Impact of saline water stress on nutrient uptake and growth of cowpea

Abstract

Soil salinity is a major limitation to crops production in many areas of the world. The present study reports the impact of salt stress on seeds germination, plant growth parameters and leaf ions accumulation in three cowpea [Vigna unguiculata (L. . On the other hand, height and weight of all cultivars were less affected by the salt stress. Only at 10 dS m −1 EC, significant reduction in plant height and root length could be found for all three cultivars. Salinity induced a significant increase in Na + , Cl − and proline concentrations, while reduced the accumulation of K + and Ca 2+ in leaves of all the cultivars. Moreover, the tolerance difference between the cultivars was better observed at the lowest levels of salt stress, as reveled in the measurements of K + /Na + ratio and proline content. In conclusion, this study characterizes Akshay-102 as the most tolerant cultivar and establishes the measurements of germination capacity, K + /Na + ratio and proline accumulation as an important features to be explored in programs for selection and/or development of tolerant cultivars which make possible the utilization of waste saline water as well as the cultivation of vast areas of the tropical world affected by salinity.

Arbuscular mycorrhizal fungi enhance growth, physiological parameters and yield of salt stressed Phaseolus mungo (L.) Hepper

“…In the present experiment, mycorrhizal inoculation of plants also improved potassium uptake under different salinity levels. Our results confirm the findings of Patel et al (2010) and Abd Allah et al (2015). The decrease in the uptake of potassium, with increase in salinity recorded in this experiment is due to a high concentration of so-dium within the root zone, which has an antagonistic effect.…”

Modulation of ion uptake in tomato (Lycopersicon esculentum L.) plants with exogenous application of calcium under salt stress condition

“…The lowest Ca 2+ /Na + ratio (0.80) was recorded from 8 dS m -1 Na, possibly the higher levels of salinity decreased the Ca 2+ uptake, whereas the Na + uptake was increased. Ca 2+ /Na + ratio was also decreased with increased salinity concentration which was reported by Shabala et al (2003); Patel (2010).…”

Genotypic variation in tolerance to salinity of common beans cultivated in Western Cameroon as assessed at germination and during early seedling growth

“…The trend of Na + accumulation in the leaves of the studied genotypes therefore occurred reciprocally to a trend in K + de-accumulation. Studies on barley (Wolf et al 1991), cowpea (Patel et al 2010) and soybean (Li et al 2006) reported similar results. These nutrient deficiencies are likely the cause of the delayed growth due to soil saline in the present study.…”