Abstract
Effect of elevated CO2 level (EC) was studied on the tolerance
of cereals to elevated temperature and drought and
on the resistance of wheat to fungal diseases. In general,
elevated growth temperature did not affect final grain
size, thus having less harmful effects than heat stress or
drought during grain-filling. The plants subjected to low
water supply levels or elevated temperature had higher
biomass and grain yield at EC than at the ambient level.
Susceptible wheat varieties were, however, usually more
prone to diseases when grown at EC, while resistant
varieties remained resistant even at EC
