12 research outputs found

    lntraspecific Variation Within the Conodont Polygnathus brevilamina

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    Intraspecific variation was observed in a study of 177 well preserved specimens of the conodont Polygnathus brevilamina. Variations in the size of platform and in the degree of ornamentation of the platform are illustrated. These variations are present in juvenile specimens. The study indicates that the original definition of Polygnathus brevilamina is too narrow and that a broader concept of speciation is needed if conodont species are to be useable

    Pearl millet genome sequence provides a resource to improve agronomic traits in arid environments

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    Pearl millet [Pennisetum glaucum (L.) R. Br., syn. Cenchrus americanus (L.) Morrone], is a staple food for over 90 million poor farmers in arid and semi-arid regions of sub-Saharan Africa and South Asia. We report the ~1.79 Gb genome sequence of reference genotype Tift 23D2B1-P1-P5, which contains an estimated 38,579 genes. Resequencing analysis of 994 (963 inbreds of the highly cross-pollinated cultigen, and 31 wild accessions) provides insights into population structure, genetic diversity, evolution and domestication history. In addition we demonstrated the use of re-sequence data for establishing marker trait associations, genomic selection and prediction of hybrid performance and defining heterotic pools. The genome wide variations and abiotic stress proteome data are useful resources for pearl millet improvement through deploying modern breeding tools for accelerating genetic gains in pearl millet.publishersversionPeer reviewe

    Pearl millet genome sequence provides a resource to improve agronomic traits in arid environments

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    International audiencePearl millet [Cenchrus americanus (L.) Morrone] is a staple food for more than 90 million farmers in arid and semi-arid regions of sub-Saharan Africa, India and South Asia. We report the ~1.79 Gb draft whole genome sequence of reference genotype Tift 23D2B1-P1-P5, which contains an estimated 38,579 genes. We highlight the substantial enrichment for wax biosynthesis genes, which may contribute to heat and drought tolerance in this crop. We resequenced and analyzed 994 pearl millet lines, enabling insights into population structure, genetic diversity and domestication. We use these resequencing data to establish marker trait associations for genomic selection, to define heterotic pools, and to predict hybrid performance. We believe that these resources should empower researchers and breeders to improve this important staple crop

    Pearl millet genome sequence provides a resource to improve agronomic traits in arid environments

    Get PDF
    International audiencePearl millet [Cenchrus americanus (L.) Morrone] is a staple food for more than 90 million farmers in arid and semi-arid regions of sub-Saharan Africa, India and South Asia. We report the ~1.79 Gb draft whole genome sequence of reference genotype Tift 23D2B1-P1-P5, which contains an estimated 38,579 genes. We highlight the substantial enrichment for wax biosynthesis genes, which may contribute to heat and drought tolerance in this crop. We resequenced and analyzed 994 pearl millet lines, enabling insights into population structure, genetic diversity and domestication. We use these resequencing data to establish marker trait associations for genomic selection, to define heterotic pools, and to predict hybrid performance. We believe that these resources should empower researchers and breeders to improve this important staple crop

    La séquençage du génome du millet perlé fournit une ressource pour améliorer les caractÚres agronomiques en milieux arides

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    International audienceAbstract Pearl millet [ Cenchrus americanus (L.) Morrone] is a staple food for more than 90 million farmers in arid and semi-arid regions of sub-Saharan Africa, India and South Asia. We report the ∌1.79 Gb draft whole genome sequence of reference genotype Tift 23D 2 B 1 -P1-P5, which contains an estimated 38,579 genes. We highlight the substantial enrichment for wax biosynthesis genes, which may contribute to heat and drought tolerance in this crop. We resequenced and analyzed 994 pearl millet lines, enabling insights into population structure, genetic diversity and domestication. We use these resequencing data to establish marker trait associations for genomic selection, to define heterotic pools, and to predict hybrid performance. We believe that these resources should empower researchers and breeders to improve this important staple crop.Le millet perlĂ© [Cenchrus americanus (L.) Morrone, syn. Pennisetum glaucum] est un aliment de base pour plus de 90 millions d'agriculteurs dans les rĂ©gions arides et semi-arides de l'Afrique subsaharienne, de l'Inde et de l'Asie du Sud. Nous rendons compte des rĂ©sultats du projet de sĂ©quençage du gĂ©nome entier de ~1.79 Gb du gĂ©notype de rĂ©fĂ©rence Tift 23D2B1-P1-P5 contenant environ 38.579 gĂšnes. Nous soulignons l'enrichissement substantiel en gĂšnes de biosynthĂšse de la cire, qui peuvent contribuer Ă  la tolĂ©rance Ă  la chaleur et Ă  la sĂ©cheresse de cette cĂ©rĂ©ale. Nous avons resĂ©quencĂ© et analysĂ© 994 lignĂ©es de millet perlĂ©, ce qui nous a permis de mieux apprĂ©hender la structure des populations, la diversitĂ© gĂ©nĂ©tique et le processus de domestication. Nous utilisons ces donnĂ©es de resĂ©quençage pour Ă©tablir des associations de marqueurs utiles Ă  la sĂ©lection gĂ©nomique, pour dĂ©finir des pools hĂ©tĂ©rotiques et pour prĂ©dire la performance des hybrides. Nous pensons que ces ressources devraient permettre aux chercheurs et aux sĂ©lectionneurs d'amĂ©liorer les performances de cette agriculture vivriĂšre

    La séquençage du génome du millet perlé fournit une ressource pour améliorer les caractÚres agronomiques en milieux arides

    No full text
    International audienceAbstract Pearl millet [ Cenchrus americanus (L.) Morrone] is a staple food for more than 90 million farmers in arid and semi-arid regions of sub-Saharan Africa, India and South Asia. We report the ∌1.79 Gb draft whole genome sequence of reference genotype Tift 23D 2 B 1 -P1-P5, which contains an estimated 38,579 genes. We highlight the substantial enrichment for wax biosynthesis genes, which may contribute to heat and drought tolerance in this crop. We resequenced and analyzed 994 pearl millet lines, enabling insights into population structure, genetic diversity and domestication. We use these resequencing data to establish marker trait associations for genomic selection, to define heterotic pools, and to predict hybrid performance. We believe that these resources should empower researchers and breeders to improve this important staple crop.Le millet perlĂ© [Cenchrus americanus (L.) Morrone, syn. Pennisetum glaucum] est un aliment de base pour plus de 90 millions d'agriculteurs dans les rĂ©gions arides et semi-arides de l'Afrique subsaharienne, de l'Inde et de l'Asie du Sud. Nous rendons compte des rĂ©sultats du projet de sĂ©quençage du gĂ©nome entier de ~1.79 Gb du gĂ©notype de rĂ©fĂ©rence Tift 23D2B1-P1-P5 contenant environ 38.579 gĂšnes. Nous soulignons l'enrichissement substantiel en gĂšnes de biosynthĂšse de la cire, qui peuvent contribuer Ă  la tolĂ©rance Ă  la chaleur et Ă  la sĂ©cheresse de cette cĂ©rĂ©ale. Nous avons resĂ©quencĂ© et analysĂ© 994 lignĂ©es de millet perlĂ©, ce qui nous a permis de mieux apprĂ©hender la structure des populations, la diversitĂ© gĂ©nĂ©tique et le processus de domestication. Nous utilisons ces donnĂ©es de resĂ©quençage pour Ă©tablir des associations de marqueurs utiles Ă  la sĂ©lection gĂ©nomique, pour dĂ©finir des pools hĂ©tĂ©rotiques et pour prĂ©dire la performance des hybrides. Nous pensons que ces ressources devraient permettre aux chercheurs et aux sĂ©lectionneurs d'amĂ©liorer les performances de cette agriculture vivriĂšre

    La séquençage du génome du millet perlé fournit une ressource pour améliorer les caractÚres agronomiques en milieux arides

    No full text
    International audienceAbstract Pearl millet [ Cenchrus americanus (L.) Morrone] is a staple food for more than 90 million farmers in arid and semi-arid regions of sub-Saharan Africa, India and South Asia. We report the ∌1.79 Gb draft whole genome sequence of reference genotype Tift 23D 2 B 1 -P1-P5, which contains an estimated 38,579 genes. We highlight the substantial enrichment for wax biosynthesis genes, which may contribute to heat and drought tolerance in this crop. We resequenced and analyzed 994 pearl millet lines, enabling insights into population structure, genetic diversity and domestication. We use these resequencing data to establish marker trait associations for genomic selection, to define heterotic pools, and to predict hybrid performance. We believe that these resources should empower researchers and breeders to improve this important staple crop.Le millet perlĂ© [Cenchrus americanus (L.) Morrone, syn. Pennisetum glaucum] est un aliment de base pour plus de 90 millions d'agriculteurs dans les rĂ©gions arides et semi-arides de l'Afrique subsaharienne, de l'Inde et de l'Asie du Sud. Nous rendons compte des rĂ©sultats du projet de sĂ©quençage du gĂ©nome entier de ~1.79 Gb du gĂ©notype de rĂ©fĂ©rence Tift 23D2B1-P1-P5 contenant environ 38.579 gĂšnes. Nous soulignons l'enrichissement substantiel en gĂšnes de biosynthĂšse de la cire, qui peuvent contribuer Ă  la tolĂ©rance Ă  la chaleur et Ă  la sĂ©cheresse de cette cĂ©rĂ©ale. Nous avons resĂ©quencĂ© et analysĂ© 994 lignĂ©es de millet perlĂ©, ce qui nous a permis de mieux apprĂ©hender la structure des populations, la diversitĂ© gĂ©nĂ©tique et le processus de domestication. Nous utilisons ces donnĂ©es de resĂ©quençage pour Ă©tablir des associations de marqueurs utiles Ă  la sĂ©lection gĂ©nomique, pour dĂ©finir des pools hĂ©tĂ©rotiques et pour prĂ©dire la performance des hybrides. Nous pensons que ces ressources devraient permettre aux chercheurs et aux sĂ©lectionneurs d'amĂ©liorer les performances de cette agriculture vivriĂšre

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    No full text
    Not AvailablePearl millet [Cenchrus americanus (L.) Morrone] is a staple food for more than 90 million farmers in arid and semi-arid regions of sub-Saharan Africa, India and South Asia. We report the ~1.79 Gb draft whole genome sequence of reference genotype Tift 23D2B1-P1-P5, which contains an estimated 38,579 genes. We highlight the substantial enrichment for wax biosynthesis genes, which may contribute to heat and drought tolerance in this crop. We resequenced and analyzed 994 pearl millet lines, enabling insights into population structure, genetic diversity and domestication. We use these resequencing data to establish marker trait associations for genomic selection, to define heterotic pools, and to predict hybrid performance. We believe that these resources should empower researchers and breeders to improve this important staple crop.Not Availabl
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