https://repositorio.ufu.br/handle/123456789/5161 Tue, 07 Apr 2026 04:27:22 GMT 2026-04-07T04:27:22Z https://repositorio.ufu.br/handle/123456789/48592 Title: Estimativas de parâmetros genéticos, correlações e índices de seleção em linhagens de alface crespa, roxa e biofortificada Fri, 13 Mar 2026 00:00:00 GMT https://repositorio.ufu.br/handle/123456789/48592 2026-03-13T00:00:00Z https://repositorio.ufu.br/handle/123456789/48572 Title: Comportamento espacial dos atributos fisiológicos de sementes de soja de um campo de produção Abstract: Soybean seeds may exhibit distinct quality levels when produced in different management zones. This study aimed to evaluate the physiological attributes of soybean seeds and identify their variability and spatial distribution using geostatistical tools. Data were collected at the Glória Farm (Uberlândia, MG) and analyzed at the Seed Analysis Laboratory of the Federal University of Uberlândia (Umuarama Campus). Soybean seeds were harvested from 48 georeferenced points to determine their physiological behavior and spatial dependence patterns. The variability of physiological quality attributes from different zones was assessed through germination, accelerated aging, seedling emergence, electrical conductivity, and seedling length tests. Previously analyzed soil attributes, along with initial plant stand and seed yield, enabled the validation of management zones. Physiological seed quality is not uniformly distributed across the production field; therefore, geostatistics is an effective tool for determining the spatial distribution of physiological quality attributes in soybean seed production areas. Fri, 13 Mar 2026 00:00:00 GMT https://repositorio.ufu.br/handle/123456789/48572 2026-03-13T00:00:00Z https://repositorio.ufu.br/handle/123456789/48562 Title: Desenvolvimento da abóbora manteiga (Cucurbita moschata Duchesne) em resposta a doses crescentes de Ethrel®720. Abstract: Butternut squash stands out among cucurbits cultivated in Brazil due to its wide edaphoclimatic adaptation, high nutritional value, and socioeconomic importance. However, the crop presents physiological limitations related to sexual expression, characterized by the predominance of male flowers, especially under hot climate conditions, which compromises fruit set and productivity. Therefore, floral differentiation and the induction of female flowers in cucurbits remain a major challenge. In this context, the present study aimed to evaluate the effects of different doses of Ethrel 720® on vegetative growth, floral expression, and productive characteristics of butternut squash. The experiment was conducted using increasing doses of the growth regulator (0, 150, 300, 450, 600, and 750 mL ha⁻¹), applied in two sequential applications at 30 and 45 days after transplanting the seedlings to the field. Irrigation was performed by drip irrigation every two days, supplying sufficient water to ensure the formation of a wetted soil bulb. Plants were monitored for vegetative development, branching, and productive units. The results showed non-linear responses to ethephon doses, with intermediate doses promoting a better balance between vegetative and reproductive growth, whereas higher doses resulted in limiting physiological effects. It is concluded that the rational use of ethephon can be an efficient strategy for managing sexual expression in butternut squash, contributing both to vegetative growth at lower doses and to an increase in potentially productive flowers (450 mL ha⁻¹ treatment), consequently increasing the number of fruits per plant (450 mL ha⁻¹ treatment) and improving fruit quality, as indicated by higher soluble solids content (15% Brix) in treatments between 450 mL ha⁻¹. Fri, 06 Mar 2026 00:00:00 GMT https://repositorio.ufu.br/handle/123456789/48562 2026-03-06T00:00:00Z https://repositorio.ufu.br/handle/123456789/48545 Title: Qualidade e produtividade de alho-semente em função dos pontos de colheita e métodos de secagem Abstract: Garlic (Allium sativum L.) is a crop of high economic importance that is vegetatively propagated; thus, its productivity and commercial quality depend directly on the quality of the seed garlic used. Determining the harvest stage and post-harvest management, particularly bulb drying methods, are key factors for maintaining the physiological and structural quality of propagative material and the productive performance of the subsequent generation. However, information regarding the interaction between these factors remains limited under Brazilian Cerrado growing conditions. Therefore, this study aimed to evaluate the influence of different harvest stages and drying methods on the productivity and quality of seed garlic (cv. Ito). The experiment was conducted in Rio Paranaíba, Minas Gerais, Brazil, using a randomized block design arranged in a 3 × 2 factorial scheme with five replications. Treatments consisted of three harvest stages (early, normal, and late) combined with two drying methods (natural curing by hanging and artificial drying). Biometric evaluations were performed at 50, 89, 110, and 134 days after planting, in addition to bulb classification based on diameter, skin integrity, and estimated yield. Harvest stage was the main factor associated with seed garlic performance, influencing dry matter accumulation, bulb physical integrity, and the distribution of commercial classes. Harvesting at normal and late stages increased the proportion of higher commercial classes (>6), which have greater economic value, and resulted in a higher proportion of closed bulbs, whereas early harvesting restricted bulb filling and increased the occurrence of open bulbs. The drying method showed a complementary effect, acting predominantly on bulb physical attributes and the maintenance of the structural quality of planting material. Artificial drying was more efficient for materials harvested early, reducing structural losses, while natural curing by hanging showed equivalent performance when associated with the normal harvest stage. Thu, 12 Feb 2026 00:00:00 GMT https://repositorio.ufu.br/handle/123456789/48545 2026-02-12T00:00:00Z