Factors Enhancing Germination of Phalaris minor Seeds Obtained from Three Provinces of Iran

Unsatisfactory germination of annual canary grass (phalaris minor) is contributed to seed dormancy. factors affecting the breaking of seed dormancy were investigated to evaluate their effects on the germination of seed samples collected from three different provinces of iran. results indicated that the percentage of germination and radicle growth rate of seed samples varied significantly. treating seeds with sulphuric acid, pre-chilling seeds prior to incubation, and placing seeds on filter paper moistened with gibberellic acid at 100 ppm during incubation, all significantly enhanced the germination percentage of the seed samples. applying a combination of these factors resulted in 90 to 98% seed germination and significant radicle elongation. consecutive freezing and thawing of annual canary grass seed usually had no effect on enhancing seed germination in this weed.