SEED GERMINATION AND SEEDLING EMERGENCE OF Sorghum alepenseL IN RELATION TO THE POSITION OF DEVELOPMENT SEEDS ON INFLORESENCE AND TIME OF SEED MATURITY

Abstract

Pots experiment was carried out at the College of Agric & Forestry , Mosul University in summer growing season of 2003 to determine the percentage of germination and seedling emergence for Sorghum halepense L seed which developed from different positions on infloresence of mother plant in relating to different time of seed maturity . Data was subjected to the convertional analysis of complete Randomized Design ( C.R.D ) as a factorial experiment . Result indicated that the germination percentage had significantly reduced 60.1 % when the seeds matured at october comparing with the seed maturity at july . On other hand , Seed that had been taken from lower part of infloresence had less variability or less percentage of germination than those taken from upper part of infloresence . Dry weight of emergering seedling also reduced up to 35.7 % when it was collected at september than at August , while 18.6 had reduced in dry weight from the seeds had matured from the lower part of mother infloresence .