Abstract                 Volume:7  Issue-10  Year-2020          Original Research Articles

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Response of three tossa jute (Corchorus olitorius L.) cultivars produced in Benin to salinity stress at germination and young plant stages
Belvida Loko1, Koffi David Hambada Montcho2, Armel Clément Goudjo Mensah3, Mahougnon Baudouin Geoffroy Gouveitcha1, Agapit Wouyou1, Julien Koffi Kpinkoun1, Françoise Assogba Komlan3,  Christophe Bernard Gandonou1*
1Unité de Recherche sur l’Adaptation des Plantes aux Stress Abiotiques, les Métabolites Secondaires et l’Amélioration des Productions Végétales, Laboratoire de Physiologie Végétale et d’Etude des Stress Environnementaux,
Faculté des Sciences et Techniques (FAST/UAC), 01BP526, Tri Postal, Cotonou, République du Bénin
2Ecole de Gestion et de Production Végétale et Semencière, Université Nationale d’Agriculture, République du Bénin
3Centre de Recherches Agricoles Plantes Pérennes (CRA-PP), Pobè, Institut National des Recherches Agricoles du Bénin (INRAB), Abomey-Calavi, République du Bénin
*Corresponding author

The response of three tossa jute cultivars Ordinaire, 5-Doigts and Acc : Sud 2 to salt stress was evaluated at germination and young plant stages. Five NaCl concentrations: 0; 30; 60; 90 and 120 mM NaCl were used. Seeds were submitted to NaCl in petri dishes and germination was checked every day during thirty days in a completely randomized design with four replicates. Four-week old plants were submitted in pots to the same five NaCl concentrations by irrigation every two days for two weeks in screen house. NaCl reduced seed germination rate in all cultivars from day 2 to day 30 and the germination index. At the end of the 30 days, salt stress reduced the final germination percentages with a significant difference among cultivars: cultivar 5-doigts was the least affected than the two other cultivars. Salt effect caused a reduction of young plant growth whatever the growth parameter considered with a significant difference among cultivars. The growth of cultivar Acc:Sud 2 was more affected by salt stress with the lowest salt tolerance index whereas that of cultivar Ordinaire was the least affected with the highest salt tolerance index. Thus, cultivar 5-Doigts appeared as the most resistant to salt stress at germination stage among the three cultivars; whereas cultivar Ordinaire followed by 5-Doigts was the most salt resistant at young plant stage.

Keywords: Germination Leafy vegetable Plant growth Salt-resistance Tossa jute
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How to cite this article:

Loko, B., Hambada Montcho, K. D., Goudjo Mensah, A. C., Gouveitcha, M. B. G., Wouyou, A., Kpinkoun, J. K., Assogba Komlan, F., Gandonou, C. B., 2020. Response of three tossa jute (Corchorus olitorius L.) cultivars produced in Benin to salinity stress at germination and young plant stages.Int.J.Curr.Res.Biosci.Plantbiol. 7(10): 8-21. doi: https://doi.org/10.20546/ijcrbp.2020.710.002
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