Variability in leaf and crown morphology correlated with light availability in five natural populations of Quercus castaneifolia C.A. Mey F., Jalali S.G., Sohrabi H., Shirvany A. (2017): Variability in leaf and crown morphology correlated with light availability in five natural populations of Quercus castaneifolia C.A. Mey. J. For. Sci., 63: 275-281.
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In this study, we investigate seedlings of Quercus castaneifolia C.A. Mey, from five different provenances for the research on leaf and crown morphological variations in relation to a light gradient under controlled conditions in a greenhouse. The results show that significant variations occurred in many parameters due to the effects of light availability. The seedling responses to low light include the proportional allocation of more biomass to leaves, leading to higher leaf mass, leaf area, crown area, specific leaf area and leaf area ratio, in contrast, the seedlings grown in high irradiance faced a high temperature resulting in higher transpiration. At this period, seedlings alter their leaf and crown size to prevent overheating. In this experiment, in spite of the same treatments in controlled conditions in a greenhouse, the seedlings from different provenances indicate different responses to light levels. It seems that the seedlings try to maximize their surface area for the intake of light as the most limiting resource in wet provenances. Such responses under the same treatment are adaptive strategies which allow oak seedlings to have the best function under stressed conditions. For Q. castaneifolia as a species with broad fundamental niches in Hyrcanian forests, these variations may be achieved by a combination of genotypic differentiation and phenotypic plasticity.
BLOOR J. M. G., GRUBB P. J. (2004): Morphological plasticity of shade-tolerant tropical rainforest tree seedlings exposed to light changes. Functional Ecology, 18, 337-348
Davi H., Barbaroux C., Dufrêne E., François C., Montpied P., Bréda N., Badeck F. (2008): Modelling leaf mass per area in forest canopy as affected by prevailing radiation conditions. Ecological Modelling, 211, 339-349
Delagrange Sylvain (2011): Light- and seasonal-induced plasticity in leaf morphology, N partitioning and photosynthetic capacity of two temperate deciduous species. Environmental and Experimental Botany, 70, 1-10
Dengler Nancy, Kang Julie (2001): Vascular patterning and leaf shape. Current Opinion in Plant Biology, 4, 50-56
Domroes M., Kaviani M., Schaefer D. (1998): An Analysis of Regional and Intra-annual Precipitation Variability over Iran using Multivariate Statistical Methods. Theoretical and Applied Climatology, 61, 151-159
Fila Gianni, Sartorato Ivan (2011): Using Leaf Mass per Area as predictor of light interception and absorption in crop/weed monoculture or mixed stands. Agricultural and Forest Meteorology, 151, 575-584
Franks N. R., Britton N. F. (2000): The possible role of reaction-diffusion in leaf shape. Proceedings of the Royal Society B: Biological Sciences, 267, 1295-1300
James S. A., Bell D. T. (2000): Influence of light availability on leaf structure and growth of two Eucalyptus globulus ssp. globulus provenances. Tree Physiology, 20, 1007-1018
Kelly Jeffrey, Jose Shibu, Nichols J. Doland, Bristow Mila (2009): Growth and physiological response of six Australian rainforest tree species to a light gradient. Forest Ecology and Management, 257, 287-293
Markesteijn Lars, Poorter Lourens (2009): Seedling root morphology and biomass allocation of 62 tropical tree species in relation to drought- and shade-tolerance. Journal of Ecology, 97, 311-325
Poorter L. (1999): Growth responses of 15 rain-forest tree species to a light gradient: the relative importance of morphological and physiological traits. Functional Ecology, 13, 396-410
Rice Stanley A., Bazzaz F. A. (1989): Growth consequences of plasticity of plant traits in response to light conditions. Oecologia, 78, 508-512
Roche P., Diaz-Burlinson N., Gachet S. (2004): Congruency analysis of species ranking based on leaf traits: Which traits are the more reliable? Plant Ecology, 174: 37–48.
Rouhi-Moghaddam Einollah, Hosseini Seyed Mohsen, Ebrahimi Ezzatollah, Tabari Masoud, Rahmani Ahmad (2008): Comparison of growth, nutrition and soil properties of pure stands of Quercus castaneifolia and mixed with Zelkova carpinifolia in the Hyrcanian forests of Iran. Forest Ecology and Management, 255, 1149-1160
ROZENDAAL D. M. A., HURTADO V. H., POORTER L. (2006): Plasticity in leaf traits of 38 tropical tree species in response to light; relationships with light demand and adult stature. Functional Ecology, 20, 207-216
Sabeti H. (1994): Forests, Trees and Shrubs of Iran. Yazd, Yazd University Press: 886.
Sugiura Daisuke, Tateno Masaki, Niedz Randall (2011): Optimal Leaf-to-Root Ratio and Leaf Nitrogen Content Determined by Light and Nitrogen Availabilities. PLoS ONE, 6, e22236-
Valladares F., Martinez-Ferri E., Balaguer L., Perez-Corona E., Manrique E. (2000): Low leaf-level response to light and nutrients in Mediterranean evergreen oaks: A conservative resource-use strategy? New Phytologist, 148: 79–91.
Xu F., Guo W., Xu W., Wang R. (2008): Habitat effects on leaf morphological plasticity in Quercus acutissima. Acta Biologica Cracoviensia Series Botanica, 50: 19–26.
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