USHA, T JANAKIRAM, K V PRASAD, CHARANJIT KAUR, P SRINIVASAN, and C TARA SATYAVATHI. 2014. “Influence of Different Carbon Sources on in Vitro Induction of Anthocyanin Pigments in Callus Cultures of Petunia (Petunia Hybrida)”. The Indian Journal of Agricultural Sciences 84 (8): 957–61. https://doi.org/10.56093/ijas.v84i8.43085.