Acclimation of acacia hybrid (Acacia mangium x Acacia auriculiformis) vegetative propagules to soil water deficits
Treść / Zawartość
The aim of the present work was to investigate the acclimation potential of acacia hybrid (Acacia mangium Willd×Acacia auriculiformis A.Cunn.ex Benth)vegetative propagules to soil water stress in the nursery of Institute of Forestry and Environmental Sciences, Chittagong University. Acacia hybrid showed significant decrease in total plant biomass in two months water-stressed conditions. Allocation of assimilates to root growth relative to shoot found to be an important acclimation mechanism. Leaf area ratio (LAR)increased under water-stressed plants with simultaneous increase in specific leaf area (SLA)but almost no change in leaf weight ratio (LWR). Significant increase in LAR with limited water supply by increasing SLA was likely to be an important acclimation potential since this relative increase in leaf area compensated, at least partially, for a lower photosynthesis under water-stressed conditions aswas evident from decreased mean total biomass under water-stressed regimes.
- Ackerson R.C., Herbert R.R. 1977. Osmoregulation in cotton in response to water stress. I. Alteration in photosysthesis, leaf conductance, translocation and ultrastructure. Plant Physiolgy 67: 484–488.
- Angus J.F., Moncur M.W. 1977. Water stress and phenology in wheat. Australian Journal of Agricultural Research 28: 177–181.
- Bachelard E.P. 1986. Effects of soil moisture stress on the growth of seedlings of three Eucalyptus species. II. Growth effects. Australian Forestry Research 16: 51–61.
- Briggs G.E., Kidd F., West C. 1920. A quantitative analysis of plant growth, II. Annals of Applied Biology 7: 202–23.
- Dawkins H.C. 1975. Statforms ‘Proformas’ for the guidance of statistical calculations. Edward Arnold (Publishers)Ltd. 25 Hill Street, LondonW1X8LL.
- Downton W.J.S., Loveys B.R., Grant W.J.R. 1988. Non-uniform stomatal closure induced by water stress causes putative nonstomatal inhibition of photosynthesis. New Phytologist 110: 503–510.
- Freese F. 1967. Elementary statistical methods for foresters. Agriculture Handbook 317. U. S. Department of Agriculture, Forest Service. Washington, D. C. 20402.
- Gollan T., Passioura J.B., Munns R. 1986. Soil water status affects the stomatal conductance of fully turgid wheat and sunflower leaves. Australian Journal of Plant Physiology 13: 459–464.
- Hassan M.M. 1987. Working depth for tree planting in relation to soil moisture control section and texture. Indian Journal of Forestry 10: 89–93.
- Khalil A.A.M., Grace J. 1992. Acclimation to Drought in Acer pseudoplatanus L. (Sycamore)Seedlings. Journal of Experimental Botany 43(257): 1591–1602.
- Kramer P.J. 1983. Water relations of plants. Academic press, Inc. New York.
- Ludlow M.M. 1980. Adaptive significance of stomatal responses to stress. In: Turner NC, Kramer PJ (Eds.)Adaptations of plants to water and high temperature stress. pp. 123–138. Wiley and Sons. New York.
- Masle J., Passioura J.B. 1987. The effects of soil strength on the growth of young wheat plants. Australian Journal of Plant Physiology 14: 643–656.
- Matthews M.A., Boyer J.S. 1984. Acclimation of photosynthesis to low leaf water potentials. Plant Physiology 74: 161–166.
- Metcalfe J.C., Davies W.J., Pereira J.S. 1989. Effects of water deficit on leaf growth and initiation of fast growing tree species. Annual Science Forestry Supplement 46: 366–368.
- Michael D.A., Isebrands J.G., Dickmann D.I., Nelson N.D. 1988. Growth and development during the establishment year of two Populus clones with contrasting morphology and phenology. Tree Physiology 4: 139–152.
- Mohiuddin M. 1992. Plant water relations in a model Agroforestry system. Unpublished Ph. D. thesis, University of Edinburgh, England.
- Molyneux D.E.,Davies W.J. 1983. Rooting pattern and water relations of three pasture grasses growing in drying soil. Oecologia 58: 220–224.
- Osonubi O. 1985. Responses of cow-peas (Vigna unguiculata L.Walp)to progressive soil drought. Oecologia 66: 554–557.
- Osonubi O., Fasehun F.E. 1987. Adaptations to soil drying in woody seedlings of African locust bean. Tree Physiology 3: 321–330.
- Seiler J.R., Cazell B.H. 1990. Influence of water stress on the physiology and growth of red spruce seedlings. Tree Physiology 6: 69–77.
- Shearman L.L., Eastin J.D., Sullivan C.Y., Kinbacher E.J. 1972. Carbon dioxide exchange in water stressed sorghum. Crop Science 12: 406–409.
- Srinivasa-Rao N.K., Bhatt R.M. 1988. Photosynthesis, transpiration, stomatal diffusive resistance, and relative water content of capsicum (Bell Pepper) grown under water stress. Photosynthetica 22: 377–382.
- Turner N.C. 1986. Adaptation to water deficits: a changing perspective. Australian Journal of Plant Physiology 13: 175–190.
- Zaman S.M.H., Rahim K., Howladar M. 1982. Simple Lessons From Biometry. Bangladesh Rice Research Institute, Joydebpur, Dhaka, Bangladesh.