Assessment of Genetic Diversity, Micromorphology and Antimicrobial Activity in Nepeta cataria L.

Author:

Tiwari Gunjan12ORCID,Chaturvedi Trishna12,Kumar Gupta Anil12,Kishori Lal Raj1,Swaroop Verma Ram23,Kumar Srivastava Ramesh24,Singh Pooja5,Gangwar Bhavana26,Darokar M. P.6,Singh Dhawan Sunita25

Affiliation:

1. Division of Plant Breeding and Genetic Resource Conservation CSIR – Central Institute of Medicinal and Aromatic Plants P.O. CIMAP 226015 Lucknow Uttar Pradesh India

2. Academy of Scientific and Innovative Research (AcSIR) Ghaziabad, UttarPradesh India

3. Phytochemistry Division CSIR – Central Institute of Medicinal and Aromatic Plants P.O. CIMAP 226015 Lucknow Uttar Pradesh India

4. Technology and Business Development Division CSIR – Central Institute of Medicinal and Aromatic Plants P.O. CIMAP 226015 Lucknow Uttar Pradesh India

5. Biotechnology Division CSIR – Central Institute of Medicinal and Aromatic Plants P.O. CIMAP 226015 Lucknow Uttar Pradesh India

6. Department of Bio-prospection and Product Development CSIR – Central Institute of Medicinal and Aromatic Plants P.O. CIMAP 226015 Lucknow Uttar Pradesh India

Abstract

AbstractThe mosquito repellent Nepetalactone rich Nepeta cataria L. (catmint) plant has a variety of therapeutic and industrial potential. Reports on the genetic diversity of N. cataria germplasm are minimal globally and need attention for adding a new variety into commercial cultivation. The present study, therefore, assessed the genetic diversity among thirteen half‐sib genotypes of N. cataria using agro economic and phytochemical traits. The experimental set has shown substantial variation for agro economic traits studied. Among all the studied populations, fresh herb‐based essential oil content ranged from 0.1 % to 0.3 %, with a grand mean of 1.67 %. However, the estimated oil yield ranged from 44.4 kg/h to 120.73 kg/h with an average of 71.34 kg/h. Among the eleven phytochemical constituents detected in different concentrations in the essential oil of experimental sets, 4aα,7α,7aα‐Nepetalactone (67.9–87.5 %) constituted the significant proportion of essential oil. Altogether, based on mean comparison, the population NC8 was found to be promising for estimated oil yield and 4aα,7α,7aα‐Nepetalactone content. The greater heritability estimates (h2bs) and genetic advance as percent of mean (GAM) were observed for important economic parameters, i. e., oil content, herb yield, and oil yield. The cluster analysis revealed the least interactions between various agro economic and phytochemical variables. The microscopic study of trichome showed a positive correlation of abaxial leaf surface with essential oil content. The promising antimicrobial potential of catmint oil was also observed against human health‐related pathogens. The results infer from our study provide valuable insight for genetic improvement and product development in the catmint germplasm.

Publisher

Wiley

Subject

Molecular Biology,Molecular Medicine,General Chemistry,Biochemistry,General Medicine,Bioengineering

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