Effects of NaCl and NaHCO3 stress on morphological growth and nutrient metabolism on selected avocados (Persea americana Mill.) |
| |
| Authors: | Carlos Alvarez-Acosta Antonio Marrero-Dominguez Luisa Gallo-Llobet Agueda M Gonzalez-Rodriguez |
| |
| Institution: | 1. Departamento de Ingenieria Agraria, Nautica, Civil y Maritima, Universidad de La Laguna, La Laguna, Spain;2. Departamento de Proteccion Vegetal, Instituto Canario de Investigaciones Agrarias (ICIA), La Laguna, Spain;3. Departamento de Proteccion Vegetal, Instituto Canario de Investigaciones Agrarias (ICIA), La Laguna, Spain;4. Departamento de Botanica, Ecologia y Fisiologia Vegetal, Universidad de La Laguna, La Laguna, Spain |
| |
| Abstract: | The effect of alkali stress on crop production has gained importance around the world. Avocado (Persea americana Mill.) is considered a salt-sensitive species, but the effect of alkaline water on avocados has not been sufficiently studied. Plant growth, leaf damage, and chemical analysis were evaluated in response to alkali salt (NaHCO3) and neutral salt (NaCl) stresses on six clonally propagated avocado rootstocks. All plants exhibited exclusion mechanisms by the accumulation of Na+ and Cl? in their root systems, Na+ was concentrated to a greater extent than Cl?. The accumulation of Na+ in the leaves was greater when applied as NaHCO3 compared to the NaCl treatment. Although Cl? toxicity is more commonly observed under usual field conditions, in our experiments when Na+ reached the leaves it caused nearly two times more leaf necrosis. |
| |
| Keywords: | alkali stress chloride leaf damage salt stress sodium |
|
|
