Abstract
Relationship between salt tolerance and Ca^2+ retention among plant species was investigated using salt tolerant maize (Zea mays) and squash (Cucurbita maxima), and salt sensitive reed canarygrass (Phalaris arundinacea) and cucumber (Cucumis sativus). Ca^2+ was released extensively from root sections and intact roots of the salt sensitive plants by treatment with salt solutions. Distribution of Ca^2+ in shoot also decreased markedly in the salt sensitive plants by the treatment with the salt solutions. These results suggest that the ability of plants to retain Ca^2+ is associated with their salt tolerance.
