Objetivou-se com este trabalho avaliar a fenologia em função da temperatura do ar e a qualidade de frutos de acessos de Physalis spp. visando sua potencial utilização em programas de melhoramento genético. O experimento foi conduzido na Universidade Federal da Fronteira Sul - campus Chapecó, SC. O delineamento experimental foi inteiramente casualizado, com 67 acessos de Physalis spp. Foram avaliados componenetes fenológicos em três períodos diferentes, observando o (1) número de dias decorridos desde a emissão do botão floral à antese, (2) dias decorridos da antese à fixação de frutos e (3) número de dias para a emissão de nós. Com os dados de temperatura do ar, foi calculada a soma térmica (GD) necessária para alcançar o início de cada evento fenológico. No que tange às variáveis produtivas, foram analisadas a massa de fruto com cálice (g), massa de fruto sem cálice (g), sólidos solúveis (°Brix) e o volume médio de fruto (cm3). Os dados fenológicos foram submetidos a análises descritivas enquanto que os dados produtivos, à Análise de Componentes Principais (PCA – Principal Components Analysis). O primeiro período de observação (06 a 30 de janeiro) resultou em menor número de dias necessários para o aparecimento de nós e para atingir a frutificação à partir da floração. A presença do cálice nos frutos aumentou sensivelmente a massa média do fruto em aproximadamente 0,45 g. A temperatura influencia o ciclo fenológico dos 67 acessos de Physalis os quais, por sua vez, se diferenciam no que diz respeito à qualidade de frutos.

The objective was to evaluate the adaptability and yield stability of different peach rootstock genotypes in subtropical climate in an experiment in Chapecó, Santa Catarina, Brazil. Twenty-one rootstocks under the scion cultivar 'BRS Libra' and one genotype from self-rooted nursery trees were evaluated. The 22 genotypes were evaluated as fruit set and fruit yield in the growing seasons 2014/15, 2015/16, 2016/17 and 2017/18. Adaptability and stability were measured by the GGE biplot method. In the four years of evaluation, plants from self-rooted nursery trees had higher fruit set, yield as well as greater stability. On the other hand, the instability of plants grown on rootstocks from species other than the scion cultivar was greater. It can be concluded that under the tested conditions, the self-rooted genotype of 'BRS Libra' is a potential alternative for peach growers.

No abstract

Among other factors, climate and management may also affect the development and behavior of blackberry, providing different results on cultivars. Therefore the objective of this work was to evaluate the phenological performance of blackberry cultivars and plants conducted with different numbers of primocane. Two experiments were carried out, the first one consisted of the evaluation of four blackberry cultivars: BRS Tupy, Cherokee, BRS Xavante and Guarani, for the second experiment, with the cultivar BRS Tupy, different numbers of primocane were evaluated: drastic pruning of winter, two, three and four primary primocane also conducted in the traditional system. The phenological aspects evaluated in the two experiments were: beginning, end and duration of flowering and harvest. Considering the results obtained, a great difference can be observed between the productive cycles in relation to the period of flowering and harvest, being more extensive in the first cycle. The phenological aspects of the tested cultivars are affected by the climatic factors observed during the evaluations, thus presenting variations between the two years. During the first cycle, only plants subjected to drastic pruning did not reach the same production period as plants submitted to other treatments. Among the tested cultivars 'BRS Tupy' and 'Cherokee' they maintained the highest harvesting periods, even though they presented a great variation between the cycles. Young plants of the cultivar BRS Tupy present a restricted harvest period.

There was increased fruit consumption with potential health benefits in the last years, being blackberry one of these fruits. The objective of this work was to evaluate the performance of Blackberry cultivars and the influence of main stem management on BRS-Tupy cultivar. The first experiment assessed the cultivars: BRS-Tupy, Cherokee, Xavante, and Guarani; in the second experiment the evaluated prunings were: drastic winter pruning, 2, 3, and 4 main primocanes. The variables analyzed were: green and dry leaf mass, leaf area, number and average fruit mass, production per plant, average size and percentage of fruit moisture, and soluble solids. In relation to average weight, fruit size and yield, BRS-Tupy cultivar was superior in both cycles evaluated. As for soluble solids the Cherokee cultivar was superior, but only in the 2016/17 cycle. In the second experiment, in terms of number of fruits and production, pruning of 4 primocanes in the 2016/17 cycle was superior, but in the next cycle the pruning of 3 primocanes equaled it in the production variable. The drastic pruning in these variables is shown to be lower in the two cycles evaluated. Concerning the variable size of fruit, a significant difference was found only in the 2017/18 cycle, where drastic pruning presented smaller fruits. Thus, it can be concluded that, in general, BRS-Tupy cultivar presents the best productive results and that pruning with 4 primocanes initially stands out alone.