Intraspecies diversity in the response of net photosynthesis in cucumber plants to elevated concentrations of atmospheric carbon dioxide.

摘要

Relationships between net photosynthesis of intact cucumber plants (cultivars Alma-Atinskii 1, Teplichnyi rannii 65, and Syurpriz 66) and irradiance (5,14, 23 klx), air (15, 26.5 and 38deg C) and soil (14, 22 and 30 degree C) temperatures, and ambient CO2 concentration (0.06, 0.18 and 0.30%) were simulated by the multifactorial method. Analysis of the models demonstrated marked cultivar-specific differences in plant responses to environmental conditions, in terms of both the potential highest values and conditions for their expression. It is concluded that the models of relationships between CO2 exchange in intact plants and environmental conditions can be used for the assessment of biological diversity at the intraspecies level.