Effects of different salt and alkali stresses on ion distribution in Red globe/Beta grapevines.

The potted Red globe/Beta grapevines were selected to irrigated with NaCl, Na₂ SO₄, NaHCO₃, NH₄Cl, (NH₄)₂SO₄. Hence, the ions which induced leaf etiolation were screened and the impacts of different salt and alkali on ion distribution in different organs of grapevines were investigated. It was found that NaHCO₃ exerted the greatest effects on grapevines, leaf etiolation at 14 days after treatment. By contrast, NaCl and NH₄Cl treatments induced leaf etiolation at 28 days after treatment. The Na⁺ content in all the detected organs were significantly increased under NaHCO₃ and NaCl treatment, and Na⁺ content in root under NaHCO₃ treatment was 6.4 times as that in control root. NaHCO₃ and NaCl treatments significantly decreased K⁺ content in the organs with the exception of leaf. NaHCO₃ treatment significantly decreased K/Na in different organs, which declined to 0.1 in root. By contrast, NaCl treatment significantly decreased K/Na in the detected organs with exception of stem. Besides, the transport of Ca²⁺, Mg²⁺, Fe²⁺ to aboveground organs was significantly decreased by NaHCO₃ and NaCl treatments. K/Na ratio in the detected organs were decreased under NH₄Cl, (NH₄)₂SO₄ and Na₂SO₄ treatments, especially under NH₄ Cl treatment. Taken together, NaHCO₃ was the primary factor resulting in leaf etiolation, followed by NaCl and NH₄Cl, while (NH₄)₂SO₄ and Na₂SO₄ produced impacts. [ABSTRACT FROM AUTHOR]