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| Titel: |
Dry matter yield, nitrogen absorption, and water uptake by sweet corn under salt stress |
| Auteur: |
Pessarakli, M. Huber, J. T. Tucker, T. C. |
| Verschenen in: |
Journal of plant nutrition |
| Paginering: | Jaargang 12 (1989) nr. 3 pagina's 279-290 |
| Jaar: |
1989-03 |
| Inhoud: |
The response to salinity differs greatly among various plant species. This study was conducted to evaluate the effects of NaCl salinity on growth of corn in terms of dry matter production and nitrogen and water uptake. Dry matter yield and N and water uptake by sweet corn (Zea mays L; cv. “Florida Stay Sweet") under normal (control) and NaCl salinized (3, 6, and 9 bars osmotic pressures) nutrient solutions were investigated in a walk-in growth chamber. The 7-day old seedlings were grown for 14 days in complete Hoagland solution before starting salt treatments. Then, osmotic pressures of the nutrient solutions (except the controls) were raised 1 bar every day by adding 24 mmol, 1.404 g L-1, NaCl until the desired (3, 6, and 9 bars) salinity levels were attained. The levels of the nutrient solutions in the pots were maintained at the 2-liter mark by addition of deionized water. The added water to each pot was recorded and considered as water absorbed by plants. Thirty days after the completion of salt treatments, plants were harvested and dry matter yield and total N uptake of plants were determined. Increasing the osmotic pressures of culture solutions decreased total dry matter production and N and water uptake by plants. Nitrogen concentration was substantially higher in salinized plants as compared with the controls. Water use efficiency of plants decreased markedly by increasing salinity. Dry matter yield and water uptake were affected to a greater extent than N uptake by plants under salt stress conditions. It appears that any level of NaCl in root medium is detrimental to corn growth in terms of dry matter production and N and water uptake. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 2 van 10 gevonden artikelen
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