Response of three tossa jute (Corchorus olitorius L.) cultivars produced in Benin to salinity stress at germination and young plant stages

Abstract

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.

Response of African Basil (Ocimum gratissimum L.) to Salt Stress under Tropical Conditions in the Republic of Benin: Growth, Ions and Organic Solutes Accumulation

“…Thus, salinity effect on African basil plant growth depends on the growth parameter taken into account. This result corroborated those reported in other vegetable species including sweet basil [21,19,24,22,31]. According to the results, root fresh mass followed by shoot fresh mass appeared to be the most salt sensitive parameters in basil and could be validly used to characterize the response of other African basil cultivars to salinity.…”

Response of tossa jute (Corchorus olitorius L.) salt stressed plants to external application of calcium and potassium

“…In Benin, tossa jute (Corchorus olitorius L.), commonly called "crincrin" occupies an important place in the diet of the population and is one of the most widely practiced market garden crops (Savi, 2009). In our previous study, we have reported that NaCl salt stress reduced tossa jute plants growth and that the response varied greatly according to the cultivar (Loko et al, 2020). To mitigate the negative effects of salinity on plants and circumvent this stress, one of the techniques consists of adding macro elements such as potassium, calcium, magnesium or phosphorus to enrich the substrate used for growing plants.…”

Ions and Organic Solutes as Implicated in the Ameliorative Effect of Exogenous Application of Calcium on Salt Stressed Tomato (Lycopersicon esculentum Mill.) Plants

“…It is considered as the major abiotic factor that limits plant productivity and agricultural yield [1,2]. Several studies have reported that salts present in soil and in irrigation water reduce plant growth [3][4][5][6][7][8][9][10] and consequently reduce crop production. Soil salinity affects plant growth, either through osmotic effects or ionic toxicity effects.…”