In some instances it may be possible to use unbudded trees originated from nucellar embryos.
S. Moreira, A. S. Costa, T. J. Grant 1954, 'Métodos para identificação e controle da tristeza dos citros Methods of identificationand control of tristeza disease of citrus', Bragantiahttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051954000100019. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)