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Accumulation of Ions in Shoot and Seed of Quinoa (Chenopodium quinoa Willd.) Under Salinity Stress.
- Source :
- Communications in Soil Science & Plant Analysis; 2019, Vol. 50 Issue 6, p782-793, 12p
- Publication Year :
- 2019
-
Abstract
- Quinoa (Chenopodium quinoa Willd.) is a high-nutrient halophyte suitable for cultivating in semi-arid climates and saline soils. The current study investigated the effect of various water salinities (EC<subscript>i</subscript>) (i.e., 0.3, 10, 15, 20, and 25 dS m<superscript>−1</superscript>) and different irrigation methods (IMs) on accumulation of calcium (Ca), magnesium (Mg), sodium (Na), and chloride (Cl) ions in shoot (stem+leaves) of quinoa at the end of vegetation (onset of flowering) and seed at the end of seed-filling. Therefore, 30 pots (five EC<subscript>i</subscript> and two IM in three replications) were prepared with similar conditions. Considering that the salinity threshold value (STV) of quinoa varies during growth and is 8, 20 and 15 dSm<superscript>−1</superscript> at each of establishment, flowering, and seed-filling growth stages, the two IMs consisted of considering STV at each growth stage (T) and permanent irrigation by constant levels of EC<subscript>i</subscript>(P). Results indicated that by increasing the EC<subscript>i</subscript> from 0.3 to 25 dSm<superscript>−1</superscript> the amount of Na, Cl, and Mg in shoot increased 82.2%, 75.8%, and 8.7%, respectively, while Ca decreased 37.2%. In seeds, Na and Cl increased 43.3% and 50%, respectively, while Mg increased 8% and Ca did not change significantly. An increase in EC<subscript>i</subscript> significantly changed ion accumulation content, especially at EC<subscript>i</subscript> higher than STV, because it is the onset of damage due to salinity stress and particularly in shoot compared to seed due to the halophytic properties of quinoa. The T method of irrigation was preferred due to less accumulation of Na and Cl in shoot and seed, and therefore less damage and loss, especially at higher salinities. [ABSTRACT FROM AUTHOR]
- Subjects :
- QUINOA
GOOSEFOOTS
SOIL salinity
SEEDS
SALINITY
IONS
Subjects
Details
- Language :
- English
- ISSN :
- 00103624
- Volume :
- 50
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Communications in Soil Science & Plant Analysis
- Publication Type :
- Academic Journal
- Accession number :
- 135935537
- Full Text :
- https://doi.org/10.1080/00103624.2019.1589486