Journal ArticleDOI
Intraspecific variation in the response to CO2 enrichment in seeds and seedlings of Plantago lanceolata L
TLDR
Overall, high CO2 levels decreased seed weight, increased germination percentage and rate, and increased seedling size, which suggests the existence of genetic variability in P. lanceolata in response to CO2 enrichment.Abstract:
Four genotypes of P. lanceolata were grown to maturity at combinations of two levels of atmospheric CO2 concentrations and two temperature conditions. Seed weight was determined, and seed germination and seedling growth were measured for the progeny of each genotype under the same environmental conditions. Overall, high CO2 levels decreased seed weight, increased germination percentage and rate, and increased seedling size. Families differed in their response to CO2 enrichment, and to combinations of CO2 and temperature levels for several characters. These results suggest the existence of genetic variability in P. lanceolata in response to CO2 enrichment.read more
Citations
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Journal ArticleDOI
Maternal effects in plants
Deborah A. Roach,Renata D. Wulff +1 more
TL;DR: It is contention that despite evidence that maternal effects can have a large in fluence on offspring phenotype, few detailed studies have identified the specific causes of maternal effects, particularly in natural populations.
Journal ArticleDOI
The Response of Natural Ecosystems to the Rising Global CO2 Levels
TL;DR: Because CO2 is a greenhouse gas, its increase in the atmosphere may influence the earth's energy budget and influence world ecosystems by direct effects on plant growth and development.
Journal ArticleDOI
Allergenic pollen and pollen allergy in Europe
Gennaro D'Amato,Lorenzo Cecchi,Sergio Bonini,Sergio Bonini,Carlos Nunes,Isabella Annesi-Maesano,Isabella Annesi-Maesano,Heidrun Behrendt,Gennaro Liccardi,Todor A. Popov,P. Van Cauwenberge +10 more
TL;DR: Even though pollen production and dispersal from year to year depend on the patterns of preseason weather and on the conditions prevailing at the time of anthesis, it is usually possible to forecast the chances of encountering high atmospheric allergenic pollen concentrations in different areas.
Journal ArticleDOI
Plant growth and competition at elevated CO2 : on winners, losers and functional groups.
TL;DR: The effects of increased atmospheric CO2 concentrations on vegetative growth and competitive performance were evaluated, using five meta-analyses, and no systematic differences were found between slow- and fast-growing species.
Journal ArticleDOI
Impacts of climate change on aeroallergens: past and future.
TL;DR: There is now considerable evidence to suggest that climate change will have, and has already had, impacts on aeroallergens, which include impacts on pollen amount, pollen allergenicity, pollen season, plant and pollen distribution, and other plant attributes.
References
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Journal ArticleDOI
Carbon Dioxide and Agricultural Yield: An Assemblage and Analysis of 430 Prior Observations1
TL;DR: Evaluation des effets probables de l'augmentation de la teneur en CO 2 de l’atmosphere sur les rendements des cultures d’augmentations des cultures.
Journal ArticleDOI
Atmospheric carbon dioxide variations at Mauna Loa Observatory, Hawaii
Charles D. Keeling,Robert B. Bacastow,Arnold E. Bainbridge,Carl Ekdahl,Peter R. Guenther,Lee S. Waterman,John F. S. Chin +6 more
TL;DR: The Mauna Loa Observatory has been used for eight years (1964-1971) of a long term program to document the effects of the combustion of coal, petroleum, and natural gas on the distribution of CO, in the atmosphere as mentioned in this paper.
Journal ArticleDOI
Experimental ecological genetics in plantago
Lin Wu,Janis Antonovics +1 more
TL;DR: In P. lanceolata, there were no differences between populations from contrasting habitats with regard to proportion of leaves producing roots and shoots, and there was a high correlation between zinc tolerance measured on rooted leaves and on equivalent rooted tillers.
Journal ArticleDOI
Experimental ecological genetics in Plantago. X: The effects of maternal temperature on seed and seedling characters in P. lanceolata
Helen M. Alexander,Wulff Rd +1 more
TL;DR: The effects of maternal treatments on seed weight, percentage germination, and an index of germination rate were detectable in a second generation of Plantago lanceolata families.
Journal ArticleDOI
Effects of seed size on the germination, growth and competitive ability of rumex crispus and rumex obtusifolius
TL;DR: The results are interpreted in terms of the response of the Rumex species to grazing by the chrysomelid beetle, Gastrophysa viridula, to find out whether initial growth is slower from smaller seeds, though no difference is detectable at the end of the growing season.