Productive and qualitative parameters of four Physalis species cultivated under colored shade nets

Abstract

The genus Physalis L. has great importance in the framework of Brazilian biodiversity especially in the Amazon region. The use of colored shading nets allow manipulating the light spectrum, and thus supplying the appropriate quantity and quality of light for each species and maximizing production. The purpose of this study was to evaluate the effects of shade nets on fruit production and qualitative parameters of four species belonging to genus Physalis. The experimental design was random blocks with a 4 x 5 factorial scheme, four species of Physalis (P. peruviana, P. pubescens, P. minima and P. ixocarpa) and four colors of shade nets (white, blue, red and black), besides the control treatment under full sun exposure. Fruits were collected weekly and evaluated for longitudinal and transversal diameter and biomass with and without a calyx. Finally the percentage of calyx biomass compared to the total fruit biomass, number of fruits per plant and production were determined. A differentiated response was found among the species regarding the coloring of the converter shade nets. Plants of P. peruviana had the best productive and qualitative parameters of fruits when cultivated in full sunlight or under white shade nets, P. pubescens and P. minima when cultivated in full sunlight or under white and blue shade nets, and P. ixocarpa under red or black shade nets.

Physalis development according to the growing season in the semi-arid region of the Bahia state, Brazil

“…Length (L), diameter (D) and total soluble solids content (TSSC) at five maturation stages of the 'purple' and 'green' varieties of Physalis ixocarpa fruits produced in two seasons: from May to August 2017 (season 1) and from August to November 2017 (season 2). Dec. 2018et al (2011) andRamos-Lopez et al (2017), and were higher than the values observed bySilva et al (2018) for crops in southeastern Brazil.…”

Emergência e desenvolvimento de mudas de fisális sob telas de sombreamento coloridas e pleno sol

“…O incremento na produção de BSMF pode estar relacionado a boa relação vermelho/vermelho distante das telas. Plantas heliófilas por serem plantas que apresentam bom desenvolvimento em ambientes com bastante iluminação utilizam com eficácia as altas intensidades luminosas, devido à alta capacidade de transporte de elétrons, gerando assim maiores ganhos fotossintéticos (SILVA et al 2018).…”

Divergência genética em espécies e híbridos interespecíficos de Physalis baseada em caracteres morfoagronômicos

“…A grande diversidade genética entre as espécies de Physalis garante a umas características peculiares de interesse econômico, como por exemplo coloração e presença de compostos bioativos. Apesar do conhecimento dessas características e do consumo de Physalis há muito tempo em alguns países como México e Colômbia, pouco se tem feito para o melhoramento genético desta frutífera (Silva et al, 2018;Suescún et al, 2011). Adicionalmente na maioria dos locais onde é consumida ainda são plantadas as espécies locais, com variação entre as plantas, predominando o cultivo de P. peruviana (Samuels, 2015).…”