The objective of this study was to evaluate the quality of white-fleshed dragon fruit (Hylocereus undatus) at harvest and postharvest to determine fruit quality and the feasibility of harvesting the fruits at different outer fruit color stages. The treatments consisted of four peel color stages – S1 (<25% red peel), S2 (25%-49% red peel), S3 (50% to 75% red peel) and S4 (>75% red peel) – and two evaluatio...
The inoculation of growth-promoting bacteria has already shown benefits in different cultures such as increased biomass production for the growth of roots and stems, greater resistance to water stress conditions and changes in their physiological properties. Plant growth promoting bacteria have stood out for their potential application in plant production, allowing the reduction of the use of fertilizers and pe...
A nogueira-macadâmia produz frutos do tipo folículo, cuja parte comestível é a semente, com alto valor agregado no mercado internacional e com grande aceitação pelos consumidores. No Brasil, sabe-se que a época de colheita dos frutos da nogueira-macadâmia inicia-se em meados de fevereiro, porém, não se conhece o potencial produtivo dos diversos cultivares disponíveis nas condições brasileiras. O objetivo deste ...
O objetivo deste trabalho foi avaliar o efeito de concentrações de silício e ágar no desenvolvimento in vitro de crista-de-galo (Celosia cristata) (Amaranthaceae). Análises fitotécnicas, anatômicas e ultraestruturais foram conduzidas em delineamento inteiramente casualizado, em arranjo fatorial 4x3, com quatro concentrações de ácido silícico (0,0, 0,5, 1,0 e 1,5 g L-1) e três de ágar (5,5, 8,0 e 10,5 g L-1), no...
Uvaia (Eugenia pyriformis) is a fruit tree of the Myrtaceae family. It has recalcitrant seeds of limited longevity, making seed propagation difficult. Micropropagation is an alternative method to obtain a large quantity of progeny plants in a short period of time, by using any part of the plant as explant. The high concentration of phenols associated with the chemical composition of the Myrtaceae, and the prese...
Research suggests that the development of micropropagated banana plants can be improved by altering nutrient concentrations in the culture medium. The aim of this study was to evaluate the in vitro development of banana plants exposed to varying concentrations of calcium and magnesium sulfate. The shoot tips of banana cv. Prata-Anã were inoculated in flasks (volume, 250 cm3) containing 50 mL of MS culture mediu...
Um importante método de multiplicação in vitro de plantas de Coffea é a embriogênese somática, que consiste no desenvolvimento de embrióides a partir de células haplóides ou somáticas possibilitando a micropropagação acelerada de clones superiores e a manutenção de híbridos interespecíficos. Entretanto, há poucos relatos da obtenção de embriogênese direta na espécie Coffea arabica. Objetivou-se com este trabalh...
The cultivation of traditional varieties of banana in Brazil has suffered from major pests and diseases. The breeding of new strains of banana based on the duplication of chromosomes via treatment with antimitotic agents has been proposed as a way of introducing disease resistance into the hybrids produced by banana breeding programs. The aim of this study was to evaluate the action of colchicine in the apex ...
Bacuri, the fruit of the Amazonian bacurizeiro tree (Platonia insignis), shows great economic potential for widespread use. It can represent an excellent new addition to the exotic fruit market. Little is known about the anatomy of P. insignis, the types of reserves contained in the seeds and the DNA content of species of the family Annonaceae. The aimed was to characterize seeds and seedlings histochemically...
A Physalis peruviana L. pertence à família Solanaceae, representa um grande potencial econômico, sendo classificada como fruta fina, a exemplo do mirtilo, framboesa, cereja, amora e pitaya. Ainda tem consumo restrito por causa do alto valor agregado, em decorrência da produção limitada, do manejo da colheita, da exigência em mão-de-obra, dos cuidados no transporte e da armazenagem. Objetivou-se com este trabalh...