Integration of physical and genetic maps of common bean through BAC-derived microsatellite markers
Department for International Development (DFID)
Abstract
Background Common bean (Phaseolus vulgaris L.) is the most important legume for direct human consumption and the goal of this study was to integrate a recently constructed physical map for the species with a microsatellite based genetic map using a BAC library from the genotype G19833 and the recombinant inbred line population DOR364 Ã? G19833. Results We searched for simple…
Race structure within the Mesoamerican gene pool of common bean (Phaseolus vulgaris L.) as determined by microsatellite markers
Department for International Development (DFID)
Abstract
Common bean (Phaseolus vulgaris L.) cultivars are distinguished morphologically, agronomically and ecologically into specific races within each of the two gene pools found for the species (Andean and Mesoamerican). The objective of this study was to describe the race structure of the Mesoamerican gene pool using microsatellite markers. A total of 60…
Genetic mapping of the bean golden yellow mosaic geminivirus resistance gene bgm-1 and linkage with potyvirus resistance in common bean (Phaseolus vulgaris L.)
Department for International Development (DFID)
Abstract
Bean golden yellow mosaic virus (BGYMV) is a whitefly-transmitted geminivirus of the Begomovirus family that causes important yield losses to common beans grown in tropical and sub-tropical countries of Latin America and the Caribbean. A major resistance gene that has been widely deployed in this region is the recessive…
Selection Mapping of Loci for Quantitative Disease Resistance in a Diverse Maize Population
Department for International Development (DFID)
Abstract
The selection response of a complex maize population improved primarily for quantitative disease resistance to northern leaf blight (NLB) and secondarily for common rust resistance and agronomic phenotypes was investigated at the molecular genetic level. A tiered marker analysis with 151 simple sequence repeat (SSR) markers in 90 individuals of the population indicated that on average…
Provitamin A Accumulation in Cassava (Manihot esculenta) Roots Driven by a Single Nucleotide Polymorphism in a Phytoene Synthase Gene
Department for International Development (DFID)
Abstract
Cassava (Manihot esculenta) is an important staple crop, especially in the arid tropics. Because roots of commercial cassava cultivars contain a limited amount of provitamin A carotenoids, both conventional breeding and genetic modification are being applied to increase their production and accumulation to fight vitamin A deficiency disorders. We…
Iron and ferritin accumulate in separate cellular locations in Phaseolus seeds
Department for International Development (DFID)
Abstract
Background: Iron is an important micronutrient for all living organisms. Almost 25% of the world population is affected by iron deficiency, a leading cause of anemia. In plants, iron deficiency leads to chlorosis and reduced yield. Both animals and plants may suffer from iron deficiency when their diet or environment lacks bioavailable iron. A sustainable way to reduce iron malnutrition in humans is…
Variation and inheritance of iron reductase activity in the roots of common bean (Phaseolus vulgaris L.) and association with seed iron accumulation QTL
Department for International Development (DFID)
Abstract
Background: Iron deficiency anemia is a global problem which often affects women and children of developing countries. Strategy I plants, such as common bean (Phaseolus vulgaris L.) take up iron through a process that involves an iron reduction mechanism in their roots; this reduction is required to convert ferric iron to…
Substantial N 2 O emissions from peat decomposition and N fertilization in an oil palm plantation exacerbated by hotspots
Center for International Forestry Research (CIFOR)
Abstract
It is unclear to what extent emissions of nitrous oxide (N2O) from drained histosols in the tropics may contribute to the atmospheric burden of greenhouse gases. In particular, there is a critical need to elucidate their magnitude in oil palm plantations on these soils. We examined spatio-temporal variations of N2O emissions from peat decomposition and…
Spatial variability of soil N2O and CO2fluxes in different topographic positions in a tropical montane forest in Kenya
Center for International Forestry Research (CIFOR)
Abstract
Quantifying and understanding the small-scale variability of nitrous oxide (N2O) and carbon dioxide (CO2) emission are essential for reporting accurate ecosystem greenhouse gas budgets. The objective of this study was to evaluate the spatial pattern of soil CO2 and N2O emissions and their relation to topography in a tropical montane forest. We measured…
Uncovering spatial patterns in the natural and human history of Brazil nut (Bertholletia excelsa) across the Amazon Basin
Bioversity International (Bioversity International)
https://hdl.handle.net/10568/70957
Abstract
Our goal was to test the hypothesis that ancient humans substantially contributed to shaping the current distribution of Brazil nut (Bertholletia excelsa), an Amazonian tree species that has been important for human livelihoods since preāColumbian times. We scrutinized the putative association…
Market?led options to scale up legume seeds in developing countries: Experiences from the Tropical Legumes Project
International Institute of Tropical Agriculture (IITA)
Abstract
There are several hurdles to ensure sustainable seed production and consistent flow of improved legume varieties in sub?Saharan Africa (SSA) and South Asia (SA). The unreliable demand, autogamous nature of most of the grain legumes, and slow variety replacement rate by smallholder farmers do not provide strong incentive for private seed companies to invest…
CIAT’s Partnership with the United States: Agricultural Research for Resilient Communities
International Center for Tropical Agriculture (CIAT)
https://hdl.handle.net/10568/80810
Publication year
2017
Authors
International Center for Tropical Agriculture
Full Citation
CIAT. 2017. CIAT’s Partnership with the United States: Agricultural Research for Resilient Communities. International Center…
CIAT’s Partnership with Germany: Reducing hunger and poverty through sustainable and climate-smart agriculture
International Center for Tropical Agriculture (CIAT)
https://hdl.handle.net/10568/80811
Publication year
2017
Authors
International Center for Tropical Agriculture
Full Citation
CIAT. 2017. CIAT’s Partnership with Germany: Reducing hunger and poverty through sustainable and climate-…
CIAT’s Partnership with the International Fund for Agricultural Development (IFAD): Guided by a shared vision for rural transformation
International Center for Tropical Agriculture (CIAT)
https://hdl.handle.net/10568/80079
Publication year
2017
Authors
International Center for Tropical Agriculture
Full Citation
CIAT. 2017. CIAT’s Partnership with the International Fund for Agricultural…
CIAT’s partnership with the International Fund for Agricultural Development (IFAD): guided by a shared vision
International Center for Tropical Agriculture (CIAT)
https://hdl.handle.net/10568/66639
Publication year
2013
Authors
International Center for Tropical Agriculture
Full Citation
CIAT. 2013. CIAT’s partnership with the International Fund for Agricultural Development (IFAD): guided by a…