Effects of CO2 on growth and photosynthesis of Pyrrosia piloselloides (L.) price gametophytes

Abstract

The effects of CO2 concentration on spore germination, growth, and net photosynthetic rate (P(N)) of gametophytes of a tropical epiphytic fern, Pyrrosia piloselloides, were investigated over a 100-d period. Increasing CO2 concentration stimulated spore germination and enhanced gametophytic growth. The appearance of sexual organs and formation of sporophytes were accelerated with higher CO2 during growth. Radiant energy saturated P(N) and dark respiration rate also increased with increasing CO2 concentrations during growth.