biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 48:255-260, 2004 | DOI: 10.1023/B:BIOP.0000033453.24705.f5

Zinc-Induced Changes in Morpho-Physiological and Biochemical Parameters in Artemisia annua

T. Khudsar1, Mahmooduzzafar1, M. Iqbal1, R.K. Sairam2,*
1 Department of Botany, Hamdard University, New Delhi, India
2 Division of Plant Physiology, Indian Agricultural Research Institute, New Delhi, India

Responses of Artemisia annua to different concentrations of zinc [50, 100, 200, 300 and 400 μg g-1(soil dry mass)] were studied during plant ontogeny. Total leaf area, dry mass of leaves, length and dry mass of shoots and roots increased with the age of the plant but the magnitude of increase declined significantly under the influence of Zn treatment. Net photosynthetic rate, intercellular carbon dioxide concentration and stomatal conductance were highest at flowering stage in control and treated plants and decreased at post flowering stage. Contents of chlorophyll a, chlorophyll b, carotenoids, proteins and nitrate reductase activity in leaves increased from pre-flowering to maximum level at flowering stage and decreased thereafter in both control and treated plants. Presence of Zn in the soil drastically decreased/inhibited all the parameters, and the magnitude of decline increased with increasing Zn concentration.

Keywords: carotenoids; chlorophyll; dry matter; growth; leaf area; net photosynthetic rate; nitrate reductase activity; protein; stomatal conductance; zinc
Subjects: Artemisia annua; carotenoids, zinc; chlorophyll, zinc; gas exchange, zinc; growth analysis, plant development, biomass and yield enhancement; nitrate reductase; protein, zinc, photosynthesis; root, zinc; stomatal conductance, zinc; zinc, gas exchange, chlorophyll

Published: June 1, 2004  Show citation

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Khudsar, T., Mahmooduzzafar,, Iqbal, M., & Sairam, R.K. (2004). Zinc-Induced Changes in Morpho-Physiological and Biochemical Parameters in Artemisia annua. Biologia plantarum, 48(2), 255-260. doi: 10.1023/B:BIOP.0000033453.24705.f5
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