Germination of cereus jamacaru dc. Subsp. Jamacaru from four areas of curimataú oriental paraíbano subjected to different temperatures

• Autor(a) principal: Jerônimo, Rayane Ellen de Oliveira
• Data de Publicação: 2024
• Outros Autores: Nero, Joana D’Arck Pê de, Martins, Vinicius Alves, Cabral, Elyan Figueiredo da Silva, Azêredo, Gilvaneide Alves de, Souza, Vênia Camelo de
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista JRG de Estudos Acadêmicos
• Texto Completo: http://revistajrg.com/index.php/jrg/article/view/937
• topic: Caatinga; Cactaceae; Ecologia; Semiárido; Vigor de sementes; Caatinga; Cactaceae; Ecology; Semiard; Seed vigor

Cereus jamacaru DC. subsp. jamacaru, belonging to the Cactaceae family and endemic to Brazil, is predominantly found in the Northeast region. It is a species that thrives in areas with dry climates and shallow soils, exhibiting robust growth within temperatures ranging between 20°C and 30°C. This study aimed to investigate the germination potential of mandacaru seeds from four areas within the Curimataú Oriental in the municipality of Solânea-PB, subjected to two temperatures, constituting a 4 x 2 factorial design. The germination test was conducted with 4 replicates of 50 seeds, using "blotting paper" as the substrate, totaling 200 seeds per treatment, at temperatures of 25°C and 30°C, designed in a completely randomized design. The variables analyzed were germination, germination speed index (GSI), and mean germination time (MGT). Germination was not influenced by temperatures; however, the GSI and MGT stood out at 30°C. Concerning the areas, seeds from the Salgado area exhibited higher germination averages, while Varjota and Palma showed higher GSI and MGT, respectively. C. jamacaru seeds from the Curimataú Paraibano region in Solânea presented significant differences in germination among the studied areas, with Salgado area recording the highest mean (97%). Cereus jamacaru DC. subsp. jamacaru at 30°C displayed increased vigor concerning GSI, especially in the Varjota area. In the Palma area, the seeds exhibited a shorter mean germination time (4.01 days) at 30°C.