Drought injury in wheat ears

摘要

Death of some upper spikelets in ears of autumn-sown wheat under semi-drought conditions was attributed to moisture stress. It appears that the damage was produced by a few hours of stress 4 or 5 days before ear emergence. Among 80 medium- or late-maturing cultivars a third showed slight or moderate damage, and of those exposed to moisture stress at the critical stage of development, 9 were classed as resistant to drought injury and 17 as susceptible.