ISSN:
1573-5087
Keywords:
Pea
;
Pisum
;
apical senescence
;
defruiting
;
polyamines
;
putrescine
;
spermidine
;
spermine
;
polyamine
;
synthesis inhibitors
;
gibberellin
;
1-aminocyclopropane-1-carboxylic acid
;
aminoethoxyvinyl glycine
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract The effect of various treatments on the apical senescence and polyamine content of apical buds of G2 peas was analysed. Defruiting prevented senescence and increased bud size and polyamine content. Exogenous applications of GA20 enhanced bud size and spermidine concentration. Applied spermidine had a slight effect on spermidine level but did not delay senescence. ACC strongly induced adecrease in bud size and, at 10 mM, apical senescence. This was accompanied by a steady decline in the level of all polyamines though their concentration remained constant until 10 mM ACC, where a drop was noted. Spermidine in the presence of ACC modulated the effect of ACC on the bud size while returning the internal polyamine content to control levels. AVG, an inhibitor of ACC synthesis produced pronounced increases in putrescine though no apparent effect on apical bud growth. Polyamine synthesis inhibitors were without effect on growth or internal polyamine content. The internal polyamine content appeared to correlate with apical bud size and vigor but did not show any consistent relationship to apical bud senescence.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00117596
Permalink
