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Titolo:
STUDY OF THE NUTRIENT DISTRIBUTION IN ROOT-TIPS OF THE TROPICAL FORAGE BRACHIARIA
Autore:
PINEDA CA; WENZL P; MAYER J; MESJASZPRZYBYLOWICZ J; PRZYBYLOWICZ WJ; PROZESKY VM;
Indirizzi:
GROOTE SCHUUR HOSP ZA-7925 OBSERVATORY CAPE TOWN SOUTH AFRICA CTR INT AGR TROP,BIOTECHNOL RES UNIT,CIAT CALI COLOMBIA HOECHST SCHERING AGR LTDA,AGREVO,INVEST BIOL BOGOTA COLOMBIA NATL ACCELERATOR CTR,VAN DE GRAAFF GRP ZA-7131 FAURE SOUTH AFRICA
Titolo Testata:
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms
fascicolo: 1-4, volume: 130, anno: 1997,
pagine: 362 - 367
SICI:
0168-583X(1997)130:1-4<362:SOTNDI>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
NAC NUCLEAR MICROPROBE; PROTON MICROPROBE; PIXE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
18
Recensione:
Indirizzi per estratti:
Citazione:
C.A. Pineda et al., "STUDY OF THE NUTRIENT DISTRIBUTION IN ROOT-TIPS OF THE TROPICAL FORAGE BRACHIARIA", Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 130(1-4), 1997, pp. 362-367

Abstract

A Brachiaria breeding project is being conducted at CIAT, Colombia tocombine acid soil adaptation of B. decumbens with other favourable traits of Brachiaria species that are less adapted to acid soils. Micro-PIXE was applied to investigate nutrient uptake and distribution in root tips of different species grown in hydroponic culture under controland simulated acid soil stress conditions. Different sample measurement approaches were evaluated, including: (1) linear scans with single point measurements along the root axis; (2) mapping of whole root tips; and (3) mapping of root cross sections. Different tissue types couldbe distinguished on the base of differences in nutrient concentrations and/or Al stress. Al, if Supplied under nutrient stress conditions, increased P accumulation in the central vascular tissue of the meristematic and elongation zone of B. decumbens and B. brizantha. Furthermore, a negative correlation was found between Al and CI accumulation in the root cap of B. decumbens. (C) 1997 Elsevier Science B.V.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/08/20 alle ore 15:32:50