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Registros recuperados: 6
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Chemicals involved in honeybee-sunflower relationship Inra
Pham-Delegue, M.H.; Etievant, P.; Guichard, E.; Marilleau, R.; Douault, P.H.; Chauffaille, J.; Masson, C..
We present a review of work on the plant chemicals involved in the honeybee-sunflower model system. Combined behavioral and chemical analyses were conducted under natural and controlled conditions. First the distribution of forager bees'' visits on two pairs of sunflower genotypes producing a different level of hybrid seed yield was recorded under pollen-proof tunnels. Mirasol parental lines producing high seed yields were visited at random, whereas forager bees visited preferentially the female parental line of Marianne, resulting in low seed yield. Nectar samples collected on the genotypes were analyzed by gas chromatography. Fructose, glucose, and sucrose were identified. Parental lines of Mirasol showed similar sugar profiles, whereas the female line...
Tipo: Journal Article Palavras-chave: APIS MELLIFERA; APIDAE; HYMENOPTERA; INTERACTION ANIMAL VEGETAL; NECTAR; APPROVISIONNEMENT SUNFLOWER; HELIANTHUS ANNUUS; HONEYBEE; APIS MELLIFERA; HYMENOPTERA; APIDAE; FORAGING BEHAVIOR; AROMA; NECTAR; PLANT CHEMICALS; CONDITIONING; OLFACTORY DISCRIMINATION; POLLINATION.
Ano: 1990 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9100021114021131&uri=/notices/prodinra1/2010/11/
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Efficience comparée de l'eau transpirée par le maïs, le tournesol et le riz IRD
Moutonnet, P.; Bois, Jean-François.
Tipo: Text Palavras-chave: ELABORATION DU RENDEMENT; PHOTOSYNTHESE; TRANSPIRATION; EXPERIMENTATION; MODELE MATHEMATIQUE; ZEA MAYS; HELIANTHUS ANNUUS; ORYZA SATIVA.
Ano: 1982 URL: http://www.documentation.ird.fr/hor/fdi:15813
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Floret initiation, tissue expansion and carbon availability at the meristem of the sunflower capitulum as affected by water or light deficits Inra
Dosio, G.A.A.; Tardieu, F.; Turc, O..
The co-ordination between floret initiation and meristem expansion, and their relationships with carbon availability, were studied and quantified in sunflower (Helianthus annuus) plants subjected to light or water shortages.Meristem size, number of floret primordia, primordium size, rate of plant biomass accumulation, leaf area, photosynthetic rate, and soluble sugar content in the capitulum were measured until completion of floret initiation.Although treatments differentially affected tissue expansion and biomass acquisition, a common relationship between the final number of florets and the rate and duration of meristem expansion was conserved. In the absence of water deficit, changes in relative expansion rate in the meristem paralleled changes in...
Tipo: Journal Article Palavras-chave: CARBON AVAILABILITY; FLORET INITIATION; HELIANTHUS ANNUUS; SUNFLOWER; MERISTEM; SUNFLOWER CAPITULUM; TISSUE EXPANSION RATE; WATER DEFICIT.
Ano: 2011 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011e12d5c13&uri=/notices/prodinra1/2011/01/
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Périodicité journalière du flux de sève et transport ascendant du potassium (Helianthus annuus L. et Lycopersicum racemigerum Lange) IRD
Monard, J.F.; Couderchet, J.; Scheidecker, Danielle; Heller, R..
Tipo: Text Palavras-chave: POTASSIUM; PHOTOPERIODICITE; FLUX; TRANSPORT; ELEMENT MINERAL; HELIANTHUS ANNUUS; LYCOPERSICUM RACEMIGERUM; SEVE.
Ano: 1976 URL: http://www.documentation.ird.fr/hor/fdi:09421
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Resposta oxidativa de dois genotipos de girassol cultivados em duas microrregiões do Rio Grande do Norte. Repositório Alice
DANTAS, C. V. S.; MELO, Y. L.; BEZERRA, L. L.; DÍAZ-LOPEZ, L.; ORTEGA, E.; MAIA, J. M.; MACEDO, C. E. C. de.
2012
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: FISIOLOGIA; GIRASSOL; HELIANTHUS ANNUUS; ESTRESSE OXIDATIVO; ESTRESSE IÔNICO; DÉFICIT HÍDRICO.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/937043
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Sur les stérols des pollens National Institute of Agronomic Research
Devys, Michel; Barbier, Michel.
Les stérols des pollens de deux composées, le tournesol Helianthus annuus, et le pissenlit Taraxacum dens-leonis, ont été analysés par spectrométrie de masse; le béta-sitostérol est le principal constituant. Le cycloarténol a été isolé d'un pollen de pommier Pyrus malus ainsi que d'un pollen de saule Salix sp.; le lanostérol n'est pas décelable dans ces deux pollens. La signification biologique de ces nouveaux résultats est discutée.
Tipo: Journal Article-postprint Palavras-chave: POLLEN; HELIANTHUS ANNUUS; TARAXACUM DENS-LEORIS; PYRUS MALUS; SALIX; BIOCHEMISTRY; STEROL; MASS SPECTROMETRY; BIOCHIMIE; SPECTROMETRIE DE MASSE.
Ano: 1967 URL: http://hdl.handle.net/2174/345
Registros recuperados: 6
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