A5048264299- Rice Cultivation and Yield Improvement
- Genetic Mapping and Diversity in Plants and Animals
- GABA and Rice Research
- Genetics and Plant Breeding
- Plant responses to water stress
- Plant Micronutrient Interactions and Effects
- Plant Physiology and Cultivation Studies
- Agricultural pest management studies
- Hydrology and Watershed Management Studies
- Agriculture, Soil, Plant Science
- Seed and Plant Biochemistry
- Ecology and Conservation Studies
- Peanut Plant Research Studies
- Genomics and Phylogenetic Studies
- Soil and Water Nutrient Dynamics
- Banana Cultivation and Research
- Genetic and phenotypic traits in livestock
- Animal Genetics and Reproduction
- Ecology, Conservation, and Geographical Studies
- Genetic and Environmental Crop Studies
- Phosphorus and nutrient management
- Wheat and Barley Genetics and Pathology
- Agricultural Science and Fertilization
- Biofuel production and bioconversion
- Molecular Biology Techniques and Applications
International Rice Research Institute
2007-2024
Africa Rice Center
2011-2021
International Institute of Tropical Agriculture
2015-2017
International Crops Research Institute for the Semi-Arid Tropics
2011-2013
World Vegetable Center
2009
University of Agricultural Sciences, Bangalore
2002-2007
ABSTRACT Genetic control of yield under reproductive‐stage drought stress was studied in a population 436 random F 3 –derived lines from cross between the upland rice ( Oryza sativa L.) cultivars Vandana and Way Rarem. Screening conducted conditions at IRRI during dry seasons 2005 2006. Lines were evaluated nonstress trials both years to identify QTL contributing resistance. For detection, set highest lowest‐yielding genotyped by 126 SSR markers. A qtl12.1 ) with large effect on grain...
ABSTRACT Drought is a major cause of yield loss in rain-fed rice (Oryza sativa L.), grown on over 40 million ha Asia. The objective this study was to evaluate the effectiveness direct selection for under drought stress upland populations derived from crosses between irrigated high-yielding cultivars and upland-adapted cultivars. Random F2:4 lines five were screened grain fully lowland fields nonstress conditions uplands severe reproductive-stage stress. Stress caused mean reduction 64%...
Abstract Crop landraces have unique local agroecological and societal functions offer important genetic resources for plant breeding. Recognition of the value landrace diversity concern about its erosion on farms led to sustained efforts establish ex situ collections worldwide. The degree which these succeeded in conserving has not been comprehensively assessed. Here we modelled potential distributions eco-geographically distinguishable groups 25 cereal, pulse starchy root/tuber/fruit crops...
:In sub-Saharan Africa, the demand for higher rice production continues to grow rapidly. Although there is a huge potential increasing through expansion of cultivation area in wetlands, iron (Fe) toxicity tends occur and consequently results low yield. Development deployment varieties tolerant Fe one practical options overcome this constraint. Several have been developed conventional breeding but progress has generally slow mainly due large genotype × environment interaction field...
The objective of this study was to assess the reliability pot-based screening method for iron (Fe) toxicity tolerance in rice using soils from hot spots. Five lowland varieties with known reaction Fe were grown pots a screen house three seasons. Fe-toxic two spot fields – Edozighi, Nigeria and Niaouli, Benin used soil Africa Rice Center (AfricaRice) experimental farm, Cotonou, included as control. Leaf bronzing score (LBS) determined at different stages, grain yield maturity. Heritability...
The international collections of plant genetic resources for food and agriculture (PGRFA) hosted by 11 CGIAR Centers are important components the United Nations Food Agriculture Organization's global system conservation use PGRFA. They also play an supportive role in realizing Target 2.5 Sustainable Development Goals. This paper analyzes genebanks' trends acquiring distributing PGRFA over last 35 years, with a particular focus on decade. highlights number factors influencing Centers'...
Iron (Fe) toxicity is recognized as one of the most widely spread soil constraints for rice production especially in West Africa. Oryza glaberrima cultivated species that originated from Africa well-adapted to its growing ecologies. The aim this study was identify promising O. accessions tolerant Fe 2106 held at AfricaRice gene bank. screenings were conducted over a four-year period and involved evaluating entries under Fe-toxic field conditions Africa, selecting good yielding repeating...
More than 60% of phosphorus (P) taken up by rice (Oryza spp) is accumulated in the grains at harvest and hence exported from fields, leading to a continuous removal P. If P removed fields not replaced inputs then soil stocks decline, with consequences for subsequent crops. Breeding genotypes low concentration could be strategy reduce maintenance fertilizer needs slow depletion input systems. This study aimed assess variation grain concentrations among across diverse environments evaluate...
Increasing rice demand is one of the consequences steadily improving socio-economic status African countries. New Rice for Africa (NERICA), which are interspecific hybrids between Asian and varieties, successful breeding products utilizing biodiversity across two different crop species. Upland NERICA varieties (NU) exhibit agronomic traits value harsh eco-geography, including shorter duration, higher yield stress tolerance, compared to local varieties. However, molecular basis in NU largely...
Understanding the genetics of field-based tolerance to high iron-associated (HIA) stress in rice can accelerate development new varieties with enhanced yield performance West African lowland ecosystems. To date, few studies have been undertaken rigorously evaluate under HIA conditions. In this study, two NERICA × O. sativa bi-parental populations and one O.sativa diversity panel consisting 296 accessions were evaluated for grain leaf bronzing symptoms over multiple years four control sites....