A5089817700- Crop Yield and Soil Fertility
- Genetics and Plant Breeding
- Genetic Mapping and Diversity in Plants and Animals
- Plant nutrient uptake and metabolism
- Plant Stress Responses and Tolerance
- Plant Molecular Biology Research
- Plant responses to elevated CO2
- Genetic and phenotypic traits in livestock
- Plant Micronutrient Interactions and Effects
- Aluminum toxicity and tolerance in plants and animals
- Rice Cultivation and Yield Improvement
- Silicon Effects in Agriculture
- Genetic diversity and population structure
- Climate change impacts on agriculture
- Legume Nitrogen Fixing Symbiosis
- Metabolomics and Mass Spectrometry Studies
- Plant and soil sciences
- Plant responses to water stress
- Bioenergy crop production and management
- Smart Agriculture and AI
- 3D Printing in Biomedical Research
- Bacterial biofilms and quorum sensing
- Antimicrobial Resistance in Staphylococcus
- Fuzzy Logic and Control Systems
- Analytical Chemistry and Chromatography
Centro Internacional de Mejoramiento de Maíz Y Trigo
2013-2022
Pennsylvania State University
2010-2012
ETH Zurich
2009
To increase genetic gain for tolerance to drought, we aimed identify environmentally stable QTL in per se and testcross combination under well-watered (WW) drought stressed (DS) conditions evaluate the possible deployment of using marker assisted and/or genomic selection (QTL/GS-MAS). A total 169 doubled haploid lines derived from cross between CML495 LPSC7F64 190 testcrosses (tester CML494) were evaluated a 11 treatment-by-population combinations WW DS conditions. In response DS, grain...
Identifying quantitative trait loci (QTL) of sizeable effects that are expressed in diverse genetic backgrounds across contrasting water regimes particularly for secondary traits can significantly complement the conventional drought tolerance breeding efforts. We evaluated three tropical maize biparental populations under water-stressed and well-watered drought-related morpho-physiological traits, such as anthesis-silking interval (ASI), ears per plant (EPP), stay-green (SG) plant-to-ear...
Hyperspectral cameras can provide reflectance data at hundreds of wavelengths. This information be used to derive vegetation indices (VIs) that are correlated with agronomic and physiological traits. However, the generated by hyperspectral richer than what summarized in a VI. Therefore, this study, we examined whether prediction equations using image lead better predictive performance for grain yield achieved VIs. For equations, considered three estimation methods: ordinary least squares,...
We aimed to identify quantitative trait loci (QTL) for secondary traits related grain yield (GY) in two BC1F2:3 backcross populations (LPSpop and DTPpop) under well-watered (4 environments; WW) drought stressed (6; DS) conditions facilitate breeding efforts towards tolerant maize. GY reached 5.6 5.8 t/ha WW the LPSpop DTPpop, respectively. Under DS, was reduced by 65% (LPSpop) 59% (DTPpop) relative WW. strongly associated with normalized vegetative index (NDVI; r ranging from 0.61 0.96)...
To aid breeding for heat‐tolerant germplasm we analyzed the effects of high temperatures on CO 2 exchange rate (CER), crop growth (CGR), kernel number (KN), and grain yield (GY) in a 30‐d period bracketing flowering. Field experiments, including three maize ( Zea mays L.) hybrids with temperate (Te), tropical (Tr) × (Tx) adaptation were performed two experiments (Exp. 1 2). Hybrids subjected to induced by shelters during 15‐d before (H1; preflowering) or after silking (H2; postflowering)....
The epidemiology of methicillin-resistant Staphylococcus aureus (MRSA) at an international level shows that most MRSA strains belong to a few pandemic clones. At the local level, predominance one or two clones was generally reported. However, situation is evolving and new are emerging worldwide, some them with specific biological characteristics, such as presence Panton-Valentine leucocidin (PVL). Understanding these changes levels great importance. Our objective analyze evolution multiple...
Abstract In the last years globally, daily night‐time low temperatures have increased more than twice compared with maximum temperatures. There is little evidence about maize growth and yield responses to high night temperature (HNT) under field conditions. this study, we aimed (i) evaluate effect of HNT during post‐flowering on kernel number (KN), crop rate expressed in chronological days thermal units (CGR D CGR TU , respectively), radiation use efficiency (RUE), respiration (Rn), net...
In comparison to the exponential increase of genotyping methods, phenotyping strategies are lagging behind in agricultural sciences. Genetic improvement depends upon abundance quantitative phenotypic data and statistical partitioning variance into environmental, genetic, random effects. A metabolic strategy was adapted sample throughput while saving reagents, reducing cost, simplifying analysis. The chemical profiles stem extracts from maize plants grown under low nitrogen (LN) or control...
The objective of this study was to evaluate Maize ( Zea mays L.) elite lines currently available in CIMMYT's lowland tropical breeding program Latin America under multiple abiotic stresses and identify with tolerance drought, N deficiency, combined heat drought stress (HTDS). An incomplete line‐by‐tester design used 436 testcrosses nonstressed conditions, 507 417 (DS), 368 HTDS 30 season‐by‐location combinations between 2012 2015. Elite CLRCY016, CML269, CML550, CML551 performed well across...
SUMMARY To support tropical maize ( Zea mays L.) breeding efforts, the current work aimed to assess harvest index (HI) in modern hybrids and determine effect of different planting densities on grain yield HI under well-fertilized (HN) nitrogen (N) deficient conditions. Harvest 34 average reached 0·42 7·06 t/ha (five environments), indicating a large potential for improvement relative temperate hybrids. Ear weight r = 0·88), 0·78) shoot dry 0·68) were strongly associated with yield. In second...
ABSTRACT Maize ( Zea mays L.) hybrids with enhanced provitamin A (proVA) content have been deployed in sub‐Saharan Africa, where low soil nitrogen and drought stress are common. The objectives of this study were to assess: (i) the effects low‐N on grain proVA content, (ii) inheritance carotenoids under these conditions. An 11‐line diallel cross (55 F 1 crosses) was evaluated for carotenoid yield optimum conditions, drought, stress. Compared treatment, mean lower both treatments. consistency...
High throughput phenotyping technologies are lagging behind modern marker technology impairing the use of secondary traits to increase genetic gains in plant breeding. We aimed assess whether combined hyperspectral data with could be used improve across location pre-harvest yield predictions using different statistical models. A maize bi-parental doubled haploid (DH) population derived from F1, which consisted 97 lines was evaluated testcross combination under heat stress as well and drought...
In light of anticipated climate change, we assessed the possibility to use an airborne platform measure canopy temperature (CT) and normalized differential vegetation index (NDVI) as well suitability both traits for their in breeding tolerance heat stress. We evaluated 71 subtropical maize (Zea mays L.) hybrids under stress combined drought environment with average temperatures 29.8°C during growing season 31.2°C flowering period. Grain yield (GY) ranged from 0.33 4.19 Mg ha−1 0 1.37 stress,...
We studied the interrelation among time to anthesis, physiological maturity, and grain yield in tropical maize ( Zea mays L.) facing terminal drought nitrogen deficiency. Sixty‐one hybrids were grown under optimum, nitrogen‐deficient (LN), drought‐stressed (DS) conditions. Grain was negatively correlated with anthesis DS r = −0.4*) positively grain‐filling period (optimum: 0.54**; LN: 0.61***; DS: 0.69***) across treatments. These results suggest that coselecting for yield, early a long...