Morphological Characteristics of Annual Bluegrass (Poa annua L.) Inflorescence Derived from a Putting Green

Abstract

Annual bluegrass derived from a putting green (GR) and an orchard (OR) were grown in a glasshouse and compared their morphologies. As a result, the values of plant length, inflorescence length, the number of primary branches/inflorescence, and the number of spikelets/inflorescence of GR were less than those of OR, while the number of florets/spikelet of GR was greater than that of OR. These results suggest that in putting green where annual bluegrass is subjected to excessive mowing and traffic, annual bluegrass may obtain high adaptability by increasing the number of florets/spikelet and downsizing the propagule and inflorescence.