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.
Highlights
Kalanchoe Adans. is one of the three most important medicinal genera of the Crassulaceae family and comprises about 125 species, such as Kalanchoe brasiliensis Camb., which is native of Brazil, and Kalanchoe pinnata (Lamk.) Pers., which is native of Madagascar (Costa et al 2008)
Through the data of vegetative growth of both species, it was observed that plots of K. pinnata showed a significantly greater plant height, total length of sprouts and stems, production and dry matter content of leaves than the plots of K. brasiliensis, which reached higher averages only for the length of lateral branches (Table II)
Unfolding the factorial design and analyzing the treatments within each species, it was found a greater influence of the temperature in K. pinnata, which showed lower heights in this treatment
Summary
Kalanchoe Adans. is one of the three most important medicinal genera of the Crassulaceae family and comprises about 125 species, such as Kalanchoe brasiliensis Camb., which is native of Brazil, and Kalanchoe pinnata (Lamk.) Pers., which is native of Madagascar (Costa et al 2008). Is one of the three most important medicinal genera of the Crassulaceae family and comprises about 125 species, such as Kalanchoe brasiliensis Camb., which is native of Brazil, and Kalanchoe pinnata (Lamk.) Pers., which is native of Madagascar (Costa et al 2008). (2005) mentioned the following activities identified in preclinical tests in vivo and/or in vitro for both species: analgesic, anti-inflammatory, antileishmaniasis, antimalarial, antimicrobial, antipyretic, antitumor, anti-ulcer, uterine contraction inhibitor, hepatoprotective, immunosuppressive and pesticide. Several characteristics, such as plant form, physiology and resource allocation, vary according to the irradiance level to which the plants are acclimated and/or ecologically restricted (Givnish 1988). Changes in light levels to which a species is adapted may result in different physiological responses in its biochemical, anatomical and growth characteristics (Atroch et al 2001)
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