Oryza Glaberrima
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. A walk on the wild side: Oryza species as source for rice abiotic stress tolerance
Abstract Oryza sativa, the common cultivated rice, is one of the most important crops for human consumption, but production is increasingly threatened by abiotic stresses. Although many efforts have resulted in breeding rice cultivars that are relatively tolerant to their local environments, climate changes and population increase are expected to soon call f
Genet. Mol. Biol.. Publicado em: 20/03/2017
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2. Infrared thermometry for drought phenotyping of inter and intra specific upland rice lines.
Propôs-se avaliar, no presente estudo, a técnica da termometria ao infravermelho na caracterização de linhagens interespecíficas (Oryza glaberrima x Oryza sativa cv Caiapó) e intraespecíficas de arroz para tolerância a seca. O experimento, conduzido em Porangatu, GO, foi submetido a condições adequadas de umidade no solo até 30 dias após a emerg�
Revista Brasileira de Engenharia Agrícola e Ambiental. Publicado em: 2011
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3. Termometria infravermelha na fenotipagem para resistência à seca de linhagens inter e intraespecíficas de arroz
Propôs-se avaliar, no presente estudo, a técnica da termometria ao infravermelho na caracterização de linhagens interespecíficas (Oryza glaberrima x Oryza sativa cv Caiapó) e intraespecíficas de arroz para tolerância a seca. O experimento, conduzido em Porangatu, GO, foi submetido a condições adequadas de umidade no solo até 30 dias após a emerg�
Revista Brasileira de Engenharia Agrícola e Ambiental. Publicado em: 2010-02
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4. Caracterização morfoagronômica de acessos de arroz (Oryza sativa L.) de terras altas.
Rice is the primary food source in many developing countries in the world, primarily for those located in Asian. The Oryza genus has 24 species, but only two are cultivated: O. glaberrima Steud. in the West of Africa and O. sativa L. in all part of the world. Those species are naturally hydrophytes, however the evolutionary process they become adapted for ma
Publicado em: 2008
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5. Rice genetic resources (Oryza sativa L.) in southern Brazil. / Recursos genéticos de arroz (Oryza sativa L.) no sul do Brasil.
A ampla adaptabilidade do arroz, aliada ao continuado esforço da pesquisa no mundo, assegura que o seu grão permaneça sendo um importante produto de consumo pelo homem. A influência da seleção natural resultou em uma ampla diversidade encontrada no gênero Oryza, que, atualmente, é composta por 23 espécies. No entanto, apenas O. sativa L. (arroz cult
Publicado em: 2007
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6. Procurando um arroz c4 mediante exame anatômico foliar
A possibilidade de se encontrar genótipos de arroz, gramínea C3, com características anatômico-foliares semelhantes às gramíneas C4 levou ao presente estudo. Genótipos com características C4 seriam superiores fotossinteticamente, mais adaptados ao estresse ambiental e mais produtivos. Nesta pesquisa foi observada a anatomia foliar de 483 exemplares d
Revista Brasileira de Fisiologia Vegetal. Publicado em: 2000
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7. African rice (Oryza glaberrima): History and future potential
The African species of rice (Oryza glaberrima) was cultivated long before Europeans arrived in the continent. At present, O. glaberrima is being replaced by the introduced Asian species of rice, Oryza sativa. Some West African farmers, including the Jola of southern Senegal, still grow African rice for use in ritual contexts. The two species of rice have rec
National Academy of Sciences.
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8. The Distribution and Effects of Genes Causing F1 Weakness in ORYZA BREVILIGULATA and O. GLABERRIMA
Weakness of F1 plants is frequently found in hybrids between strains of Oryza breviligulata (wild) and O. glaberrima (cultivated rice) endemic to West Africa. A set of two complementary dominant weakness genes, W1 and W2, was found to control the observed F1 weakness. Many breviligulata strains had W1, while most of the glaberrima and semi-wild strains had W
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9. The Genic Nature of Gamete Eliminator in Rice
The two cultivated rice species, Oryza sativa and Oryza glaberrima, are morphologically alike but are reproductively isolated from each other by hybrid sterility. The hybrid is male sterile but partially female fertile. Backcross experiments were conducted to introduce an alien factor controlling hybrid sterility from O. glaberrima (W025) into O. sativa (T65
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10. Photosynthetic Bradyrhizobia Are Natural Endophytes of the African Wild Rice Oryza breviligulata
We investigated the presence of endophytic rhizobia within the roots of the wetland wild rice Oryza breviligulata, which is the ancestor of the African cultivated rice Oryza glaberrima. This primitive rice species grows in the same wetland sites as Aeschynomene sensitiva, an aquatic stem-nodulated legume associated with photosynthetic strains of Bradyrhizobi
American Society for Microbiology.
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11. Experimental Studies on the Origin of Cultivated Rice
1) Contributions to the origin of cultivated rice made by the author and his colleagues were briefly reviewed under several headlines.—2) Two parallel series of evolution of cultivated species, the Asian form of Oryza perennis to O. sativa and O. breviligulata to O. glaberrima, were pointed out compared.—3) In both the two series, a continuous array of i
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12. Rapid recent growth and divergence of rice nuclear genomes
By employing the nuclear DNA of the African rice Oryza glaberrima as a reference genome, the timing, natures, mechanisms, and specificities of recent sequence evolution in the indica and japonica subspecies of Oryza sativa were identified. The data indicate that the genome sizes of both indica and japonica have increased substantially, >2% and >6%, respectiv
National Academy of Sciences.