Genotypic variation in biochemical compounds of the Sri Lankan tea (Camellia sinensis L.) accessions and their relationships to quality and biotic stresses
| Autor: | J. Dananjaya Kottawa-Arachchi, P. A. Nimal Punyasiri, M. T. Kumudini Gunasekare, Brasathe Jeganathan, B. M. Ratnayake Bandara, I. Sarath B. Abeysinghe, M. A. B. Ranatunga |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Germplasm 010401 analytical chemistry food and beverages Horticulture Plant disease resistance Biology Epigallocatechin gallate 01 natural sciences complex mixtures 0104 chemical sciences chemistry.chemical_compound Epicatechin gallate chemistry Polyphenol Botany Genetics medicine Camellia sinensis Food science Gallic acid Theobromine 010606 plant biology & botany medicine.drug |
| DOI: | 10.6084/m9.figshare.4750972 |
| Popis: | Tea (Camellia sinensis L.) is well known for its biochemical constituents that define the product quality and confer pest and disease resistance. Seven major metabolites – epicatechin (EC), epicatechin gallate (ECg), epigallocatechin (EGC), epigallocatechin gallate (EGCg), caffeine, theobromine, and gallic acid – of 87 beverage type and six non-beverage type tea accessions from Sri Lankan tea germplasm were profiled using HPLC and LC-MS/MS. All seven metabolites varied widely in the beverage type accessions. The non-beverage types only contained gallic acid and epicatechin. Results prove the presence of high EC and ECg contents in green leaves to be a reliable marker for identifying high-quality black tea-producing accessions. High EC and low EGCg contents in green tea leaves appear to enhance traits of resistance to blister blight disease. Significant variations detected in theobromine, caffeine, and total polyphenol content define the affinity of germplasm to the main three tea taxa, and we conclude that C. sinensis ssp. lasiocalyx predominates the Sri Lankan germplasm collection. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|