Vol. 10, Special Issue 10 (2021)

Author(s):
M Gohilapriya, J Auxcilia, MS Aneesa Rani and K Hemaprabha

Abstract:
Carica papaya Linn. belongs to the family Caricaceae, which is commonly known as melon tree. Papaya Ring Spot Virus (PRSV), a major devastating disease of papaya causing a yield loss up to 100%. All the commercial varieties of papaya are susceptible to this disease. However, the wild genus viz., Vasconcella cauliflora and Vasconcella candamarcencis are reported to be resistant to PRSV. Hence, this study was formulated to profile the phytoconstituents in cultivated varieties in comparison with resistant genotypes, so that the compounds contributing resistance to PRSV could be identified. The GCMS analysis revealed that a total of 114 bioactive constituents present in varieties viz. CO 7 (22), TNAU papaya CO 8 (20) and wild genus viz., Vasconcellea cauliflora (36) and Vasconcellea candamarcensis (36).The wild genus possessed (22 compounds) in V. cauliflora and (18 compounds) in V. candamarcensis as extraneous compounds when compared to the cultivated varieties.Among the phytoconstituents, the compounds namely 9, 12-Octadecadienoic acid (Z, Z)-, Octadecanoic acid, Dodecanoic acid, and squalene were reported to have the properties against plant viral diseases.