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Titolo:
CHANGES IN HORMONAL PATTERN OF THE NEW GROWTH OF SCLEROCARYA-BIRREA AFTER REJUVENATION TREATMENT WITH GA(3) AND HEADING BACK
Autore:
BERTLING I; BANGERTH F;
Indirizzi:
UNIV CALIF RIVERSIDE,DEPT BOT RIVERSIDE CA 92521 UNIV HOHENHEIM,INST OBST GEMUSE & WEINBAU 370 D-70593 STUTTGART GERMANY
Titolo Testata:
Gartenbauwissenschaft
fascicolo: 3, volume: 60, anno: 1995,
pagine: 119 - 124
SICI:
0016-478X(1995)60:3<119:CIHPOT>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
GIBBERELLIN-LIKE; SUBSTANCES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
22
Recensione:
Indirizzi per estratti:
Citazione:
I. Bertling e F. Bangerth, "CHANGES IN HORMONAL PATTERN OF THE NEW GROWTH OF SCLEROCARYA-BIRREA AFTER REJUVENATION TREATMENT WITH GA(3) AND HEADING BACK", Gartenbauwissenschaft, 60(3), 1995, pp. 119-124

Abstract

Gibberellic acid (GA(3)) was injected into the stems of adult trees of the African fruit tree species Sclerocarya birrea ssp. caffra to cause rejuvenation. Invigorated growth after such treatment in comparisonto control trees was visible after 14 days. Another tree, rejuvenatedby 'heading back', also showed growth invigoration. Histological analysis of shoots showed less xylem vessels in the shoots of the GA treated and the 'headed back' tree in comparison to control trees. Levels of gibberellins, indoleacetic acid (IAA), abscisic acid (ABA), zeatin/zeatin riboside (Z/ZR), and isopentenyladenosine (IPA) were determined in leaves and 'shoots' of the newly emerged tissues. In addition to the expected large increase of GA(3) in the new flush, the concentrations of IAA and ABA were also found to be greater in the 'shoots' of treated trees. No significant difference could be detected in the cytokinin pattern. Changes in hormonal pattern of GA(3) treated and the 'headed back' tree were similar. There was a better rooting of cuttings fromtreated rejuvenated trees.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 21:43:58