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Gustavo A. Slafer
University of Lleida
CultivarAnthesisBotanyAgronomyBiology
215Publications
59H-index
11.8kCitations
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Publications 219
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#1R. Sanchez-Bragado (University of Lleida)
#2J.W. Kim (University of Lleida)
Last. Gustavo A. Slafer (University of Lleida)H-Index: 59
view all 7 authors...
Abstract The introgression of awns as a source of photoassimilates during grain filling has received has long been of particular attention in wheat. Although the benefits for average grain weight (AGW) seem consistent, those for yield still remain unclear, and the causes for the improved AGW have not been examined. In this study we carried out three field experiments. In two of them, one in CIMMYT (Mexico) and the other in Lleida (Spain), we compared awned-awnless near isogenic lines (NILs) subj...
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#1Paula Prieto (University of Lleida)H-Index: 4
#2Helga Ochagavía (University of Lleida)H-Index: 4
Last. Gustavo A. Slafer (University of Lleida)H-Index: 59
view all 4 authors...
Wheat adaptation can be fine-tuned by earliness per se (Eps) genes. Although the effects of Eps genes are often assumed to act independently of the environment, previous studies have shown that they exhibit temperature sensitivity. The number of leaves and phyllochron are considered determinants of flowering time and the numerical components of yield include spikelets per spike and fertile floret number within spikelets. We studied the dynamics of leaf, spikelet, and floret development in near i...
1 CitationsSource
#1Amanda de Oliveira Silva (KSU: Kansas State University)H-Index: 1
#2Ignacio A. Ciampitti (KSU: Kansas State University)H-Index: 20
Last. Romulo P. Lollato (KSU: Kansas State University)H-Index: 5
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Abstract Understanding factors underpinning the variability in nitrogen (N) utilization efficiency (NUtE) [i.e. grain yield per unit of N uptake at maturity (NupMAT)] is critical to direct future improvements in breeding and agronomic management. To our knowledge, no study has summarized changes in wheat NUtE across a wide range of experimental conditions. We performed a synthesis-analysis using published data to provide a global perspective of NUtE trends in wheat by (i) benchmarking against yi...
2 CitationsSource
#1Amanda de Oliveira Silva (KSU: Kansas State University)H-Index: 1
Last. Romulo P. Lollato (KSU: Kansas State University)H-Index: 5
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A great majority of dryland wheat producers are reluctant to intensify management due to the assumption that lack of water availability is the most critical factor limiting yield and thus, the response to management intensification would be limited. We conducted on-farm field experiments across three locations and two growing seasons in Kansas using 21 modern winter wheat genotypes grown under either standard (SM) or intensified management (IM) systems. The goals of this study were to (i) determ...
1 CitationsSource
#1Roxana Savin (University of Lleida)H-Index: 31
#2Victor O. Sadras (University of Adelaide)H-Index: 52
Last. Gustavo A. Slafer (University of Lleida)H-Index: 59
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Abstract Water and temperature stress during critical periods of grain yield formation are distinctive of wheat crops in Mediterranean environments. However, nitrogen (N) availability may also constrain grain yields in these environments. Benchmarks of yield response to N uptake in Mediterranean conditions are lacking, and extrapolation from non-Mediterranean environments is not warranted. We hypothesised that under Mediterranean environments (1) maximum N uptake would be lower, thus the range o...
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#1Gustavo A. SlaferH-Index: 59
#2Antonio J. Hall (UBA: University of Buenos Aires)H-Index: 36
Last. Daniel J. Miralles (UBA: University of Buenos Aires)H-Index: 33
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La ecofisiologia de cultivos en Argentina tiene una amplia y reconocida trayectoria no solo en el ambito nacional sino tambien internacionalmente a traves de una importante cantidad de trabajos publicados por distintos grupos de investigacion argentinos en revistas cientificas y tecnicas de reconocimiento mundial. En este trabajo se ha intentado poner de relevancia el impacto que la investigacion en ecofisiologia de cultivos realizada en Argentina ha tenido en la comunidad cientifica internacion...
#1Helga Ochagavía (University of Lleida)H-Index: 4
#2Paula Prieto (University of Lleida)H-Index: 4
Last. Gustavo A. Slafer (University of Lleida)H-Index: 59
view all 5 authors...
Differences in time to heading that remain after photoperiod and vernalisation requirements have been saturated are classified as earliness per se (Eps) effects. It has been commonly assumed that Eps genes are purely constitutive and independent of environment, although the likely effect of temperature on Eps effects in hexaploid wheat has never been tested. We grew four near isogenic lines (NILs) for the Eps gene located in chromosome 1D (Eps-D1) at 6, 9, 12, 15, 18, 21 and 24 °C. In line with ...
1 CitationsSource
#1Thomas I. Pérez-Gianmarco (University of Lleida)H-Index: 1
#2Gustavo A. Slafer (University of Lleida)H-Index: 59
Last. Fernanda G. González (CONICET: National Scientific and Technical Research Council)H-Index: 15
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#1Addy L. Garcia (University of Lleida)
#2Roxana Savin (University of Lleida)H-Index: 31
Last. Gustavo A. Slafer (University of Lleida)H-Index: 59
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Grain number (GN) is critical for yield determination, and understanding its physiology may be instrumental to further improving yield. Studying similarities and differences in yield physiology among cereals may highlight physiological traits that might become critical for understanding some constitutive differences between them. Recently it has been proposed that fruiting efficiency (FE, grains set per unit of inflorescence dry weight at anthesis IDWa) would be a relevant trait to further incre...
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#1Roxana SavinH-Index: 31
#2Gustavo A. SlaferH-Index: 59
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