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Publications (153)
One of the strategies to combat micronutrient malnutrition is by developing biofortified common bean lines (Phaseolus vulgaris L.) capable of tolerating different stress conditions. In this study, the adaptive responses of different biofortified bean lines grown under combined stress of acidic soil and high-temperatures were evaluated in the Colomb...
The development of biofortified and stress tolerant common bean lines contribute to counteract micronutrient malnutrition in the current condition of climate variability. Our objective was to evaluate the adaptive responses of biofortified common bean (Phaseolus vulgaris L.) lines under acidic soils and high temperature stress conditions in the Ama...
Many common bean (Phaseolus vulgaris L.) plants cultivated in areas of the world with acidic soils exhibit difficulties adapting to low phosphorus (P) availability, along with aluminum (Al) toxicity, causing yield loss. The objective of this study was to evaluate the influence of an increase in P supply level on the agronomic, phenological, and phy...
Knowledge is limited about the level of bioactive compounds and antioxidant activity of seeds from bred lines of common beans developed from interspecific crosses using four different Phaseolus species (P. vulgaris L., P. coccineus L., P. acutifolius A. Gray. Gray., and P. dumosus). In this study, differences in the nutritional quality of seeds amo...
Increasing seed yield in common bean could help to improve food security and reduce malnutrition globally due to the high nutritional quality of this crop. However, the complex genetic architecture and prevalent genotype by environment interactions for seed yield makes increasing genetic gains challenging. The aim of this study was to identify the...
Disease stress caused by plant pathogens impacts the functioning of the photosynthetic apparatus, and the symptoms caused by the degree of severity of the disease can generally be observed in different plant parts. The accurate assessment of plant symptoms can be used as a proxy indicator for managing disease incidence, estimating yield loss, and d...
Acid soils in the Amazon region are characterized by low fertility and high aluminum saturation causing reduced crop yields. Improving genetic adaptation of crop genotypes together with suitable agronomic management practices can mitigate the impact on crop production in acid soils. The objective of the present study was to determine the photosynth...
The evaluation of disease resistance is considered an important aspect of phenotyping for
crop improvement. Identification of advanced lines of the common bean with disease resistance contributes to improved grain yields. This study aimed to determine the response of the photosynthetic apparatus to natural pathogen infection by using chlorophyll (C...
Intercropping is a common practice among smallholder farmers cultivating common bean (Phaseolus vulgaris L.) and maize (Zea mays L.). It affects agronomic performance, dry matter partitioning, and grain yield. Simultaneous intercropping of common bean with maize can influence growth, development, and dry matter partitioning of grain of common bean....
Common bean (Phaseolus vulgaris L.) production in the tropics typically occurs in rainfed systems on marginal lands where yields are low, primarily as a consequence of drought and low phosphorus (P) availability in soil. This study aimed to investigate the physiological and chemical responses of 12 bush bean genotypes for adaptation to individual a...
Intercropping the common bean (Phaseolus vulgaris L.) with maize (Zea mays L.) is a widely used agronomic practice in smallholder farms in different regions of the world. Although it is a common practice in the Colombian Amazon region, crop yields are low due to the degradation of low fertility, acidic soil and high-temperature stress. Studies are...
Common bean (Phaseolus vulgaris L.) is the most important legume for direct human consumption worldwide. It is a rich and relatively inexpensive source of proteins and micronutrients, especially iron and zinc. Bean is a target for biofortification to develop new cultivars with high Fe/Zn levels that help to ameliorate malnutrition mainly in develop...
Knowledge of the physiological basis for improved genetic adaptation of common bean (Phaseolus vulgaris L.) lines to acid soils and high temperature conditions in the Amazon region of Colombia is limited. In this study, we evaluated the differences among 41 common bean lines in energy use, leaf cooling, photosynthate partitioning to pod formation a...
In our study, we analyzed 30years of climatological data revealing the bean production risks for Western Amazonia. Climatological profiling showed high daytime and nighttime temperatures combined with high relative humidity and low vapor pressure deficit. Our understanding of the target environment allows us to select trait combinations for reachin...
Root rot in common bean is a disease that causes serious damage to grain production, particularly in the upland areas of Eastern and Central Africa where significant losses occur in susceptible bean varieties. Pythium spp. and Fusarium spp. are among the soil pathogens causing the disease. In this study, a panel of 228 lines, named RR for root rot...
Background. Common bean is an important staple crop in the tropics of Africa, Asia and the Americas. Particularly smallholder farmers rely on bean as a source for calories, protein and micronutrients. Drought is a major production constraint for common bean, a situation that will be aggravated with current climate change scenarios. In this context,...
Common bean (Phaseolus vulgaris) cultivation delivers income to farmers and nutrition to consumers in sub-Saharan Africa. With a growing population and land scarcity, there will be greater pressure to intensify common bean and other crops in the region. However, high temperatures and increased drought may reduce common bean yields in Africa. Climat...
Accurate assessment of crop water uptake (WU) and water use efficiency (WUE) is not easy under field conditions. Carbon isotope discrimination (Δ¹³C) has been used as a surrogate of WUE to examine crop yield responses to drought and its relationship with WU and WUE. A 2‐yr study was conducted (i) to characterize genotypic variation in Δ¹³C, grain y...
Crop yield requires leaf area to intercept solar radiation and to undertake photosynthesis, both of which depend on nitrogen (N) accumulation. Further, the amount of accumulated plant N at the beginning of seed fill serves as the reservoir for N required in synthesizing the proteins in developing seeds. For common bean (Phaseolus vulgaris L.), reso...
These datasets contain phenotypic and genotypic data of a MAGIC (Multiparent Advanced Generation Inter-Crosses) population of common bean (Phaseolus vulgaris L.), developed by inter-crossing of eight Mesoamerican elite breeding lines. The main goal for this population is to be used for applications in breeding and breeding tool development, which w...
Drought substantially limits seed yield of common bean (Phaseolus vulgaris L.) in the tropics. Understanding the interaction of drought on yield and the nutrient concentration of the seed is vital in order to supply nutrition to the millions of consumers who rely on common bean as a staple crop. Nevertheless, the impact of drought on common bean fo...
Iron deficiency is a major public health problem worldwide, with the highest burden among children. The objective of this randomized efficacy feeding trial was to determine the effects of consuming iron-biofortified beans (Fe-Beans) on the iron status in children, compared to control beans (Control-Beans). A cluster-randomized trial of biofortified...
The progress in identification of genotypes with roots showing greater ability to penetrate compacted soils under moisture stress and understanding the physiological basis and morphological expression of the characteristics associated is fundamental to improving crop’s tolerance to drought and to increase productivity under individual and combined...
Drybeans (Phaseolus vulgaris L.) are an important subsistence crop in Central America. Future climate change may threaten drybean production and jeopardize smallholder farmers’ food security. We estimated yield changes in drybeans due to changing climate in these countries using downscaled data from global circulation models (GCMs) in El Salvador,...
Common bean is an important staple crop in Eastern Africa and Latin America. Low soil fertility is a major limitation to agronomic productivity. Symbiotic nitrogen fixation (SNF) is an important property of legumes, leading to high protein levels and high nutritional value. Nitrogen (N) metabolism and yield traits were evaluated in the common bean...
Key message:
This work reports the effects of the genetic makeup, the environment and the genotype by environment interactions for node addition rate in an RIL population of common bean. This information was used to build a predictive model for node addition rate. To select a plant genotype that will thrive in targeted environments it is critical...
In Ethiopia, common bean breeding has been done through introduction of advanced germplasm form the CIAT and local cross making and evaluating the genotypes across years and locations. Through PABRA, bean varieties with known market attributes have also been imported and went through fast tracked evaluation and best ones released. In situ populatio...
Drought is the major abiotic stress factor limiting yield of common bean (Phaseolus vulgaris L.) in smallholder systems in Latin America and eastern and southern Africa; where it is a main source of protein in the daily diet. Identification of shoot and root traits associated with drought resistance contributes to improving the process of designing...
Common bean ( Phaseolus vulgaris L.) is the most important food legume for human consumption. Drought stress is the major abiotic stress limitation of bean yields in smallholder farming systems worldwide. The current work aimed to determine the role of enhanced photosynthate mobilization to improve adaptation to intermittent and terminal drought st...
ABSTRACT: Drought and low soil fertility are the major abiotic constraints to crop productivity and climate change models predict more intense environmental stresses in the semi-arid tropics. To address these major challenges, collaborative research was conducted by IITA, CIAT and Pennsylvania State University. Cowpea and bean germplasms were pheno...
Sowing density is a major management factor that affects growth and development of grain crops by modifying the canopy light environment and interplant competition for water and nutrients. While the effects of density and plant architecture on static vegetative and reproductive growth traits have been explored previously in common bean (Phaseolus v...
Bean (Phaseolus vulgaris L.) production is challenged by many limitations with drought being among the top causes of crop failure worldwide. In this study, we constructed three small-red-seeded bean recombinant inbred line (RIL) mapping populations (S48M, S94M, and S95M) with a common parent (‘Merlot’) and performed joint interval mapping analysis...
La ingesta de proteína y micronutrientes en el Caribe seco colombiano en los últimos años ha sido motivo de preocupación pues cerca del 57 % de sus habitantes tiene déficit de aminoácidos, hierro (Fe) y zinc (Zn) en su dieta. Este artículo muestra los resultados de la evaluación multilocal agronómica de rendimiento y calidad de la semilla de nueve...
Common bean (Phaseolus vulgaris L.) is the most important grain legume for human consumption, and drought stress affects over 60% of dry bean production worldwide. Field and rainout shelter studies were conducted at the International Center for Tropical Agriculture (CIAT), Palmira, Colombia to (i) evaluate phenotypic differences in drought resistan...
Background:
Food-based strategies to reduce nutritional iron deficiency have not been universally successful. Biofortification has the potential to become a sustainable, inexpensive, and effective solution.
Objective:
This randomized controlled trial was conducted to determine the efficacy of iron-biofortified beans (Fe-Beans) to improve iron st...
Nitrogen derived from the atmosphere Nitrogen derived from the soil Nitrogen use efficiency Terminal drought stress a b s t r a c t Common bean (Phaseolus vulgaris L.) is the most important food legume, cultivated by small farmers and is usually exposed to unfavorable conditions with minimum use of inputs. Drought and low soil fertility, especially...
Background:
Plants depend on their root systems to acquire the water and nutrients necessary for their survival in nature, and for their yield and nutritional quality in agriculture. Root systems are complex and a variety of root phenes have been identified as contributors to adaptation to soils with low fertility and aluminium (Al) toxicity. Phen...
Common bean (Phaseolus vulgaris L.) is the most important food legume in the diet of poor people in the tropics. Drought causes severe yield loss in this crop. Identification of traits associated with drought resistance contributes to improving the process of generating bean genotypes adapted to these conditions. Field studies were conducted at the...
Online Resource 1 Tables of average DSSAT simulated yields for departments in each country.
Online Resource 2 Maps of drybeans impact hot spots HIS for three planting seasons in four Central American countries.
Understanding functional relations among plant traits and their modulation by growing conditions is imperative in designing selection strategies for breeding programs. This study assessed trait relationships among 196 common bean genotypes exposed to stresses for drought and field infestation of bean fly or bean stem maggot (BSM). The study was car...
Root architecture was determined together with shoot parameters under well watered and drought conditions in the field inthree soybean cultivars (A5409RG, Jackson and Prima 2000). Morphology parameters were usedto classify the cultivars into different root phenotypes that could be important in conferring drought tolerance traits. A5409RG is a droug...
Common bean (Phaseolus vulagaris L.) is mainly produced in Latin America, and Eastern and Southern Africa where seasonal rainfall is erratic and soil moisture deficit often limits its production. The objectives of this study were to identify superior advanced small red common bean lines with better grain yield under drought, and to identify plant t...
Although symbiotic nitrogen fixation (SNF) and nodule characteristics have been evaluated before, their use as phenotypic markers for drought tolerance in beans (Phaseolus vulgaris L.) and their association with aboveground traits under water deficiency have not been quantified widely. Therefore, the effect of drought stress on the association of n...
Common bean (Phaseolus vulgaris L.) is the grain legume with the highest volume of direct human consumption in the world, and is the most important legume throughout Eastern and Southern Africa, cultivated over an area of ~4 million ha. In Sub-Saharan Africa (SSA) drought is the most important production risk, potentially affecting as much as one-t...
Common bean (Phaseolus vulgaris L.) is an important food legume grown in Africa and Latin America, where water deficits frequently reduce grain yield. The objectives of this study were to identify advanced lines of common bean with superior seed yield under drought, and to identify plant traits that could serve as selection criteria for evaluating...
Common beans (Phaseolus vulgaris L.) originated in the New World and are the grain legume of greatest production for direct human consumption. Common bean production is subject to frequent droughts in highland Mexico, in the Pacific coast of Central America, in northeast Brazil, and in eastern and southern Africa from Ethiopia to South Africa. This...
Common bean (Phaseolus vulgaris L.) is the most important food legume in tropical Latin America and East and southern Africa. Beans originated in the mid-altitude neotropics with moderate soil fertility conditions. Typically, they are not well adapted to extreme climatic and edaphic environments. Climate change will alter distribution and intensity...
Common bean (Phaseolus vulgaris L.) is the most important grain legume for human consumption and drought stress affects over 60% of dry bean production worldwide. Field studies were conducted over two seasons at Centro Internacional de Agricultura Tropical (CIAT), Palmira, Colombia to (i) evaluate phenotypic differences in drought resistance; and (...
Numerous bacterial, fungal, and viral diseases cause severe damage on roots, foliage, stem, pods, and seeds, resulting in yield and quality losses in common bean (Phaseolus vulgaris L.) worldwide. Cultivars with resistance to multiple diseases are needed to reduce these losses and dependence on pesticides for disease control. Our objective was to d...
Common bean (Phaseolus vulgaris L.) breeding in the tropics and subtropics of Latin America, the Caribbean and Africa has undergone significant changes in the past two decades. Molecular markers for important disease and pest resistance traits have been created and deployed, and resistant cultivars have been introduced, especially for viral and fun...
Development of drought adapted common bean cultivars is an important strategy to improve food security and to minimize crop failure in the face of climate change. Identification of key plant traits and mechanisms that contribute to improved drought adaptation in common bean can increase the efficiency of breeding programs through selection of super...
Aims
Common bean is a major source of protein for many people worldwide. However, the crop is often subjected to drought conditions and its advantage in undertaking symbiotic nitrogen fixation can be severely decreased. The primary objective of this study was to compare the resistance of nitrogen fixation of 12 selected genotypes to soil drying.
Me...
Interspecific lines obtained from crosses between common bean (Phaseolus vulgaris L.) and other species from its secondary gene pool have a tendency for excessive vegetative growth and low grain yield. Contrariwise, drought-adapted common bean lines have been observed to produce high yields despite low shoot biomass production. This was attributed...
Climate change and global population increase are two converging forces that will jointly challenge researchers to design programs that ensure crop production systems meet the world’s food demand. Climate change will potentially reduce productivity while a global population increase will require more food. If productivity is not improved for future...
Bean species and genotypes show wide phenotypic variability in relation to aluminium (Al) resistance and progressive soil
drying. The objective of this study was to identify and characterize sources of resistance to Al toxicity and progressive
soil drying among six genotypes of common bean (Phaseolus vulgaris), four of runner bean (P. coccineus), a...
Common beans originated in the mid-altitude neotropics and typically are not well adapted to either extreme heat or drought. Climate change will alter distribution and intensity of these abiotic constraints, for example, more intense droughts could occur that adversely affect important production regions in Mexico, Central America, the Caribbean an...
Aluminium (Al) toxicity limits common bean productivity in acid soil regions of the tropics. To improve Al resistance of common bean, Al-sensitive Phaseolus vulgaris (SER16) was crossed to Al-resistant P. coccineus (G35346-3Q) to create 94 F5:6 recombinant inbred lines (RILs) of the pedigree SER16 × (SER16 × G35346-3Q). RILs were characterized for...
Abstract
Angular leaf spot (ALS) is one of the major diseases of the common bean (Phaseolus vulgaris L.). Different sources of resistance have been identified but few have been characterized. Studies were conducted to elucidate the inheritance of ALS resistance in the bean accession G10909 and to identify molecular markers linked to these genes. E...
Common bean (Phaseolus vulgaris L.), an annual diploid (2n=2x=22) species (Maréchal 1970; Delgado Salinas 1985), is adapted to mild temperatures (18°C to 35°C) and grown worldwide in a broad range of environments and in diverse production systems. Common bean is grown for its green leaves, green pods, and green and dry seeds. Dry leaves, threshed p...
Dietary protein might modulate mucin flow and intestinal mucin gene expression. Since unheated phaseolin from Phaseolus vulgaris bean is resistant to digestion and increases gut endogenous protein losses, we hypothesised that unheated phaseolin influences mucin flow and gene expression, and that phaseolin heat treatment reverses these effects. The...