Effect of pruning in biomass production and steviol glycosides contents of Stevia rebaudiana Bertoni var. Morita II
Journal Title: Biotecnología Vegetal - Year 2019, Vol 19, Issue 3
Abstract
For the production of dry leaf of Stevia rebaudiana Bertoni under the Cuban climatic conditions, it is necessary to identify the agrotechnical variables with the greatest impact on its yield. Therefore, the objective of this work was to determine the effect of pruning frequency on biomass production and steviolglycoside content. Plants of S. rebaudiana var. Morita II grown for 180 days in the stonecutter were employed. Three pruning frequencies were tested: every 30, 60 and 90 days. As a control, plants without pruning were used. The variables evaluated were the height of the plant, the number of branches per plant, the number of leaves per plant, the fresh and dry mass of the leaves and stems per plant and the percentage of flowering. In addition, the yield of dry mass per hectare was estimated and the content of steviolglycoside was determined. The results revealed that the best pruning frequency of S. rebaudiana plants was every 60 days. The results of the agronomic variables evaluated were higher than those obtained with pruning every 30 and 90 days, with the exception of the height of the plant and the percentage of flowering. With pruning every 60 days the yield was 1.19 t ha-1 and the steviolglycoside content reached 255.39 mg g-1 of dry mass. The results showed that the pruning frequency influences the production of biomass and the main components of the biomass yield, as well as the content of steviolglycosides in clarified aqueous extracts of S. rebaudiana var. Morita II grown under conditions of stonecutter.
Authors and Affiliations
Marielys González, Marcos Daquinta, Danilo Pina, Nayansi Portal, Osbel Mosqueda, Ivan Andújar, Luzgrey González, Susett González, Lianny Pérez, Yarianne Lezcano, Oscar Concepción, Maritza Escalona
Keywords
Related Articles
- EP ID EP698036
- DOI -
- Views 76
- Downloads 0
Germination of somatic embryos of Psidium guajava L. cv. Cuban Red Dwarf EEA 18-40 in temporary immersion systems
Somatic embryo germination of Psidium guajava L. cv. Cuban Red Dwarf EEA 18-40 in temporary immersion systems (TIS), in which somatic embryos were cultured in the heart-torpedo stage in MS mediun at mayor half strength...
Ef fect of the inoculation of phospha te solubilizing microorganisms and arbuscular mycorrhizal fungi in Eugenia dysenterica plants grown on different substrates
Phosphate solubilizing microorganisms (PSM) and arbuscular mycorrhizal fungi (AMF) represent alternative strategies to reduce the cost and increase the production of cagaita (Eugenia dysenterica) seedlings associated wit...
Methodological procedure to calculate the work norms for the laminar flow hood operators in the mass propagation of in vitro plants
The achievement of productive goals in plant mass propagation with the efficiency and efficacy demanded from market competence of in vitro plants nowadays has an unstopped increase of workers productivity, mainly the l...
Study on the effectiveness of RIZOBAC in the process of calllogenesis in potato var. Desiree
This experiment was carried out in a plant biotechnology laboratory at Havana Agronomy University (UNAH), evaluating the effects of different concentrations of bacterial preparations (RIZOBAC) on the obtention of fresh m...
Micropropagation of the Cuban Papaya Hybrid IBP 42-99
This work consisted of developing a methodology to propagate papaya hybrids through in vitro culture. As plant material, lateral buds of plants of the hybrid IBP 42-99 were used. The explants were established following t...