Plant densities and harvesting times on productive and physiological aspects of Stevia rebaudiana Bertoni grown in southern Brazil
| Autor: | Diego Moterle, Luiz Alberto Kanis, Cícero Deschamps, Henrique Soares Koehler, Erik Nunes Gomes, Luiz Antonio Biasi |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Biomass diterpene glycosides 01 natural sciences natural sweetener Glucosides Yield (wine) Stevia Stevioside lcsh:Science Multidisciplinary biology fungi Plant density stevioside food and beverages Sowing Agriculture 04 agricultural and veterinary sciences biology.organism_classification Plant Leaves Horticulture Stevia rebaudiana rebaudioside A 040103 agronomy & agriculture 0401 agriculture forestry and fisheries lcsh:Q Seasons Diterpenes Kaurane Rebaudioside A Brazil 010606 plant biology & botany |
| Zdroj: | Anais da Academia Brasileira de Ciências v.90 n.4 2018 Anais da Academia Brasileira de Ciências Academia Brasileira de Ciências (ABC) instacron:ABC Anais da Academia Brasileira de Ciências, Volume: 90, Issue: 4, Pages: 3249-3264, Published: DEC 2018 Anais da Academia Brasileira de Ciências, Vol 90, Iss 4, Pp 3249-3264 |
| ISSN: | 1678-2690 0001-3765 |
| Popis: | Stevia (stevia rebaudiana Bertoni) is a species characterized by producing non-caloric substances with high sweetening potential. Among these substances, rebaudioside A and stevioside are produced in greater quantity. Plant density and harvesting time are factors that affects biomass and sweetening compounds yield in this species. The objective of this research was to evaluate the effect of plant densities and harvesting times on the productive and physiological characteristics of stevia in southern Brazil. The experimental design was in randomized blocks, in a split-plot scheme, with 9 treatments comparing the effect of three planting densities (166 667, 83 333 and 33 333 plants ha-1) in the plots and three harvesting periods (before, in the beginning and in full flowering) in the subplots. Harvesting at the beginning of flowering promoted higher dry leaf biomass yield and, when associated with the lowest planting density, promoted higher levels of rebaudioside A and stevioside. The lowest planting density resulted in greater leaves biomass accumulation, whereas the highest density promoted higher yields per area. Interaction between density of 166 667 plants ha-1 and the harvest at the onset of flowering promoted higher yields of rebaudioside A (43.22 kg ha-1) as well as higher rebaudioside A/stevioside ratio (0.60). |
| Databáze: | OpenAIRE |
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