Salt tolerance in soybean (Glycine max L.): Effect on growth and ionrelations
2001
Shereen, A. | Ansari, R. | Soomro, A.Q.,Nuclear Inst. of Agriculture,Tandojam (Pakistan)
A water culture experiment was conducted to study the growth and ionsrelations in four cultivars of soybean (Glycine max L., cv. Loppa, Egyptian,AGS-160 and ICAL-132) over a range of salinity (10-40 mM NaCl) at differentstages of development. Increase in salinity caused a significant decrease infresh and dry weight of shoot. Relative growth rate (RGR) decreased withincreasing salt levels and at different stages of development. Cv. AGS-160generally exhibited the lowest RGR and ICAL-132 the highest, while Loppa andEgyptian were intermediary. Sodium concentrations increased with increase insalinity while potassium concentration decreased. Salinity tolerance wasgenerally associated with efficient sodium regulation in shoot. Potassiumconcentration and K fluxes were the highest in control and decreased undersalinity. The magnitude of this reduction was dependent on the tolerance ofthe cultivars. A high K/Na ratio was generally associated with better salttolerance.
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Эту запись предоставил National Agricultural Research Centre