Potential of advanced breeding lines of bread-making wheat (Triticum aestivum L.) to accumulate in grain minerals (Ca, Fe, Mg and Zn) and low-phytates concentration under Mediterranean Conditions.
About 3 billion people may suffer from micronutrient deficiency such as Ca, Fe, Mg or Zn, caused not only by a mineral deficiency in staple food but also by a high content of phytates which bind those minerals and inhibit their absorption. With the aim of evaluating the potential of new cultivars of bread‐making wheat...
Ideotipo Sul, um Programa de investigação que visa criar variedades de trigo adaptadas ao clima: mais tolerantes ao stress hídrico e ao calor.
A caracterização de variedades de trigo mais tolerantes aos stresses hídrico e térmico, que se fazem sentir no sul de Portugal e no sudeste de França (que se perspetiva virem a agravar-se com os novos cenários consequência das alterações climáticas), tem evoluído graças a uma colaboração que conta com equipas de investigadores e agricultores (abordagem...
Combined zinc and nitrogen fertilization in different bread wheat genotypes grown under Mediterranean conditions.
The combined application of nitrogen (N) and zinc (Zn) appears to be a promising agronomic strategy for the biofortification with Zn. To evaluate such efficiency, a field experiment was conducted in south-eastern Portugal under Zn-deficient soil. in Cereal Research Communications, 45(1). Leia o trabalho completo aqui.
Zinc (Zn) concentration of bread wheat grown under Mediterranean conditions as affected by genotype and soil/foliar Zn application.
The combination of plant breeding and agronomic biofortification is the most reasonable approach to minimize zinc (Zn) deficiency-related problems in humans, but also in crop production. However, its efficiency and suitability under Mediterranean conditions and its effects on the grain yield and quality parameters are not well known. Field experiments were conducted over two years...
Selenium in bread and durum wheats grown under a soil supplementation regime in actual field conditions, determined by cyclic and radiochemical neutron activation analysis.
This work focuses on the ability of bread and durum wheat to accumulate selenium (Se) via a soil-addition procedure at sowing time. Total Se in mature-grain samples was determined by neutron activation analysis (cyclic and radiochemical). in Journal of Radioanalytical and Nuclear Chemistry 304 (1): 139-143. Leia o trabalho completo aqui.
Selenium characterization of the Portuguese bread-wheat archival collection.
The INIAV-Elvas wheat collection has always been an invaluable asset in studies of agronomic and/or genetic development of wheat lines, as well as providing a frame of reference for the nutritional evolution of Portuguese wheat crops. This work addresses the status of selenium (Se) in a pool of 46 accessions of bread wheat. in Crop...
Characterization of selenium-enriched wheat by agronomic biofortification.
Cereals are far from being the main sources of Se on a content basis, but they are likely the major contributors to intake on a dietary basis. To assess their potential to assimilate and biotransform Se, bread and durum wheat were enriched with Se through foliar and soil addition at an equivalent field rate of...
Influence of year and sowing date on bread wheat quality under Mediterranean conditions.
Grain quality is an essential component in wheat breeding programs since influences the commercial value of wheat. This study was conducted to determine the effects of genotype, season and sowing date on quality parameters of seventeen bread wheat commercial varieties and three advanced lines from Portuguese Wheat Breeding Program (Plant Breeding Station, Elvas, Portugal) under...
Physiological Responses to Drought in Four Developed Triticum aestivum Groups.
There is an increasing need to characterize germplasm diversity in order to highlight drought tolerant genotypes and to assist Portuguese wheat breeding programs. Bread wheat (Triticum aestivum) varieties were selected from four different evolutive and/or breeding groups: ancient landraces, traditional varieties, modern currently used and advanced lines. The aim of this work was to identify...
Sequential zinc and iron biofortification of bread-wheat grains: from controlled to uncontrolled environments.
The development of knowledge on bread wheat (Triticum aestivum L.) biofortification in zinc (Zn) and iron (Fe), related to its potential agronomical use and the nutritional and technological implications, is becoming important to strategies for improving human nutrition. In this context, we studied the accumulation of Zn and Fe in grains, considering potential uptake and...