Selectable marker independent transformation of recalcitrant maize inbred B73 and sorghum P898012 mediated by morphogenic regulators BABY BOOM and WUSCHEL2

Key message Discriminatory co-expression of maize BBM and WUS transcriptional factor genes promoted somatic embryogenesis and efficient Agrobacterium -mediated transformation of recalcitrant maize inbred B73 and sorghum P898012 genotypes without use of a selectable marker gene.