Genetic diversity, essential oil composition, and in vitro antioxidant and antimicrobial activity of Curcuma longa L. germplasm collections

Publication date: Available online 18 July 2018Source: Journal of Applied Research on Medicinal and Aromatic PlantsAuthor(s): Ritu Mishra, Anil K. Gupta, Ajay Kumar, Raj K. Lal, D. Saikia, Chandan S. ChanotiyaAbstractGenetic divergence was estimated among sixty-five genotypes of turmeric (Curcuma longa L.) using Mahalanobis D2-statistics on thirteen agro-morphological quantitative traits. The genotypes were grouped into nine clusters. Cluster I had maximum number of genotypes (19) followed by cluster II (13), III (11), IV (5), V (4), VI (4), VII (4), VIII (3) and IX (2) in order. The genotypes which belongs to cluster VII had the maximum divergence (250.62), followed by cluster IX (244.61) and cluster VI (240.40). The highest inter-cluster distances were observed between cluster IX (1871.46) and cluster VIII (1296.51), suggesting that the genotypes included in these clusters may be used for future breeding programme. Traits like fresh weight of rhizome, dry weight of rhizome were the major contributors to the genetic divergence. The chemical composition of essential oils from eight selected genotypes of Curcuma longa L. was studied and identified by gas chromatography–mass spectrometry (GC/MS). The compounds cis-sesquisabinene hydrate (3.4%), curzerenone (0.6%), β-bisabolol (2.2%), and farnesol (1.2%) were found only in CIM Pitamber variety. The total percentage of compounds identified from the essential oil of Curcuma longa leaves was maximum in CIM Pitamber (98.1%) fol...
Source: Journal of Applied Research on Medicinal and Aromatic Plants - Category: Complementary Medicine Source Type: research