Vulnerability to freeze stress of seedlings of Quercus ilex L.: an ecological interpretation
نویسندگان
چکیده
منابع مشابه
Ecological significance of seed desiccation sensitivity in Quercus ilex.
BACKGROUND AND AIMS Several widespread tree species of temperate forests, such as species of the genus Quercus, produce recalcitrant (desiccation-sensitive) seeds. However, the ecological significance of seed desiccation sensitivity in temperate regions is largely unknown. Do seeds of such species suffer from drying during the period when they remain on the soil, between shedding in autumn and ...
متن کاملLife-long growth of Quercus ilex L. at natural CO
The aim of the present study was to analyse whether offspring of mature Quercus ilex trees grown under life-long elevated p CO 2 show alterations in the physiological response to elevated p CO 2 in comparison with those originating from mature trees grown at current ambient p CO 2 . To investigate changes in C(for changes in photosynthesis, biomass and lignin see Polle, McKee & Blaschke Plant, ...
متن کاملPhysiological and biochemical responses of Quercus brantii seedlings to water deficit stress
Water shortage is one of the most important environmental stresses in Mediterranean regions. Poor seedling quality may account for the failure of oak regeneration. To determine the best seed origin of Quercus brantii, we investigated on seedlings collected from 20 mother trees in the Zagros Mountain forests 700 to 2200 m altitudes above sea level. Seedlings from different altitudes were irrig...
متن کاملComparison antibacterial activity of Quercus persica and Quercus ilex
Plants extracts has been used in traditional medicine for many years. The use of them has the least side effects in comprison to the synthetic drugs. The aim of this study was investigation and comparision of biological active components of Quercus persica and Quercus ilex. Sampling was done from Quercus persica and Quercus ilex stands. The antibacterial activity was assayed against Psuodomonas...
متن کاملComparison antibacterial activity of Quercus persica and Quercus ilex
Plants extracts has been used in traditional medicine for many years. The use of them has the least side effects in comprison to the synthetic drugs. The aim of this study was investigation and comparision of biological active components of Quercus persica and Quercus ilex. Sampling was done from Quercus persica and Quercus ilex stands. The antibacterial activity was assayed against Psuodomonas...
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ژورنال
عنوان ژورنال: Annales des Sciences Forestières
سال: 1998
ISSN: 0003-4312
DOI: 10.1051/forest:19980503