Volume: 45 Issue: 2
Registration of a high-yielding, high citronellol: geraniol ratio and unique sesquiterpene (6, 9- guaiadiene)-rich variety CIM-Bharat of rose scented geranium (Pelargonium graveolens L.)
Year: 2023, Page: 62-69, Doi: https://doi.org/10.62029/jmaps.v45i2.tiwari
Received: Feb. 4, 2023 Accepted: June 8, 2023 Published: Oct. 27, 2023
Rose scented geranium, a South-African aromatic herb, is cultivated in both sub-tropical and temperate countries for its essential oil derived from the aerial parts that conveys a strong rosy-minty odour with a greenishyellow colour. The oil is a treasure trove of versatile chemicals with extensive applications in the high grade perfumery, pharmaceutical, and aroma industries. The annual rise in its essential oil import for indegenic consumption in the country warrants its genetic enhancement of existing germplasm for increasing per unit area productivity and quality of essential oil. With this backup, our team initiated a clonal selection scheme to develop a genetically improved clone, CIMAP-21A, capable of producing 70-80kg/ha of oil yield in a single harvest compared to other existing cultivars and check variety CIM-Pawan. The new developed variety also has unique chemical compositions to meet the quality standard of the perfumery industry. It has a high Citronellol: Geraniol (C: G) ratio (>3) with the presence and absence of unique sesquiterpene markers i.e., 6,9-guaiadiene (5.4%) and 10-epi-γ-eudesmol, respectively. The unique sturdy dark green stem and leaves are the distinguished morphological features of this strain. The developed clone is ideally suitable for cultivation in the entire North India and Western regions of the country. This strain has now been christened as CIM-Bharat and it is registered here as a new, improved variety of rose-scented geranium for its commercial release.
Keywords: CIM-Bharat, Citronellol : Geraniol ratio, GC-MS, Molecular fingerprint, Pelargonium graveolens, Rose-scented Geranium
Jain, N., Aggarwal, K. K., Syamasundar, K. V., Srivastava, S. K., & Kumar, S. (2001). Essential oil composition of geranium (Pelargonium sp.) from the plains of Northern India. Flavour and Fragrance Journal, 16, 44–46.
Saxena, G., Rahman, L. U., Verma, P. C., Banerjee, S., & Kumar, S. (2008). Field performance of some clones of rose-scented geranium (Pelargonium graveolens L’Her Ex Ait.) for evaluation of their essential oil yield and composition. Industrial Crops and Products, 27, 86–90.
Singh, V. R., Verma, R. S., Upadhyay, R. K., Lal, R. K., Padalia, R. C., Chanotiya, C. S., & Nilofer. (2018). Stable variety selection over locations and recommendations for rose-scented geranium (Pelargonium graveolens L’ Herit. ex Aiton.). Journal of Essential Oil Research, 30, 32–39.
Verma, R. S., Rahman, L. U., Verma, R. K., Chauhan, A., & Singh, A. (2013). Essential oil composition of Pelargonium graveolens L’Her ex Ait. cultivars harvested in different seasons. Journal of Essential Oil Research, 25, 372–379.
© CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow-226015
Tiwari, G., Verma, R. K., Gupta, A. K., Kalra, A., Verma, R. S., Kumar, S., Nannware, A. D., Tandon, S., Rahman, L., Semwal, M., Lothe, N. B., Chaturvedi, T., Singh, S., Singh, R., Singh, A., Kumar, R., Kumar, A., & Chauhan, A. (2023). Registration of a high-yielding, high citronellol: geraniol ratio and unique sesquiterpene (6, 9- guaiadiene)-rich variety ‘CIM-Bharat’ of rose scented geranium (Pelargonium graveolens L.). Journal of Medicinal and Aromatic Plant Sciences, 45(2), 62–69.
