Eco-physiological studies on Indian arid zone plants |
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Authors: | W. Huber N. Sankhla H. Ziegler |
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Affiliation: | (1) Botany Department, Technical University, Munich |
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Abstract: | Summary Photosynthetic characteristics of two important grasses of Indian desert have been studied. Pennisetum typhoides, an important cereal crop, known to have Kranz-type leaf anatomy and low CO2-compensation point, shows the C-4-dicarboxylic acid pathway for photosynthetic carbon reduction. Lasiurus sindicus, a promising forage grass, has also been shown to possess, for the first time, a typical Kranz-type leaf anatomy and a very similar CO2-fixation pattern like Pennisetum typhoides. It is remarkable that both species after short time exposure to 14CO2 show a high labelling not only in malate but also in alanine. This may be due to the activity of an aspartic acid decarboxylase. |
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