed: 15 (1 ULiège)
Full Text
See detail"Description of a novel method to calculate the dormancy duration of the potato varieties"
Visse-Mansiaux, Margot ULiege; Vanderschuren, Hervé ULiege; Dupuis, Brice

Scientific conference (2016, June 09)

The term of dormancy is often used to describe the storability of potato tubers. A dormancy value or duration defines the period potato tubers can be stored before initiating sprouting. Characterization ... [more ▼]

The term of dormancy is often used to describe the storability of potato tubers. A dormancy value or duration defines the period potato tubers can be stored before initiating sprouting. Characterization of dormancy value provides useful information to implement strategies for short or long-term storage of potato varieties and can be instrumental to schedule treatment of potato tubers with sprouting inhibitors. The dormancy values of the varieties are provided by breeders and research institutes. Those values can be retrieved from online databases. Comparison of the aforementioned online databases shows that the information is not available for all varieties and that this information can be variable and/or very different for some varieties. The variability can be explained by the heterogeneity of the methods used to determine the dormancy values (e.g. the use of different control varieties and the use of different dormancy scales). The aim of this study is to compare different statistical models based on linear regression analysis that could be used to calculate the dormancy value of a potato variety using field trials data and the corresponding post-harvest observations of tuber sprouting. To perform this comparison, we used dormancy value data collected for 210 potato varieties over 25 years in six locations in Switzerland (Swiss variety testing network datasets). This work provides a comparison of the performances of the different models that are tested and suggests novel methodologies to assess and calculate the dormancy values of the potato varieties. [less ▲]

Detailed reference viewed: 27 (2 ULiège)
Full Text
See detailAlternatives to CIPC for the control of potato sprouting during storage
Visse-Mansiaux, Margot ULiege

Scientific conference (2016, March 14)

This poster describe the different parts of my PhD project and the ongoing research to find alternatives to CIPC for the control of potato sprouting during storage. Those research are conducted at the ... [more ▼]

This poster describe the different parts of my PhD project and the ongoing research to find alternatives to CIPC for the control of potato sprouting during storage. Those research are conducted at the agronomic research center, Agroscope, in Switzerland and at Gembloux Agro-Bio Tech University in Belgium. [less ▲]

Detailed reference viewed: 30 (2 ULiège)