Isolated polynucleotides and polypeptides and methods of using same for increasing plant utility

A method of increasing yield, growth rate, biomass, vigor, abiotic stress tolerance and/or nitrogen use efficiency of a plant and/or reducing time to inflorescence emergence and/or time to flowering of a plant, comprising transforming a plant with a heterologous polynucleotide encoding a polypeptide comprising an amino acid sequence having at least 95% amino acid sequence identity to the amino acid sequence as set forth in SEQ ID NO:

• 96, and wherein expression of said polypeptide in said transformed plant results in said increase in yield, growth rate, biomass, vigor, abiotic stress tolerance and/or nitrogen use efficiency, and/or said reduction in time to inflorescence emergence and/or to flowering in said transformed plant as compared to a control plant of the same species lacking said heterologous polynucleotide and grown under same growth conditions.