| Abstract: | Six different levels of vigour of sorghum seeds from an identicallot were obtained through accelerated aging for various periodsof time. Vigour was estimated according to yielding abilityof the seed in the field. After 6 d of aging, seed invigoration,to the extent of a 20% increase in yield, was observed. However,this was followed by a gradual decrease in yield following agingof up to 48 d. All seed lots showed 88–92% germinationor emergence capacity when tested in the laboratory, which correlatespoorly with vigour. However, vigour correlated well with therates of germination and root emergence when tested in the laboratory,as well as with emergence rate in the field. |
