2014 Volume 42 Issue 2 Pages 126-129
Annual bluegrass was regenerated from a segment with an inflorescence node at high rate (over 90%). And this phenomenon was observed in populations from putting green and orchard, suggesting that regeneration from a segment with an inflorescence node is reproduction style common to this weed. Regenerated plants derived from the node showed higher tolerance to heat and drought stress as compared to that of the plants derived from seeds. In conversely, the plant derived from seeds showed higher tolerance to freeze rather than the plant derived from nodes. These results indicate that segments having inflorescence nodes detached from mother plants caused by clipping may act as an important tool for canceling a summer stress as well as reproduction.