A5076103259- Rice Cultivation and Yield Improvement
- Sugarcane Cultivation and Processing
- Agriculture and Rural Development Research
- Genetic Mapping and Diversity in Plants and Animals
- Plant Disease Resistance and Genetics
- Biofuel production and bioconversion
- Agricultural Systems and Practices
- Genetics and Plant Breeding
- Plant Pathogenic Bacteria Studies
- Plant Pathogens and Fungal Diseases
- Natural Products and Biological Research
- Banana Cultivation and Research
- Cocoa and Sweet Potato Agronomy
- Wheat and Barley Genetics and Pathology
- GABA and Rice Research
- Soil Carbon and Nitrogen Dynamics
- Agronomic Practices and Intercropping Systems
- Food Chemistry and Fat Analysis
- Cassava research and cyanide
- Plant Virus Research Studies
- Genetic and phenotypic traits in livestock
- Plant Parasitism and Resistance
- Biological Control of Invasive Species
- Agricultural Innovations and Practices
- Plant nutrient uptake and metabolism
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
2011-2024
Agro-écologie et intensification durable des cultures annuelles
2014-2024
Institut de l'Environnement et Recherches Agricoles
2022-2024
Université de Montpellier
2018-2023
Agroécologie
2014-2022
Agropolis International
2014-2021
Genetic Improvement and Adaptation of Mediterranean and Tropical Plants
2015-2018
Centre National de la Recherche Appliquée au Developpement Rural
2012-2014
Peuplements végétaux et bioagresseurs en milieu tropical
2012
Institute of Plant Protection
2003
Rice blast is one of the most damaging disease rice. The use resistant cultivars only practical way to control in developing countries where farmers cannot afford fungicides. However resistance often breaks down. Genome wide association studies (GWAS) allow high resolution exploration rice genetic diversity for quantitative and qualitative alleles that can be combined breeding programs achieve durability. We undertook a GWAS using tropical japonica panel 150 accessions genotyped with 10,937...
The effect of two‐component rice cultivar mixtures on the control blast disease was studied in three different experiments under rainfed upland conditions Madagascar Highlands. involved a susceptible (either or very susceptible) and resistant mixture arrangements (random row mixtures) with proportions (50, 20 16·7%), which were compared to grown pure stand. these incidence severity leaf panicle measured weekly, yield components at harvest time. more efficient reducing proportion 16·7%...
With 1 figure and table Abstract The yellow leaf disease of sugarcane is distributed worldwide causes important yield losses. This caused by a member the Luteoviridae family, Sugarcane virus (SCYLV). objective this study was to characterize genetic factors for resistance in clone resistant infection SCYLV. We analysed progeny 196 clones obtained from cross between susceptible cultivar ‘R570’ ‘MQ76‐53’. assessed incidence using tissue‐blot immunoassay after 10 years cultivation under natural...
Low night and high day temperatures during sensitive reproductive stages cause spikelet sterility in rice. Phenotyping of tolerance traits the field is difficult because temporal interactions with phenology organ temperature differing from ambient. Physiological models can be used to separate these effects. A 203-accession indica rice diversity panel was phenotyped for ten environments Senegal Madagascar climate data were recorded. Here we report on responses while a companion study reported...
Genome-wide association study (GWAS) was performed for 16 agronomic traits including nitrogen use efficiency (NUE) and yield-related components using a panel of 190 mainly japonica rice varieties set 38 390 single nucleotide polymorphism (SNP) markers. This evaluated under rainfed upland conditions in Madagascar two consecutive cropping seasons with contrasted input levels. Using another five grain traits, we identified previously known genes (GW5, GS3, Awn1 Glabrous1), thus validating the...
Phenology and time of flowering are crucial determinants rice adaptation to climate variation. A previous study characterized responses 203 diverse indica rices (the ORYTAGE panel) ten environments in Senegal (six sowing dates) Madagascar (two years two altitudes) under irrigation the field. This used physiological phenology model RIDEV V2 heuristically estimate component traits such as cardinal temperatures (base temperature (Tbase) optimum temperature), basic vegetative phase, photoperiod...
Bacterial leaf streak (BLS) caused by Xanthomonas oryzae pv. oryzicola is an important disease of rice. BLS prevalent in Asia and West Africa, where it was first reported Nigeria Senegal the early 1980s (4). Recently, molecular analysis strains from Mali (2) Burkina Faso (5) further confirmed presence Africa. In Madagascar, symptoms were Buddenhagen but causal agent not unequivocally determined (1). To confirm Buddenhagen's observations using modern typing tools, we surveyed several rice...
Le riz est l’aliment de base des Malgaches. Mais, sur les Hautes Terres Madagascar, très fortement peuplées, rizières ne permettent plus couvrir besoins en riz. Un programme création variétale a été initié 1984 par le FOFIFA et CIRAD qui abouti à la variétés pluvial adaptées l’altitude. Ces ont permis développement rapide riziculture pluviale jusqu’à 1800 m d’altitude. Une étude l’impact ces recherches réalisée avec méthodologie « IMPRESS » (IMPact REchercheS au Sud) du se focalise...
Abstract Phenomic prediction (PP), a novel approach utilizing Near Infrared Spectroscopy (NIRS) data, offers an alternative to genomic (GP) for breeding applications. In PP, hyperspectral relationship matrix replaces the matrix, potentially capturing both additive and non-additive genetic effects. While PP boasts advantages in cost throughput compared GP, factors influencing its accuracy remain unclear need be defined. This study investigated impact of various factors, namely training...
Understanding the dynamics of agrobiodiversity is essential to development conservation and valorisation strategies. The rice varietal diversity in Vakinankaratra region Madagascar was assessed through individual group surveys, as well collection characterization samples cultivated varieties on 1,050 farms located 32 villages. Average numbers used per village (10.9) farm (2.2) are comparable with other traditional agrosystems, though large regional variability observed. main determinants...