Search results for "RETAMA"

showing 3 items of 3 documents

Retama species growing in different ecological-climatic areas of northeastern Algeria have a narrow range of rhizobia that form a novel phylogenetic …

2009

International audience; Sixty-seven isolates were isolated from nodules collected on roots of Mediterranean shrubby legumes Retama raetam and Retama sphaerocarpa growing in seven ecological-climatic areas of northeastern Algeria. Genetic diversity of the Retama isolates was analyzed based on genotyping by restriction fragment length polymorphism of PCR-amplified fragments of the 16S rRNA gene, the intergenic spacer (IGS) region between the 16S and 23S rRNA genes (IGS), and the symbiotic genes nifH and nodC. Eleven haplotypes assigned to the Bradyrhizobium genus were identified. Significant biogeographical differentiation of the rhizobial populations was found, but one haplotype was predomin…

PHYLOGENYClimateRETAMAMolecular Sequence DataDIVERSITYRetamaBRADYRHYZOBIUMApplied Microbiology and BiotechnologyMicrobiologyBradyrhizobiumDNA RibosomalPlant RootsRhizobia03 medical and health sciencesRNA Ribosomal 16SBotanySYMBIOTIC GENESBradyrhizobiumCladeEcology Evolution Behavior and SystematicsBradyrhizobium elkaniiEcosystemSoil Microbiology030304 developmental biology0303 health sciencesGenetic diversitybiologyPhylogenetic treeBase SequenceGeography030306 microbiologyEcologyFabaceaebiology.organism_classificationDNA FingerprintingHousekeeping gene[SDV.MP]Life Sciences [q-bio]/Microbiology and ParasitologyGenes BacterialAlgeriaDNA IntergenicMULTILOCUS SEQUENCE ANALYSIS
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Pollen morphology and seed germination studies onRetama raetamssp.gussonei, endemic subspecies from Sicily

2013

A study on pollen morphology and seed germination behaviour of Retama raetam (Forssk.) Webb ssp. gussonei (Webb) Greuter, endemic subspecies from Sicily and Calabria, is herein presented, aiming to preserve these populations strongly affected by anthropic pressure.

Retama raetamSettore BIO/02 - Botanica Sistematicaseed germinationRetama raetam ssp. gussonei ; pollen morphology; seed germination Morphology (biology)Plant ScienceBiologySubspeciesmedicine.disease_causeRetama raetam subsp. gussonei pollen morphology seed germination Sicily ItalyGerminationPollenSettore BIO/03 - Botanica Ambientale E ApplicataBotanymedicineRetama raetam ssp. gussoneipollen morphologyEcology Evolution Behavior and SystematicsPlant Biosystems - An International Journal Dealing with all Aspects of Plant Biology
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A comparison of direct and indirect methods for measuring leaf and surface areas of individual bushes

1995

Indirect estimates of leaf area from measurements with three commercially available instruments (DEMON, LAI-2000 and Sunfleck Ceptometer) were compared with directly measured areas of individual Retama sphaerocarpa bushes. The three indirect methods gave good estimates of the total surface area of individual bushes. For the DEMON, the method of log-linear averaging of transmitted radiation gave estimates closer to directly measured surface area than the method of averaging transmission linearly. For the LAI-2000, estimated surface area index multiplied by canopy projected area gave the best agreement with directly measured values. For measurements with the Sunfleck Ceptometer, values of sur…

Surface (mathematics)Diffuse radiationCanopySurface areaMeasurement methodPhysiologyProjected areaEnvironmental sciencePlant ScienceAtmospheric sciencesRetama sphaerocarpaPlant, Cell and Environment
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