A5091709924- Crop Yield and Soil Fertility
- Wheat and Barley Genetics and Pathology
- Genetics and Plant Breeding
- Plant responses to water stress
- Rice Cultivation and Yield Improvement
- Climate change impacts on agriculture
- Nitrogen and Sulfur Effects on Brassica
- Soybean genetics and cultivation
- Plant and soil sciences
- Plant nutrient uptake and metabolism
- Greenhouse Technology and Climate Control
- Agronomic Practices and Intercropping Systems
- Plant responses to elevated CO2
- Irrigation Practices and Water Management
- Plant Micronutrient Interactions and Effects
- Plant Water Relations and Carbon Dynamics
- Genetic Mapping and Diversity in Plants and Animals
- Soil Carbon and Nitrogen Dynamics
- Latin American rural development
- Bioenergy crop production and management
- Agricultural and Food Production Studies
- Plant Stress Responses and Tolerance
- Legume Nitrogen Fixing Symbiosis
- Coastal wetland ecosystem dynamics
- Horticultural and Viticultural Research
Consejo Nacional de Investigaciones Científicas y Técnicas
2016-2025
University of Buenos Aires
2016-2025
Agricultural Plant Physiology and Ecology Research Institute
2016-2025
Centro Científico Tecnológico - San Juan
2007-2024
National Agricultural Technology Institute
2022
Instituto Nacional de Tecnologia
2022
Austral University of Chile
2021
Instituto de Fisiología Vegetal
2003-2019
Universitat de Lleida
2007
Institució Catalana de Recerca i Estudis Avançats
2007
Abstract While an adequate supply of food can be achieved at present for the current global population, sustaining this into future will difficult in face a steadily increasing increased wealth and diminishing availability fertile land water agriculture. This problem compounded by new uses agricultural products, example, as biofuels. Wheat alone provides ≥20% calories protein world's value need to increase production is recognized widely. Currently, world average wheat yield around 3 t/ha...
Further genetic gains in wheat yield are required to match expected increases demand. This may require the identification of physiological attributes able produce such improvement, as well bases controlling those traits order facilitate their manipulation. In present paper, a theoretical framework source and sink limitation is presented fine-tuning crop development an alternative for increasing potential discussed. Following top-down approach, most physiologists have agreed that main...
Yield increases in temperate cereals have been associated with grain number. An experiment was conducted to investigate whether altering the duration of stem elongation period wheat and barley floret fertility thereby A photoperiod-responsive spring (UQ189) (Arapiles) were grown a naturally lit phytotron. Plants at constant (9, 13 19 h) reciprocally interchanged photoperiod [at terminal spikelet (TS, wheat) or triple mound (TM, barley)] alter period. increased late reproductive phase from TS...
Further improvements to wheat yield potential will be essential meet future food demand. As is related the number of fertile florets and grains, an understanding basis their generation instrumental raising yield. Based on (i) a strong positive association between or grains spike dry weight at anthesis; (ii) finding that floret death occurs when spikes grow maximum rate, it was always assumed survival depends growth spike. However, this assumption recently questioned, suggesting assimilates...
Abstract Warm nights are a widespread predicted feature of climate change. This study investigated the impact high night temperatures during critical period for grain yield determination in wheat and barley crops under field conditions, assessing effects on development, growth partitioning crop‐level processes driving number per unit area ( GN ). Experiments combined: (i) two contrasting radiation temperature environments: late sowing 2011 early 2013, (ii) well‐adapted with similar...
Waterlogging is expected to increase as a consequence of global climate change, constraining crop production in various parts the world. This study assessed tolerance 14-days early- or late-stage waterlogging major winter crops wheat, barley, rapeseed and field pea. Aerenchyma formation adventitious roots, leaf physiological parameters (net photosynthesis, stomatal mesophyll conductances, chlorophyll fluorescence), shoot root growth during after waterlogging, seed were evaluated. Wheat...
The wheat spikelet meristem differentiates into up to 12 floret primordia, but many of them fail reach the fertile stage at anthesis. We combined microarray, biochemical and anatomical studies investigate development in plants grown field under short or long days (short extended with low-fluence light) after all spikelets had already differentiated. Long accelerated spike greening, expression genes involved photosynthesis, photoprotection carbohydrate metabolism. These changes started while...
Abstract Further improvements in wheat yields are critical, for which increases grain number would be required. In the recent past, higher was achieved through increased growth of juvenile spikes before anthesis, due to reduction stem growth. As current cultivars have already an optimum height, alternatives must identified further increasing number. One them is fruiting efficiency (grains set per unit spike dry weight at anthesis). Fruiting final outcome fate floret development and...
Grain weight (GW) and number per unit area of land (GN) are the primary components grain yield in wheat. In segregating populations both often show a negative correlation among themselves. Here we use recombinant doubled haploid population 105 individuals developed from CIMMYT varieties Weebill Bacanora to understand relative contribution these their interaction with each other. was chosen for its high GW GN. The phenotyped Mexico, Argentina, Chile UK. Two loci influencing were indicated on...
Most of the required increases in food production over next decades are expected to be achieved through crop yield. As wheat is essential for security it worrying that its yield gains last two were small. To achieve further critical continue increasing number grains per unit area (GN m-2), trait best related In this context, relevant identify main determinants GN m-2 response genetic and environmental factors as well trade-offs between them. present study we compiled a large database across...
Abstract Grain yield and some of its physiological determinants were analysed in a field study conducted over two growing seasons with standard‐height (SH), semi‐dwarf (SD) dwarf (DD) isogenic lines spring wheat sown at recommended delayed dates. The objective was to test whether the action Rht 1 2 alleles improving grain depended upon sowing date. As expected, dwarfing genes significantly reduced plant height both sowings seasons. There tendency for SD line produce more biomass than SH DD...
The influence of constant (9, 13 and 19 h) reciprocally-interchanged photoperiods [at terminal spikelet (TS) or triple mound (TM)] on leaf, tiller primordium development were examined using photoperiod-responsive cultivars spring wheat, ‘UQ 189’ barley, ‘Arapiles’. In both species, longer photoperiod reduced the duration from sowing (S) to double ridge (DR), as expected. However, sensitivity was not restricted this mainly vegetative phase. There also a marked increase reduction in...