_ The main scope of this work was to detect (Panicum maximum Jacq.) genotype differences as to morphoagronomic and seed quality indices, and to establish character correlations useful for determining vegetative and reproductive trends. Besides the flowering cycle, eight phenological and two seed quality traits were scored in a greenhouse randomized complete block experiment, as follows: plant height (PH), reproductive tiller number/overall tiller number (RTN/OTN), panicle number/reproductive tillers (PN/RT), leaf length (LL), leaf width (LW), panicle length (PL), fresh weight (FW), dry weight (DW), number of seeds/g (NS/G) and seed sample physical purity (SPP). Very-early and early-flowering hybrids consistently showed the highest correlation values among flowering cycle and RTN/OTN (r = -0.59**), PN/RT (r = -0.48**), NS/G (r = -0.88**) and SPP (r = -0.80**) (reproductive parameters) while intermediate and late-flowering hybrids presented the highest values for LL (r = 0.53**), LW (r = 0.60**), PL (r = 0.77**), FW (r = 0.78**) and DW (r = 0.85**) (vegetative traits). The implications of these results for plant breeding and forage management purposes are discussed.Index terms: Panicum maximum, flowering, agronomic characters, vegetative propagation. Diferenças no desempenho vegetativo e reprodutivo entre quinze híbridos de capim-coloniãoResumo _ O principal objetivo deste trabalho foi o de determinar as tendências de desempenho vegetativo e reprodutivo de híbridos de capim-colonião (Panicum maximum Jacq.) recém desenvolvidos, com os genótipos variando quanto ao ciclo de florescimento (desde muito precoces até tardios). Além do ciclo do florescimento, oito parâmetros fenológicos e dois de qualidade das sementes foram testados, em experimento em blocos completos ao acaso em casa de vegetação, como segue: altura da planta (AP), número de perfilhos reprodutivos/número total de perfilhos (NPR/NTP), número de panículas/perfilhos reprodutivos (NP/PR), comprimento da folha (CF), largura da folha (LF), comprimento da panícula (CP), peso fresco (PF), peso seco (PS), número de sementes/g (NS/G) e pureza física das amostras de sementes (PFS). Os híbridos precoces e semiprecoces apresentaram sempre os maiores valores de correlação obtidos entre ciclos de florescimento e NPR/NTP (r = -0,59**), NP/PR (r = -0,48**), NS/G (r = -0,88**) e PFS (r = -0,80**) (parâmetros reprodutivos) enquanto os híbridos intermediários e tardios apresentaram valores de correlação mais elevados de CF (r = 0,53**), LF (r = 0,60**), CP (r = 0,77**), PF (r = 0,78**) e PS (r = 0,85**) (características vegetativas). Discutem-se as implicações desses resultados para o melhoramento genético e o manejo de pastagens.Termos para indexação: Panicum maximum, floração, características agronômicas, propagação vegetativa.
Cowpea aphid-borne mosaic virus (CABMV) causes passion fruit woodiness disease, which considerably reduces the lifespan and fruit production of passion fruit (Passiflora edulis; Passifloraceae) in Brazil (Fischer & Rezende, 2021). CABMV infection results in economic loss at the farmer and the national level as Brazil is the world's largest producer of passion fruit. In 2020, 46,436 ha of land was planted with passion fruit in Brazil, resulting in a yield of 690,364 tonnes and an average productivity of 14.87 t/ha (IBGE, 2022).Cowpea aphid-borne mosaic virus belongs to the genus Potyvirus, which includes several viruses that cause economically important diseases in various crops. The virus particles are flexuous and filamentous, approximately 680-900 nm, and have a genome
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