Chemical and agronomic development of Kalanchoe brasiliensis Camb. and Kalanchoe pinnata (Lamk.) Pers under light and temperature levels

Abstract

This study compares the development of Kalanchoe brasiliensis and Kalanchoe pinnata, which are medicinal species known as "saião" and "folha da fortuna" that are used interchangeably by the population for medicinal purposes. The experiment consisted of 20 plots/species planted in plastic bags with homogeneous substrate in a randomized design, which grown under light levels (25%, 50%, 70%, full sunlight) at environment temperature, and a treatment under a plastic with greater temperature range than the external environment. It was obtained for K. pinnata a greater plant height, total length of sprouts, stems, production and dry matter content of leaves than that obtained for K. brasiliensis, which achieved higher averages only for the length of lateral branches. The species showed increases in height, which varied in inverse proportion to the light, and it was observed the influence of temperature in K. pinnata. The production and dry matter content of leaves were proportional to the luminosity; the same occurred in the thickness of leaves for K. brasiliensis. In the swelling index and Brix degree, K. brasiliensis showed higher averages than K. pinnata. In relation to the total content of flavonoids it was not observed significant differences for both species. The analyzed parameters showed the main differences in the agronomic development of the two species.

Increased Antioxidant Activity and Changes in Phenolic Profile of Kalanchoe pinnata (Lamarck) Persoon (Crassulaceae) Specimens Grown Under Supplemental Blue Light

“…K. pinnata is rich in phenolic compounds, which account for some of these biological activities (25). The composition of phenolics can vary according to light conditions (33)(34)(35)(36).…”

Bioactive Compounds from Kalanchoe Genus Potentially Useful for the Development of New Drugs

“…Plants of these genus also require low agricultural input for their cultivation, needing neither a specific type of soil nor high water availability [ 132 ]. In addition, as succulents, Kalanchoe plants are able to survive for long periods under environmental stresses, by accumulating water in their leaves and by producing secondary metabolites that contribute as antioxidants, radiation-protectors, and/or light-catchers [ 20 , 132 , 133 , 134 , 135 ].…”

Como Os Atributos Térmicos Foliares De Árvores Na Transição Amazônia-Cerrado Variam Entre Os Níveis Organizacionais?

“…BANERJEE, 2011;HARLALKA;PATIL;PATIL, 2007;JAIN et al, 2010). Gupta e Banerjee Diversas substâncias, tais como flavonoides (livres e glicosilados), saponinas e alcaloides, já foram identificadas em B. pinnatum e apresentaram potenciais farmacológicos (CRUZ et al, 2011;JOSIAH, 2006). Muzitano et al (2011) demonstraram que o conteúdo flavonoídico é potencializado quando a planta é mantida sobre maior exposição à luz solar.…”