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Titolo:
Correspondence analysis evaluation of linear nutrient distribution in roottips of the tropical forage Brachiaria brizantha
Autore:
Pineda-Vargas, CA; Prozesky, VM; Przybylowicz, WJ; Mayer, JE;
Indirizzi:
Groote Schuur Hosp, Dept Med, ZA-7925 Cape Town, South Africa Groote Schuur Hosp Cape Town South Africa ZA-7925 ape Town, South Africa Natl Accelerator Ctr, Mat Res Grp, ZA-7131 Faure, South Africa Natl Accelerator Ctr Faure South Africa ZA-7131 7131 Faure, South Africa Univ Stellenbosch, Grad Sch Business, ZA-7535 Bellville, South Africa UnivStellenbosch Bellville South Africa ZA-7535 Bellville, South Africa CAMBIA, Canberra, ACT, Australia CAMBIA Canberra ACT AustraliaCAMBIA, Canberra, ACT, Australia
Titolo Testata:
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
, volume: 181, anno: 2001,
pagine: 493 - 498
SICI:
0168-583X(200107)181:<493:CAEOLN>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
PROTON MICROPROBE; PIXE;
Keywords:
Brachiaria brizantha; PIXE; correspondence analysis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Pineda-Vargas, CA Groote Schuur Hosp, Dept Med, ZA-7925 Cape Town, South Africa Groote Schuur Hosp Cape Town South Africa ZA-7925 rica
Citazione:
C.A. Pineda-Vargas et al., "Correspondence analysis evaluation of linear nutrient distribution in roottips of the tropical forage Brachiaria brizantha", NUCL INST B, 181, 2001, pp. 493-498

Abstract

The technique of correspondence analysis was applied to a set of data obtained from X-ray elemental analysis by nuclear microscopy. Hydroponic experiments simulating tropical acid soil conditions were carried out to determine possible mechanisms of Al-toxicity stress on specific varieties of the genus Brachiaria, In particular the species Brachiaria brizantha was tested for gradient variation along the central cylinder of selected root tips. Single-point irradiations by nuclear microscopy gave some indication of a possible trace element profile gradient along the root axis. To be able to extrapolate the possible correlation and trace elemental concentrations gradients to a more confident level, this nuclear microscopy data obtained was analysed by correspondence analysis. A clear gradient on the plot of the firsttwo axes of the correspondence analysis was found. The correlation of Ca and Cu as well as that of K and Cl were established. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 02:33:46