Effects of NaCl and KC1 Salinity on Growth and Ionic Relations of Red Kidney Beans (Phaseolus vulgaris L.)

Abstract

Growth and ionic relations of red kidney bean plants were compared when grown in 25, 50 and 75 mM concentrations of either NaCl or KCl salts. Similar growth reductions of plants at 25 mM concentration of the two solutions were observed as compared with control solution grown plants. Whereas relatively higher growth reductions indicated by reduced relative growth rates in 50 and 75 mM KC1 solution as compared with isosmotic NaCl solutions were associated with higher Cl and K uptake and accumulation in leaves. This was confirmed by higher short‐term 36Cl uptake/transport in plant leaves from the labelled solution of 50 mM KCl as compared with that from 50 mM NaCl solution.

Calcium amelioration of NaCl effects on plant rowth, chlorophyll, and ion concentration nPhaseolus vulgaris

“…Although the presence of Ca has been shown to exclude Na from leaves and stems through selective ion transport at the plasma membrane in NaCl-treated plants , Cramer et al 1985, Hanson 1984, LaHaye and Epstein 1971, the addition of 4 and 8 mM of Ca did not significantly affect leaf Na + levels within any of the NaCI treatments. Increasing NaCI concentrations increased both the leaf Na + and K + levels, results similar to those reported by Salim (1989). However, the K + /Na + ratio decreased as NaCI increased (Fig.…”

Growth and mineral nutrition of six rapid-cycling Brassica species in response to seawater salinity

“…Among the six Brassica species tested, B. tively, while the other four species were considered as moderately salt-tolerant. Salinity caused remarkable changes in ion concentrations in the shoots of these six Brassica species, corroborating a number of studies on other species, such as cotton, kidney bean and grass species (Cramer et al, 1991;Elzam and Epstein, 1969;Rathert, 1983;Salim, 1989). However, the most saltsensitive species, B. carinata in our study, was considered a salt-tolerant species in an earlier report (Ashraf and McNeilly, 1990).…”

“…For example, isosmotic concentrations of KCI and NaCI caused growth reductions to different degrees (Bernstein, 1975;Cramer et al, 1990;Salim, 1989). For example, isosmotic concentrations of KCI and NaCI caused growth reductions to different degrees (Bernstein, 1975;Cramer et al, 1990;Salim, 1989).…”

Salinity–mineral nutrient relations in horticultural crops

“…As a result, K levels in the cell sap of bean leaves increased with increasing NaCl-salinity (Meiri et al, 1971;Cachorro et al, 1993). Often, however, leaf-Na accumulation increases in concert with leaf-K and both K / Na ratio and K :Na selectivity coefficient decrease with increases in salinity (Salim, 1989;Akhavan-Kharazian et al, 1991;Cachorro et al, 1993). Ruiz et al (1997) examined K uptake and transport by citrus rootstocks.…”