Journal ArticleDOI
Gibberellic-acid-promoted transport of assimilates in stems of Phaseolus vulgaris L. : Localized versus remote site(s) of action.
D. R. Mulligan,John W. Patrick +1 more
TLDR
Measurements of the component transfer processes showed that GA3 was not acting to promote assimilate transfer by increasing the photosynthetic rate of, or the assimilate export rate from the source, nor by altering the mobilizing ability of the competing root sink.Abstract:
Gibberellic acid (GA3), applied as a dispersion in aqueous lanolin to the stumps of decapitated stems of P. vulgaris plants, was found to promote the transfer of 14C-and 32P-labelled assimilates to the site of hormone application. Measurements of the component transfer processes, operating between source and sink (site of hormone application), showed that GA3 was not acting to promote assimilate transfer by increasing the photosynthetic rate of, or the assimilate export rate from the source, nor by altering the mobilizing ability of the competing root sink. Here, it also was found that the time between GA3 application and detection of an enhanced transport flux was independent of the length of the transport pathway. Overall, the evidence obtained indicated that GA3 was not acting on any transfer process remote from its point of hormone application but was acting locally at this latter point.read more
Citations
More filters
Journal ArticleDOI
Photosynthesis, carbon partitioning, and yield
Roger M Gifford,L. T. Evans +1 more
TL;DR: This paper presents a meta-analysis of photosynthesis in Relation to Sink Demand and the role of source and sink systems in this evolution.
Journal ArticleDOI
Effects of potassium and gibberellic acid on stem growth of whole sunflower plants
TL;DR: Gibberellic acid increased the content of reducing sugars, especially in K-deficient plants, and osmotic potential differences within the elongating first internode were increased by GA3 treatment.
Journal ArticleDOI
Growth Responses and Allocation of Assimilates of Rice Seedlings by Paclobutrazol and Gibberellin Treatment
TL;DR: The same starch degrading activity in the crown tissue of paclobutrazol-treated seedlings as in control plants suggests that the accumulated starch is utilized in a normal activity for growth including leaf emergence, tiller formation, and root production, resulting in improved seedling quality.
Journal Article
Effect of Gibberellic Acid Spray on Performance of Tomato
TL;DR: Irrespective of its concentration, spray of gibberellic acid proved beneficial for most parameters, especially in the case of Hyb-SC-3.
Journal ArticleDOI
Effect of Gibberellic Acid on Growth, Yield, and Quality of Leaf Lettuce and Rocket Grown in a Floating System
TL;DR: In this article, the efficacy of supplementation of low levels of gibberellic acid through the mineral nutrient solution of a floating system on yield and quality of leaf lettuce and rocket plants was tested.
References
More filters
Journal ArticleDOI
The use of compartmental analysis in the study of the movement of carbon through leaves.
J. Moorby,P. D. Jarman +1 more
TL;DR: The data were used to test a model of carbon movement from a leaf which postulated the presence of two carbon pools which turned-over at different rates, and export from the leaf was from the ‘labile’ pool.
Journal ArticleDOI
Auxin-Promoted Transport of Metabolites in Stems of Phaseolus vulgaris L.EFFECTS REMOTE FROM THE SITE OF HORMONE APPLICATION
John W. Patrick,P. F. Wareing +1 more
TL;DR: Patrick and Wareing as discussed by the authors found that 2,3,5-triidobenzoic acid (TIBA) inhibited IAA-promoted transport in stem segments of Phaseolus vulgaris.
Related Papers (5)
Auxin-Promoted Transport of Metabolites in Stems of Phaseolus vulgaris L.EFFECTS REMOTE FROM THE SITE OF HORMONE APPLICATION
John W. Patrick,P. F. Wareing +1 more