The interest in the production of hops in Brazil, motivated by the third position in the world ranking of beer producers and the growth of the craft brewery business, justifies the intensification of studies into its adaptation to local growing conditions. Due to the high internal demand, the aim of this study was to evaluate the phytochemical profiles of hop varieties grown in subtropical conditions under different cropping systems. Studies that promote the expansion of cultivation areas in distinct climate conditions and ensure quality are very important. A randomized block design was adopted with a 2 × 5 subdivided plot. The main factor was the cropping system (organic and conventional), and the secondary factor was the hop variety (Columbus, Chinook, Nugget, Cascade and Hallertau Mittelfrüeh), with four blocks and four plants per plot. The quality parameters monitored in this work were the contents of alpha and beta acids, and xanthohumol in the inflorescences of hops, as well as the relative composition of their essential oils. The variations in the chemical profiles of essential oils showed differences between some varieties, and the different compositions and levels resulting from the two cropping systems show that management and cultural practices can influence the aromatic characteristics of hops; in total, 23 compounds were found. The terpene fraction represented 79.67% of the oil in Hallertau and 93.63% in Cascade, with myrcene being the main compound. The levels of bitter acids and xanthohumol did not differ statistically as a function of the treatments. This study contributes the first records of the chemical profiles of hops grown in subtropical conditions in Brazil, in general, the Nugget variety had the highest qualitative potential

Hop (Humulus lupulus L.) is a crucial ingredient in beer, valued for its bitter acids and essential oils. Traditionally cultivated in temperate regions, hop production faces challenges from climate change, necessitating the exploration of new growing areas. This study evaluated the chemical quality of hop varieties grown in Brazil’s subtropical conditions to assess their suitability for brewing. Seven hop varieties (Cascade, Centennial, Columbus, Chinook, Comet, Fuggle, and Nugget) were analyzed for total α- and β-acids and essential oil composition. Bitter acids were quantified by spectrophotometric analysis, and volatile compounds were identified using gas chromatography coupled to mass spectrometry (GC-MS). Comet exhibited the highest a-acid level (10.54%), indicating strong bittering potential. Essential oil analysis revealed β-myrcene, (E)-caryophyllene, and α-humulene as predominant compounds. Centennial showed a distinct (E)-β-farnesene profile, a characteristic of noble hops. All varieties contained α- and β-selinene, suggesting a common metabolic pattern. The results indicate that Brazil has the potential to produce high-quality hops with suitable chemical profiles for brewing. As traditional hop-growing regions face climate-related challenges, hops cultivated in Brazil may offer a viable alternative for achieving the desired chemical composition required by the brewing industry.

Hop is a multifunctional specie; however, a large part of its production is destined for the beer market. In Brazil, all hop demand is imported, which has aroused interest in national production. Genetic material and cultivation systems can influence hops production. Thus, this study evaluated morphological and productive performance of hop varieties grown under organic and conventional management in the central-west region of São Paulo, Brazil. The hop yard was installed in the experimental area of the FCA/UNESP (São Paulo State University, School of Agriculture) - Botucatu, in November 2018, the data were collected in second year of production. A randomized block design was adopted, in 2 x 5 Split-Plot, being the main factor: cultivation systems (organic and conventional), and secondary factor: hop varieties (Columbus, Chinook, Nugget, Cascade, and HallertauMittelfrüeh), with four blocks and four plants per plot. Crop-specific morphological and productive parameters were evaluated. The results showed no significant influence of cultivation systems in morphological parameters. Regarding the varieties, Chinook, Cascade, and Nugget stand out for cone length. Columbus, Chinook and Cascade showed higher yields when grown in organic system, obtaining 1100.66, 1088.27 and 940.40 g of cones per plant, respectively. While, HallertauMittelfrüeh variety was the least productive in both systems, in organic system with 160.50 g per plant production, and 267.84 g per plant in conventional system, and, also showing lower cycle compared to the others.

O presente trabalho teve como objetivo avaliar a propagação vegetativa do assa-peixe Vernonia polyanthes Less utilizando estacas apicais e diferentes substratos. O experimento foi conduzido em condições de casa de vegetação com irrigação controlada na Faculdade de Ciências Agronômicas da UNESP campus Botucatu- SP. O delineamento experimental utilizado foi o inteiramente casualizado, com sete tratamentos (Solo de textura argilosa; 50% Solo de textura argilosa + 50% Húmus; Solo de textura média; 50% Solo de textura média + 50% Húmus; Solo de textura arenosa; 50% Solo de textura arenosa + 50% Húmus; Húmus) e quatro repetições, sendo 10 estacas por repetição. As características avaliadas foram: comprimento da maior raiz, comprimento da parte aérea, número de brotações, porcentagem de enraizamento, volume radicular, nota para qualidade das estacas e massa seca da parte aérea e das raízes. Os dados foram submetidos à análise de variância pelo teste F e as médias comparadas pelo teste de Scott & Knott a 5% de probabilidade. Para a análise estatística, utilizou-se o programa SISVAR ®. A partir da análise, observou-se efeito altamente significativo dos tratamentos utilizados para todas as variáveis analisadas, com exceção da massa seca da parte aérea, que não apresentou diferença significativa. Para obtenção de melhor enraizamento da espécie em questão, o recomendado é a utilização do substrato: solo de textura argilosa ou média, acrescido de húmus na proporção de 1:1.

RESUMO O trabalho teve como objetivo avaliar a qualidade e vida útil de ramos de manjericão submetidos a procedimentos de conservação pós-colheita. O experimento foi conduzido no Laboratório de Plantas Medicinais do Departamento de Horticultura, da Universidade Estadual Júlio de Mesquita Filho, município de Botucatu, São Paulo. O delineamento utilizado foi inteiramente casualizado com quatro tratamentos e seis repetições. Os tratamentos consistiram de técnicas de conservação pós-colheita seguintes: Testemunha (sem tratamento pós-colheita), embalagem plástica, hidroresfriamento, hidroresfriamento + embalagem. As variáveis analisadas foram perda de massa e vida útil. Os dados foram submetidos à análise de variância e as médias comparadas pelo teste de Tukey a 5% de probabilidade, pelo programa ASSISTAT 7.7 beta. A partir desses dados, a utilização de embalagem plástica associada ao método de hidroresfriamento contribuiu para a conservação pós-colheita e vida útil do manjericão.

Influência de diferentes substratos na germinação de jambu (Spilanthes oleracea L. - Asteraceae). DOI: 10.5007/2175-7925.2011v24n2p21