Basically it is the case of optimization. Generally selection of agrobacterium strain depend upon the crop or plant material and the way you want to give infections for example floral dip for Arabidopsis performed by GV3101 strain, Leaf disc infection of N. tabaccum performed by LBA4404 and De-embryonated cotyledon (DEC) of groundnut and callus transformation of rice performed by EHA105. However you can get transformants from any of above mentioned strain but for Indian rice varieties, you may get optimum transformation efficiency from EHA105.