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Intraspecific variation in the response to CO2 enrichment in seeds and seedlings of Plantago lanceolata L.

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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.

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Correspondence to Helen Miller Alexander.

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Wulff, R.D., Alexander, H.M. Intraspecific variation in the response to CO2 enrichment in seeds and seedlings of Plantago lanceolata L.. Oecologia 66, 458–460 (1985). https://doi.org/10.1007/BF00378315

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  • Seed Germination
  • Genetic Variability
  • Seed Weight
  • Seedling Growth
  • Germination Percentage