The genetic improvement of economically important production traits of dry bean (Phaseolus vulgar... more The genetic improvement of economically important production traits of dry bean (Phaseolus vulgaris L.), for geographic regions where production is threatened by drought and high temperature stress, is challenging because of the complex genetic nature of these traits. Large scale SNP data sets for the two major gene pools of bean, Andean and Middle American, were developed by mapping multiple pools of genotype-by-sequencing reads and identifying over 200k SNPs for each gene pool against the most recent assembly of the P. vulgaris genome sequence. Moderately sized Bean Abiotic Stress Evaluation (BASE) panels, consisting of genotypes appropriate for production in Central America and Africa, were assembled. Phylogenetic analyses demonstrated the BASE populations represented broad genetic diversity for the appropriate races within the two gene pools. Joint mixed linear model genome-wide association studies with data from multiple locations discovered genetic factors associated with four...
Seed colors and color patterns are critical for the survival of wild plants and the consumer appe... more Seed colors and color patterns are critical for the survival of wild plants and the consumer appeal of crops. In common bean, a major global staple, these patterns are also critical for determining market classes, yet the genetic and environmental control of many pigmentation patterns remains unresolved. In this study, we genetically mapped variation for three important seed pattern loci, T, Bip, and phbw, which co-segregated completely with PvTTG1, PvMYC1, and PvTT8, respectively. Proteins encoded by these genes are predicted to work together in MYB-bHLH-WD40 (MBW) complexes, propagating flavonoid biosynthesis across the seed coat. Whole-genome sequencing of 37 diverse accessions identified putative mutations in each gene, including seven unique parallel mutations in T (PvTTG1) and a non-synonymous SNP in a conserved residue in bipana (PvMYC1). A 612 bp intron deletion in phbw (PvTT8) eliminated motifs conserved since the origins of the Papilionoidea and corresponded to a 20-fold r...
Um ensaio foi conduzido no campo experimental do Centro Internacional da Batata (CIP), localizado... more Um ensaio foi conduzido no campo experimental do Centro Internacional da Batata (CIP), localizado em Nwalate, no distrito de Boane, entre Outubro de 2015 a Marco de 2016 com objectivo de avaliar o efeito da adubacao potassica no rendimento e qualidade de variedades de Batata-doce de Polpa Alaranjada (BDPA) ( Ipomoea batatas (L.) Lam). O delineamento experimental usado foi em Blocos Completamente Casualizados (DBCC) num arranjo de talhoes subdivididos com quatro (4) repeticoes consistindo de cinco (5) variedades de BDPA (Delvia, Erica, Lourdes, Irene e Gloria), alocadas nos talhoes principais e quatro doses de potassio (0, 50, 100 e 150 kg.ha -1 ) alocadas nos sub-talhoes. Os parâmetros medidos foram: rendimento, teores de β-caroteno, materia seca (MS), amido, acucares redutores e proteina. As variedades Erica e Lourdes foram as que obtiveram maiores rendimentos de batata comercial em todas as doses de K 2 O aplicadas, tendo-se alcancado o maximo de produtividade quando foram aplicad...
Specialization in systems approach to organizational analysis, planning and management. MBA, the ... more Specialization in systems approach to organizational analysis, planning and management. MBA, the Indian Institute of Management, Ahmedabad, 1971. Major in organizational behaviour and human resource management. Experience: Recent clients include the World Bank, FAO, WHO, Islamic Development Bank, and the Global Water Partnership. Prior to this, he worked for over twenty years in the World Bank and the CGIAR, retiring in 2001 as adviser. At the CGIAR Secretariat, he undertook or facilitated comprehensive assessments (EPMRs) of the governance, strategy, programs, organization, and management of twelve of the fifteen CGIAR-supported international agricultural research Centers; and served as member of the CGIAR gender and diversity advisory board, and of various CGIAR task forces and working groups. At ISNAR, he served as Chair of HRM working group and head of training program; and led a research project on the organization and structure of national agricultural research systems in developing countries. He has undertaken work-related travel to over thirty developing countries.
The genetic improvement of economically important production traits of dry bean (Phaseolus vulgar... more The genetic improvement of economically important production traits of dry bean (Phaseolus vulgaris L.), for geographic regions where production is threatened by drought and high temperature stress, is challenging because of the complex genetic nature of these traits. Large scale SNP data sets for the two major gene pools of bean, Andean and Middle American, were developed by mapping multiple pools of genotype-by-sequencing reads and identifying over 200k SNPs for each gene pool against the most recent assembly of the P. vulgaris genome sequence. Moderately sized Bean Abiotic Stress Evaluation (BASE) panels, consisting of genotypes appropriate for production in Central America and Africa, were assembled. Phylogenetic analyses demonstrated the BASE populations represented broad genetic diversity for the appropriate races within the two gene pools. Joint mixed linear model genome-wide association studies with data from multiple locations discovered genetic factors associated with four...
Seed colors and color patterns are critical for the survival of wild plants and the consumer appe... more Seed colors and color patterns are critical for the survival of wild plants and the consumer appeal of crops. In common bean, a major global staple, these patterns are also critical for determining market classes, yet the genetic and environmental control of many pigmentation patterns remains unresolved. In this study, we genetically mapped variation for three important seed pattern loci, T, Bip, and phbw, which co-segregated completely with PvTTG1, PvMYC1, and PvTT8, respectively. Proteins encoded by these genes are predicted to work together in MYB-bHLH-WD40 (MBW) complexes, propagating flavonoid biosynthesis across the seed coat. Whole-genome sequencing of 37 diverse accessions identified putative mutations in each gene, including seven unique parallel mutations in T (PvTTG1) and a non-synonymous SNP in a conserved residue in bipana (PvMYC1). A 612 bp intron deletion in phbw (PvTT8) eliminated motifs conserved since the origins of the Papilionoidea and corresponded to a 20-fold r...
Um ensaio foi conduzido no campo experimental do Centro Internacional da Batata (CIP), localizado... more Um ensaio foi conduzido no campo experimental do Centro Internacional da Batata (CIP), localizado em Nwalate, no distrito de Boane, entre Outubro de 2015 a Marco de 2016 com objectivo de avaliar o efeito da adubacao potassica no rendimento e qualidade de variedades de Batata-doce de Polpa Alaranjada (BDPA) ( Ipomoea batatas (L.) Lam). O delineamento experimental usado foi em Blocos Completamente Casualizados (DBCC) num arranjo de talhoes subdivididos com quatro (4) repeticoes consistindo de cinco (5) variedades de BDPA (Delvia, Erica, Lourdes, Irene e Gloria), alocadas nos talhoes principais e quatro doses de potassio (0, 50, 100 e 150 kg.ha -1 ) alocadas nos sub-talhoes. Os parâmetros medidos foram: rendimento, teores de β-caroteno, materia seca (MS), amido, acucares redutores e proteina. As variedades Erica e Lourdes foram as que obtiveram maiores rendimentos de batata comercial em todas as doses de K 2 O aplicadas, tendo-se alcancado o maximo de produtividade quando foram aplicad...
Specialization in systems approach to organizational analysis, planning and management. MBA, the ... more Specialization in systems approach to organizational analysis, planning and management. MBA, the Indian Institute of Management, Ahmedabad, 1971. Major in organizational behaviour and human resource management. Experience: Recent clients include the World Bank, FAO, WHO, Islamic Development Bank, and the Global Water Partnership. Prior to this, he worked for over twenty years in the World Bank and the CGIAR, retiring in 2001 as adviser. At the CGIAR Secretariat, he undertook or facilitated comprehensive assessments (EPMRs) of the governance, strategy, programs, organization, and management of twelve of the fifteen CGIAR-supported international agricultural research Centers; and served as member of the CGIAR gender and diversity advisory board, and of various CGIAR task forces and working groups. At ISNAR, he served as Chair of HRM working group and head of training program; and led a research project on the organization and structure of national agricultural research systems in developing countries. He has undertaken work-related travel to over thirty developing countries.
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