Biologia plantarum 45:137-139, 2002 | DOI: 10.1023/A:1015189616477
Content of Oxalate in Actinidia Deliciosa Plants Grown in Nutrient Solutions with Different Nitrogen Forms
- 1 Dipartimento di Biologia Vegetale, Università degli Studi di Firenze, Firenze, Italy
- 2 Dipartimento Provinciale ARPAT, Firenze, Italy
Kiwifruit plants (Actinidia deliciosa cv. Hayward) were grown in Hoagland nutrient solution with calcium nitrate, potassium nitrate, ammonium nitrate or ammonium chloride as the nitrogen source. Plants grown in the solution with nitrate nitrogen displayed a higher oxalate content, greater shoot length and leaf area, and higher content of ascorbic acid and NO3- ions in the leaves. Plants grown in the solution with ammonium nitrate, and particularly with ammonium chloride, showed low oxalate content, low content of ascorbic acid and NO3-, high content of Cl- and Na+, low shoot length and leaf area. Oxalate formation appeared to be connected with the assimulation of nitrate, more precisely with nitrate reduction, while ammonium nitrogen assimilation did not induce the synthesis of oxalic acid.
Keywords: ammonium; ascorbic acid; nitrate; oxalate; plant nutrition
Subjects: Actinidia deliciosa; ascorbic acid, nitrogen forms; in vitro culture, nutrient media modification; kiwifruit, nitrogen forms; nitrogen forms; oxalate content, nitrogen forms
Published: March 1, 2002 Show citation
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