Resumo Os estudos envolvendo a nogueira-pecã têm evoluído consideravelmente nos últimos anos no Brasil. Esta cultura foi introduzida no país no início do século passado e tornou-se importante comercialmente após os anos de 1960, principalmente na região sul. A nogueira-pecã é comprovadamente um simbionte, formando diversas associações mutualísticas com fungos ectomicorrízicos do solo. Assim, a presente revisão tem como objetivos apresentar os estudos sobre os fungos ectomicorrízicos em plantações comerciais de nogueira-pecã no Brasil, destacar a importância agrícola e ambiental desta simbiose, e o potencial da micorrização controlada da nogueira-pecã, visando à produção de espécies desejadas de trufas, notadamente do gênero Tuber, em pomares comerciais, uma atividade econômica de alta rentabilidade.

Abstract Studies involving pecan tree have evolved considerably in recent years in Brazil. Pecans were introduced in the country at the beginning of the last century, and became commercially important after the 1960´s, primarily in the South region. Pecan trees form several ECM associations with mutualistic fungi. Thus, the aims of the present review were to show research data using ECM fungi in commercial pecan orchards in Brazil, present the agricultural and environmental importance of this symbiosis, and show the potential of man-driven mycorrhyzation with pecan, aiming at the production of selected truffles, notably of the genus Tuber, in commercial orchards, a highly profitable economic activity.

RESUMO: Diante do crescente investimento na cultura da nogueira-pecã no sul do Brasil, torna-se necessário que a pesquisa atue auxiliando na solução de problemas e na proposição de técnicas e metodologia para potencializar esta cadeia produtiva. Desta forma, a presente revisão bibliográfica objetiva realizar um levantamento das informações existentes sobre a cultura, tanto no panorama mundial quanto brasileiro. Serão abordadas questões relacionadas com a botânica, exigências climáticas e edáficas, alinhamento e densidade de plantio, cultivares, pragas e doenças, entre outros aspectos técnicos da cultura. A noz apresenta propriedades nutracêuticas, que são benéficas para a saúde humana, o que tem aumentado a sua procura por parte dos consumidores. No entanto, são poucos os resultados de pesquisa com a cultura da nogueira no país e existem diversas lacunas no conhecimento científico sobre o cultivo da nogueira, principalmente, no que diz respeito ao manejo de pragas e doenças, irrigação e nutrição nas condições brasileiras.

ABSTRACT: Given the increasing investment in the pecan production in southern Brazil, it becomes necessary researches, assisting in solve problems and proposition of technical and methodology to enhance this production chain. Thus, the present review aimed to survey the existing information about the culture, both on the world and the Brazilian scene. Issues related to botany, climate and soil requirements, alignment and planting density, cultivars, pests and diseases, among other technical aspects of this culture will be addressed. Pecan nut presents nutraceutical properties that are beneficial to human health, which has increased its demand from consumers. However, there are few research results with pecan nut in Brazil and there are many gaps in scientific knowledge about this culture, especially as regards the management of pests and diseases control, irrigation and nutrition, in Brazilian conditions.

ABSTRACT The aim of this work was to compare the storage potential of ‘Guarani’ and ‘Tupy’ blackberries in controlled atmosphere (CA) and thereafter to determinate the best CA storage conditions for ‘Tupy’ blackberries. Two experiments were carried out. In the first one, ‘Guarani’ and ‘Tupy’ blackberries were stored in CA condition (10 kPa O2 + 15 kPa CO2). We found that ‘Tupy’ blackberry has the best storage potential. Therefore, in the second experiment, several CA conditions were evaluated for ‘Tupy’ blackberries storage, as follows: [1] cold storage (CS): 20.9 kPa O2 + 0.04 kPa CO2; [2] CA with 10 kPa O2 + 15 kPa CO2; [3] CA with 5 kPa O2 + 15 kPa CO2; [4] CA with 10 kPa O2 + 10 kPa CO2. All treatments were stored at 1 °C and 98% (± 1) of relative humidity. The ‘Tupy’ blackberry, despite showing a significant decrease in ascorbic acid content, presented a higher storage potential than ‘Guarani’ blackberry, if stored at recommended CA condition for other cultivars. ‘Tupy’ blackberry stored at 5 kPa O2 + 15 kPa CO2 showed higher ascorbic acid content, soluble solids and titratable acidity as compared to the other storage conditions. In CA with 10 kPa O2 + 15 kPa CO2, the juice was lighter (high L), but differed significantly only from those fruit of CS. The best CA condition for ‘Tupy’ blackberries storage is 5 kPa O2 with 15 kPa CO2.