Lavergne, D. and Bismuth, E. and Sarda, C. and Champigny, M.L. (1979) Physiological Studies on two Cultivars of Pennisetum: P. americanum 23 DB, a Cultivated Species and P. mollissimum, a Wild Species: II. Effects of Leaf Age on Biochemical Characteristics and Activities of the Enzymes Associated with the Photosynthetic Carbon Metabolism. Zeitschrift für Pflanzenphysiologie, 93 (2). pp. 159-170.
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Abstract
Two genotypes of Pennisetum were studied for biochemical characteristics and enzyme activities associated with photosynthetic carbon metabolism with regard to the effect of leaf age. Research was conducted with fully just expanded 4th leaves from 12 to 35 day old plants. Growth analysis, leaf area, protein and starch content, chlorophyll content, and dry weight were investigated. All these parameters were higher for P. mollissimum compared to P. americanum. Starch content of leaves was always higher in P. mollissimum. The PEP carboxylase activity was highest in young leaves and decreased rapidly with subsequent full leaf expansion. For RuBP carboxylase, the activity increased quickly until full leaf expansion. The ratio PEP carboxylase/RuBP carboxylase activity was high in young tissue as expected for C4 type plants. Mature leaf tissue had a ratio of 1, a value nearer to the C3 type plant. These data indicate that there are physiological changes which occur during development of Pennisetum leaves.
| Item Type: | Article |
|---|---|
| Author Affiliation: | Universite de Paris-Sud, Centre d'Orsay, Physiologie Cellulaire Vegetale, Batiment 430, F-91405 Orsay Cedex, France. |
| Subjects: | Plant Protection Crop Improvement |
| Divisions: | General Millet |
| Depositing User: | Library ICRISAT-InfoSAT |
| Date Deposited: | 11 Apr 2012 14:23 |
| Last Modified: | 11 Apr 2012 14:23 |
| Official URL: | http://www.sciencedirect.com/science/article/pii/S... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/4639 |
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