RESUMO

Banana 'Prata' has a significant demand in the Brazilian market, and Minas Gerais is one of the largest banana producers in the country. Scientific studies that evaluate the bananas quality produced in different cultivation regions are still incipient. Thus, this study evaluated the physical, biochemical and sensory attributes of banana 'Prata' from south and north of Minas Gerais and Vale do Ribeira (SP). Bananas from south were also cultivated in different production systems, organic and conventional. Data were submitted to multivariate analysis that provided the discrimination of the samples according to the cultivation regions. Bananas from southern presented higher levels of soluble solids and acidity, better taste, higher diameter and overall acceptance, where in the organic bananas were the most preferred by consumers. Fruit from northern stood out in appearance, texture, aroma and color, in addition to greater length. Fruit from Vale do Ribeira had higher levels of total phenolics and antioxidant activity. With these results we can assume that fruit quality is highly related to the specific climatic conditions from each producing region. Bananas from the south of Minas Gerais showed superiority for most of the evaluated traits, reflecting on consumer preference.

Assuntos

Musa , Frutas , Paladar , Odorantes , Antioxidantes

RESUMO

The characterization and conservation of castor accessions in germplasm bank are essential in order to breeding programs achieve its goals. Despite Brazil having the 4th largest castor germplasm bank in the world, castor diversity in Brazil remains little explored. Thus, this study aimed at characterize castor accessions collected in different Brazilian regions by means of 31 morphoagronomic traits and gray mold reaction. Forty accessions of the Universidade do Estado de São Paulo (UNESP), Botucatu, SP, Brazil, germplasm bank were evaluated. Genetic parameters were estimated for the quantitative traits, and the accessions were grouped by Ward method using the standardized Euclidean distance and the simple coincidence index for quantitative and qualitative data, respectively. Qualitative and quantitative traits were important to understand and differentiate castor accessions. The accessions showed a high variation regarding the castor gray mold reaction. The accessions assessed in this study have been preserved and can be used as a source for genetic variability in the development of new castor varieties in breeding programs.

Assuntos

Variação Genética , Ricinus , Brasil , Variação Genética/genética , Fenótipo , Melhoramento Vegetal

RESUMO

BACKGROUND: The co-inoculation of soybean with Bradyrhizobium and other plant growth-promoting rhizobacteria (PGPR) is considered a promising technology. However, there has been little quantitative analysis of the effects of this technique on yield variables. In this context, the present study aiming to provide a quantification of the effects of the co-inoculation of Bradyrhizobium and PGPR on the soybean crop using a meta-analysis approach. METHODS: A total of 42 published articles were examined, all of which considered the effects of co-inoculation of PGPR and Bradyrhizobium on the number of nodules, nodule biomass, root biomass, shoot biomass, shoot nitrogen content, and grain yield of soybean. We also determined whether the genus of the PGPR used as co-inoculant, as well as the experimental conditions, altered the effect size of the PGPR. RESULTS: The co-inoculation technology resulted in a significant increase in nodule number (11.40%), nodule biomass (6.47%), root biomass (12.84%), and shoot biomass (6.53%). Despite these positive results, no significant increase was observed in shoot nitrogen content and grain yield. The response of the co-inoculation varied according to the PGPR genus used as co-inoculant, as well as with the experimental conditions. In general, the genera Azospirillum, Bacillus, and Pseudomonas were more effective than Serratia. Overall, the observed increments were more pronounced under pot than that of field conditions. Collectively, this study summarize that co-inoculation improves plant development and increases nodulation, which may be important in overcoming nutritional limitations and potential stresses during the plant growth cycle, even though significant increases in grain yield have not been evidenced by this data meta-analysis.