Biologia plantarum 46:605-608, 2003 | DOI: 10.1023/B:BIOP.0000041071.58437.e6
Effect of Soil Moisture on the Gas Exchange of Changium smyrnioides and Anthriscus sylvestris
- 1 College of Life Science, Zhejiang University, P.R, China
- 2 Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P.R, China
The effect of soil moisture on gas exchange and growth of an endangered species, Changium smyrnioides, was compared with a non-endangered species, Anthriscus sylvestris. The two species belong to the same family Umbellaceae. With the decrease of soil moisture, the net photosynthetic rate (PN) and transpiration rate (E) decreased, while water use efficiency (WUE) increased, PN and WUE of C. smyrnioides were lower than those of A. sylvestris, whereas E was higher than that of A. sylvestris. The biomass, leaf mass ratio (LMR) and leaf area ratio (LAR) of C. smyrnioides were lower than those of A. sylvestris. Under drought, biomass. LMR and LAR of C. smyrnioides decreased more steeply than those of A. sylvestris, whereas specific root length (SRL) of C. smyrnioides was higher, compared to that of A. sylvestris. The present study indicated that C. smyrnioides accumulated less biomass, and directed more biomass to roots than A. sylvestris.
Keywords: growth analysis; photosynthesis; physiological traits; structural traits; transpiration; water use of efficiency
Subjects: Anthriscus sylvestris; Changium smyrnioides; gas exchange, soil moisture; growth analysis, plant development, biomass enhancement; soil moisture, gas exchange; water use efficiency, soil moisture
Published: December 1, 2003Show citation
ACS | AIP | APA | ASA | Harvard | Chicago | IEEE | ISO690 | MLA | NLM | Turabian | Vancouver |
References
- Arora, A., Singh, V.P., Mohan, J.: Effect of nitrogen and water stress on photosynthesis and nitrogen content in wheat.-Biol. Plant. 44: 153-155, 2001. Go to original source...
- Barathi, P., Sundar, D., Reddy, A.R.: Changes in mulberry leaf metabolism in response to water stress.-Biol. Plant. 44: 83-87, 2001. Go to original source...
- Bell, D.L., Sultan, S.E.: Dynamic phenotypic plasticity for root growth in Polygonum: a comparative study.-Amer. J. Bot. 86: 807-819, 1999. Go to original source...
- Chang. J., Ge, Y., Lu, Y.J., Yin, X.W., Fan, M.-Y.: A comparison of photosynthesis in endangered and nonendangered plants Changiurm smyrnioides and Anthriscus svlvestriis-Photosynthetica 40: 445-447. 2002. Go to original source...
- Fenner. M.: A comparison of the abilities of colonizers and closed-turf species to establish from seed in artificial swards.-J. Ecol. 66: 953-963, 1978. Go to original source...
- Garg, B.K., Kathju, S., Burman, U.: Influence of water stress on water relations, photosynthetic parameters and nitrogen metabolism of moth bean genotypes.-Biol. Plant. 44: 289- 292, 2001. Go to original source...
- Grime, J.P., Hodgson, J.G., Hunt, R.: Comparative Plant Ecology. Unwin Hyman, London 1988. Go to original source...
- Gross, K. L.: Effects of seed size and growth form on seedling establishment of six monocarpic plants.-J. Ecol. 72: 309-387, 1984. Go to original source...
- Hunt, R.: Plant Growth Analysis. Edward Arnold, London 1978.
- Larcher. W.: Okophysiologie der Pflanzen.-Eugen Ulmer. Stuffgart 1994.