28 documents found, page 1 of 3

Genomic evaluation of Coffea arabica and its wild relative Coffea racemosa in M...

Climate change is negatively affecting the coffee value chain, with a direct effect on approximately 100 million people from 80 countries. This has been attributed to the high vulnerability of the two-mainstream species, Coffea arabica and Coffea canephora, to extreme weather events, with notable uneven increases in market prices. Taking into account the narrow genetic plasticity of the commercial coffee cultiv...

Nutrient accumulation in fruits and grains of black pepper at different ripenin...

GESTÃO DAS EMPRESAS RURAIS CAFEEIRAS NO ESTADO DO ESPÍRITO SANTO, BRASIL

The coffee has been present in the economy of the Espírito Santo state since the early nineteenth century and represents the largest source of income in most of its municipalities. Its production is predominantly based on small family properties, distributed in regions with heterogeneous socioeconomic and edaphoclimatic characteristics and distinct technological levels. Therefore, an accurate management system ...

Establishment of leaf nutrient patterns for the nutritional diagnosis of Urochl...

To diagnose and monitor the nutritional status of commercial crops, reference standards must be established based on chemical analyses of soils and leaf tissues. Therefore, the objective of this study was to establish sufficiency ranges, DRIS standards and leaf nutritional diagnoses for palisade grass pastures in the rainy and dry seasons. Of a total of 105 sampled pastures, the 20 highest-yielding areas were u...

Intrinsic non-stomatal resilience to drought of the photosynthetic apparatus in...

Growing water restrictions associated with climate changes constitute daunting challenges to crop performance. This study unveils the impacts of moderate (MWD) or severe (SWD) water deficit, and their interaction with air [CO2], on the photosynthetic apparatus of Coffea canephora Pierre ex A. Froehner cv. Conilon Clone 153 (CL153) and Coffea arabica L. cv. Icatu. Seven year-old potted plants grown under 380 (aC...

Diversity of leaf stomatal traits among Coffea canephora Pierre ex A. Froehner ...

Leaf morpho-anatomical characteristics directly reflect photosynthetic performance and the ability to adapt to different environmental conditions. The study of biometric traits is essential for the selection of promising plant materials for breeding purposes. To identify new varieties of coffee plants with desirable traits for genetic improvement programs, this study investigated the variability of leaf morpho-...

Infrared spectroscopy for genotypic characterization of Coffea canephora clones

O café conilon (Coffea canephora), também conhecido como robusta, participa em torno de 25% do café produzido no Brasil. O melhoramento genético da espécie tem proporcionado um incremento substancial na qualidade final da bebida, por meio do lançamento de diversos materiais genéticos. Estes por sua vez apresentam uma grande diversidade na composição química, que impactam diretamente na qualidade do material gen...

EDITORIAL

Resilient and sensitive key points of the photosynthetic machinery of coffea sp...

This study unveils the single and combined drought and heat impacts on the photosynthetic performance ofCoffea arabicacv. Icatu andC. canephoracv. Conilon Clone 153 (CL153). Well-watered (WW) potted plants were gradually submitted to severe water deficit (SWD) along 20 days under adequate temperature (25/20 degrees C, day/night), and thereafter exposed to a gradual temperature rise up to 42/30 degrees C, follow...

Vegetative growth of 28 genotypes of Coffea canephora at 850 meters of altitude

Coffea canephora plants grown at low or elevated temperatures undergo changes in photosynthetic processes, which have a direct impact on vegetative growth. This species shows plants with distinct stress tolerance mechanisms and a great genetic diversity; however, there are no studies concerning the study of altitude on plant growth for these genotypes. The objective of this study was to evaluate the growth rate...