biologia plantarum

International journal on Plant Life established by Bohumil Nìmec in 1959

Biologia plantarum 43:35-39, 2000 | DOI: 10.1023/A:1026542727558

Effects of Some Growth Regulators on Young Iron Deficient Maize Plants

V.R. Nenova1, I.G. Stoyanov1
1 Institute of Plant Physiology "M. Popov", Bulgarian Academy of Sciences, Sofia, Bulgaria

Young maize plants, grown hydroponically, were supplied with 1/10 the optimal amount of iron (0.75 mg dm-3). Foliar treatments with solutions, containing N6-benzyladenine (BA), indole-3-acetic acid (IAA) or (2-chloroethyl)-trimethylammoniumchloride (CCC) were conducted after chlorosis had been well manifested. Changes in growth, chlorophyll content, rate of photosynthesis, catalase and peroxidase activities in leaves, and the contents of Fe, Cu, Zn, Mn, and P in leaves were recorded. Growth regulators improved (CCC, IAA) or aggravated (BA) the physiological state of chlorotic plants. Their effect might be explained by changes in Fe transport towards the leaves, by increased efficiency of Fe utilization, and by effects on plant metabolism not involving Fe.

Keywords: benzyladenine; CCC; chlorophyll; chlorosis; indole-3-acetic acid; nutrient elements; phytohormones; Zea mays
Subjects: catalase, iron deficiency; chlorophyll fluorescence, growth regulators; chlorosis, iron deficiency; copper, photosynthesis, iron deficiency; fluorescence, chlorophyll, growth regulators; fluorescence, chlorophyll, iron deficiency; iron deficiency, growth regulators; maize, iron deficiency, growth regulators; manganese, photosynthesis, iron deficiency; peroxidase, iron deficiency; phosphorus, photosynthesis, iron deficiency; photosynthetic rate, iron deficiency; Zea mays; zinc, photosynthesis, iron deficiency

Published: March 1, 2000  Show citation

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Nenova, V.R., & Stoyanov, I.G. (2000). Effects of Some Growth Regulators on Young Iron Deficient Maize Plants. Biologia plantarum, 43(1), 35-39. doi: 10.1023/A:1026542727558
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