Effect of Temperature and Photoperiod on Germination and Survival of Sand Bluestem

Abstract

Results obtained from studies with controlled environments gave an indication of responses of G-1773 sand bluestem (Andropogon hallii Hack.) germinating caryopses and seedlings to several different temperature and photoperiod combinations. Germination was favored by relatively high alternating temperatures and was not affected by absence of light. Survival of this accession was affected by both photoperiod and temperature. Survival was favored by 12-hour photoperiods and was inversely related to increasing temperature. These data indicate that this accession of sand bluestem may respond more favorably to fall seeding than to spring seeding.