Rhizome essential oil of Curcuma caesia has myriad of therapeutic activities which is being practiced since ages as folklore remedy but commercially remained underutilized till date. Though previous reports had characterized the phytoconstituents of C. caesia essential oil, a comparative assessment will lead to identify a good germplasm for commercialization. Quality germplasm should have high yield and quality constituents. Hence, the current study deals with intraspecific variability of C. caesia rhizome essential oil associated with two geographical regions, i.e., Odisha and West Bengal. The Principal Component Analysis and Agglomerative Hierarchical Clustering analysis distinguished two groups of essential oils on the basis of the phytoconstituents. The highest oil yield was found in Mayurbhanj (0.64 ± 0.015% w/w) population, whereas the lowest oil yield was in South 24-Parganas population (0.39 ± 0.01% w/w). The chemical constituents of C. caesia were analyzed by Gas Chromatography–Mass Spectrometry which detected a total of 34 compounds accounting to 90.08–97.94% of the total oil. Oxygenated monoterpenes constituted the major fraction followed by oxygenated sesquiterpenes. West Bengal accessions were dominated by oxygenated monoterpenes (34.8–45.41%) followed by oxygenated sesquiterpenes (26.63–38.06%). However, Odisha accessions were rich in oxygenated monoterpenes (37.6–54.36%) followed by sesquiterpene hydrocarbons (21.9–33.8%). In this study, phytochemical variability in C. caesia associated with geographical distribution patterns has been successfully studied in respect of essential oil yield and quality.

莪术的根茎精油具有无数的治疗活性，自从很久以来就已作为民间文学艺术的疗法进行实践，但是直到今天，商业上仍未充分利用。虽然以前的报告所特有的phytoconstituents C. caesia精油，进行比较评估将导致以确定商业化了良好的种质资源。优质种质应具有高产和优质成分。因此，当前的研究涉及凯撒梭菌的种内变异性与两个地理区域，即奥里萨邦和西孟加拉邦有关的根茎精油。主成分分析和聚集层次聚类分析在植物成分的基础上区分了两组精油。在Mayurbhanj（0.64±0.015％w / w）人口中发现最高的石油产量，而在South 24-Parganas人口中（0.39±0.01％w / w）则发现最低的石油产量。凯撒衣藻的化学成分通过气相色谱-质谱法进行了分析，共检测到34种化合物，占总油的90.08-97.94％。氧化的单萜构成主要部分，其次是氧化的倍半萜。西孟加拉邦的种质以含氧单萜（34.8–45.41％）为主，其次是含氧倍半萜（26.63–38.06％）。然而，奥里萨邦种质富含氧化的单萜（37.6–54.36％），其次是倍半萜碳氢化合物（21.9–33.8％）。在这项研究中，已经成功地研究了精油产量和品质方面与地域分布模式相关的凯撒小球藻的植物化学变异性。