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Jeroen Van Der Veken Tools for Hybrid Breeding in Industrial Chicory (Cichorium Intybus

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Jeroen Van Der Veken Tools for Hybrid Breeding in Industrial Chicory (Cichorium Intybus The Chancellor of Ghent University has the honour of inviting you to attend the public Abstract of the doctoral research defense of the doctoral dissertation of Industrial chicory (Cichorium intybus L.) roots are mainly grown for the extraction of the Jeroen Van der Veken prebiotic soluble dietary fiber inulin. To enhance yield and uniformity, F1 hybrid breeding is desired. For this there are two main prerequisites: homozygous lines and a controlled Title of the doctoral dissertation: pollination system. First, homozygous lines can be acquired by inbreeding through self- Tools for hybrid breeding in industrial chicory (Cichorium intybus L.) pollination. As industrial chicory is a biannual crop, this is a time consuming process. To circumvent the time consuming inbreeding process, doubled haploids can be used. A controlled pollination system is necessary to prevent self-pollination during seed The public defence will take place on 30 august 2019 at 17:00 in the Academieraadzaal (Hall production and ensure only hybrid seeds result from the cross of two different of the Academic Board) or “Vergaderzaal A0.1 Azalea", room A 0.030 at Campus Coupure, homozygous lines. Cytoplasmic male sterility (CMS) is preferred by breeders, this type of Coupure links 653, 9000 Ghent. male sterility is maternally inherited and can be maintained by pollination with isonuclear lines. In this thesis, we assessed different haploid inducing protocols. Only crosses with There will be a contiguous reception to which you are heartily invited. Cicerbita alpina resulted in haploid plants. We hypothesized a system of chromosome Please confirm your attendance before 23/08/2019 to: [email protected] elimination after intergeneric crosses with this related species. Here we speculate that chromosome elimination may act, at least in part, through a mechanism based on asymmetric CENH3 functionality and/or sub-genome specific centromere binding. Temperature stability of alloplasmic CMS chicory genotypes generated by pollinating a Dissertation supervisors wild chicory type with industrial chicory and subsequent multiple backcrossing with industrial chicory was tested. We found that the early floral bud stage was sensitive to Prof. dr. ir. Stefaan Werbrouck dr. ir. Tom Eeckhaut dr. ir. Johan Van Huylenbroeck high temperatures, resulting in fertile flowers 12 – 17 days after exposure. As a proof of Ghent University Flanders Research Institute for Flanders Research Institute for Faculty of Bioscience Engineering Agriculture, Fisheries and Food Agriculture, Fisheries and Food concept, a field trial of hybrids obtained by a cross between a partially inbred CMS seed (ILVO), Plant Science Unit (ILVO), Plant Science Unit parent and a DH pollen parent showed the potential of hybrid breeding. The inulin yield had increased by 15% compared to a reference synthetic cultivar. Brief Curriculum Vitae Board of examiners Prof. dr. ir. Godelieve Gheysen Prof. dr. ir. Geert Haesaert ir. Joost Baert Jeroen Van der Veken (°Wetteren, 20 December 1991) graduated Magna cum laude as Chair Secretary Flanders Research Institute for Master of Science in Biochemistry and Biotechnology in 2015 at KU Leuven. He started in Ghent University Ghent University Agriculture, Fisheries and Food (ILVO) Faculty of Bioscience Engineering Faculty of Bioscience Engineering Plant Science Unit 2015 as PhD student at ILVO in Melle in cooperation with Ghent University, Department of Plants and Crops. He worked from April 2015 until March 2019 on the project ‘Hybrid breeding in industrial chicory’ in cooperation with Chicoline, a division of Cosucra Groupe Prof. dr. ir. Dirk Reheul Prof. dr. Claire Périlleux dr. ir. Nico De Storme Warcoing S.A.. He tutored two thesis students, presented his results on various Ghent University Université de Liège KU Leuven Faculty of Bioscience Engineering Département des sciences de la vie Faculty of Bioscience Engineering international conferences and authored two peer-reviewed scientific publications. - Physiologie végétale .
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