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Master Thesis

Adaptation to climate change of blackcurrant variety "Noir de Bourgogne" through plant breeding and pollination optimization

Abstract : Blackcurrant crop, especially Noir de Bourgogne variety, is emblematic of Burgundy, with the well-known liquor “Crème de cassis”. Face to the sector’s difficulties to maintain a crop yield, a European project was built in association with scientific and technical partners. Two research topics of this project were developed here. The first topic consisted in looking for traits for the plant breeding program of Noir de Bourgogne variety. The aim was to adapt the Noir de Bourgogne to climate change and increasing pest pressure. The first topic comprised several tests: phenological observations, flowering and fruit initiation follow-ups, measurements of anther stigma distance and the development of a resistance test to white peach scale (WPS) Pseudaulacaspis pentagona on cuttings. The second topic based on the restoration of the blackcurrant pollination service. It focused on the installation of bumblebee and osmia hives in blackcurrant plots in order to measure the effectiveness of pollination. At the end of the internship, a link between anther stigma distance and fruit initiation rate was made, varieties were identified for their precocity or lateness. The main obstacles to the development of the resistance test have been identified, and the first infestations of WPS according to the susceptibility of the cutting variety seem to have worked. The addition of hives of certain pollinators was significant compared to "natural" pollination.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-03436080
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Submitted on : Friday, November 19, 2021 - 10:23:51 AM
Last modification on : Tuesday, November 23, 2021 - 3:43:34 AM

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Laura Grégoire. Adaptation to climate change of blackcurrant variety "Noir de Bourgogne" through plant breeding and pollination optimization. Life Sciences [q-bio]. 2021. ⟨dumas-03436080⟩

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