“…Although pigeon pea is considered to be recalcitrant crop, plant regeneration has been reported but only a few protocols could be successfully utilized for genetic transformations (Geetha et al, 1999). Recent improvements on genetic transformation (Lawrence and Koundal, 2001;Satyavathi et al, 2003;Dayal et al, 2003;Thu et al, 2003;Mohan and Krishnamurthy, 2003;Prasad et al, 2004) have demonstrated that the crop is not as recalcitrant as assumed earlier; however, limited to cultivars and some genotypes.…”