https://ri.ufs.br/jspui/handle/riufs/2515 2026-09-30T02:13:20Z https://ri.ufs.br/jspui/handle/riufs/26118 Título: Uso do bioestimulante 'Adubo Sertanejo' como promotor de germinação em Passiflora cincinnata Autor(es): Aragão, Luana Paes Abstract: The wild passion fruit (Passiflora cincinnata Mast.) is a species native to the Caatinga, resistant to pests and drought. Seedling production depends on the optimization of germination, which is limited by seed dormancy. This study aimed to evaluate the bio-stimulant ‘Adubo Sertanejo’ as a promoter of germination in Passiflora cincinnata. The experiment was conducted at the UFS Campus Sertão laboratory, in a 2×5 split-plot design, with light conditions as the main plots and bio-stimulant doses as the subplots. Seed viability was evaluated using the tetrazolium test, followed by the germination test. The evaluated variables were: germination percentage (G%), first germination count (FGC), germination speed index (GSI), hard seeds (HS), and dead seeds (DS). The tetrazolium test confirmed that the seeds were viable; however, no germination was 6 observed during the evaluated period, indicating that dormancy was not overcome by the biostimulant. The seeds that were not deteriorated after the germination test were subjected again to the tetrazolium test, which showed that the seeds were alive. It is concluded that, under the experimental conditions adopted, the bio-stimulant ‘Adubo Sertanejo’ was not efficient in overcoming the dormancy of Passiflora cincinnata seeds. 2026-02-20T00:00:00Z https://ri.ufs.br/jspui/handle/riufs/26098 Título: Estimativa de porcentagem de matéria seca de gramíneas por meio de imagens multiespectrais Autor(es): Menezes, Adrielly de Andrade 2026-02-20T00:00:00Z https://ri.ufs.br/jspui/handle/riufs/26076 Título: Mapeamento da responsividade ao uso do nitrogênio por meio de imagens na cultura do milho Autor(es): Barreto, Mario Sergio Rodrigues Abstract: High-throughput phenotyping (HTP) is a strategic tool for maize breeding, enabling rapid and accurate evaluation of agronomic traits. This study aimed to select RGB image–based vegetation indices for identifying productive maize genotypes under distinct nitrogen fertilization conditions at the plot level. Thirty-five maize genotypes were evaluated in a randomized complete block design arranged in a split-plot scheme with three replications, subjected to two nitrogen levels (20 kg ha⁻¹ and 160 kg ha⁻¹). Four UAV flights were conducted at two altitudes (60 m and 80 m), and mixed models (REML/BLUP) were used for genetic and spatial analyses. The results showed that the flight performed at 61 days after planting (V7/V8) at an altitude of 60 m presented the highest repeatability and accuracy. The BGI (Blue Green Pigment Index) vegetation index showed high sensitivity in discriminating against nitrogen levels and in the indirect selection of productive genotypes. Genotypes G42, G4, G34, G31, G20, G16, and G1 were identified as superior for grain yield. It is concluded that blue-band–based indices, such as BGI, are efficient for selecting genotypes under nitrogen stress before flowering. 2026-02-19T00:00:00Z https://ri.ufs.br/jspui/handle/riufs/26061 Título: Potencial fisiológico de sementes de alface submetidas a diferentes períodos de pré-embebição Autor(es): Gomes, Euller José Santos Abstract: Seed pre-soaking is an agronomic practice used in certain species to promote faster and more uniform emergence. The aim of this work was to evaluate the vigor of lettuce cultivars in response to seed pre-soaking duration. The experimental design used was completely randomized with in a 3 × 3 factorial scheme, consisting of three genotypes (Americana Grandes Lagos–Feltrin, Mimosa Salad Bowl, and Americana Grandes Lagos–Isla) and three seed pre-soaking durations (0, 12, and 24 hours). When evaluating the effect of pre-soaking time on the first count variable, higher values were observed for the seeds were exposed to 12 h (50.68%) and 24 h (53.06%) of incubation. It was also observed that the genotype Americana Grandes Lagos–Feltrin stood out from the other genotypes, with approximately 86% of seedlings emerged by the third day after sowing. The interaction data between pre-soaking time and genotypes showed a statistically significant difference for the genotype Americana Grandes Lagos- Isla across different pre-soaking periods, with the highest mean percentages of emerged seedlings, 87.24% and 85.20%, observed at 12 h and 24 h, respectively. When analyzing the influence of each pre-soaking time in relation to the genotypes, it was observed that the genotype Americana Grandes Lagos – Feltrin showed seedling emergence above 95%. Regarding the Emergence Speed Index (ESI), it was found that the effect of this interaction was similar to that observed for the emergence variable. The genotype Americana Grandes Lagos- Feltrin stood out from the others for all analyzed variables. 2026-02-03T00:00:00Z