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Effects of oxygen concentration in solution and uptake rate by roots on cut roses yield, and nutrients and sugars content in leaves
Year:
2013
Source of publication :
Scientia Horticulturae
Authors :
Bar-Yosef, Bnayahu
;
.
Volume :
155
Co-Authors:
Bar-Yosef, B., Agricultural Research Organization Soil Water and Environmental Sciences, Bet Dagan 50250, Israel
Lieth, J.H., Department of Plant Sciences, University of California, Mailstop 2, One Shields Av., Davis, CA 95616, United States
Facilitators :
From page:
49
To page:
55
(
Total pages:
7
)
Abstract:
The response of rose flower yield to hypoxia has been discussed in the literature, but there is still a lack of sufficient data on plant performance as affected by dissolved oxygen concentration in solution (DOC) and uptake flux by roots, to support efficient aeration control. The objective was to study Rosa L. response to DOC by characterizing oxygen consumption rates, leaf contents of nutrients and sugars, and cut-flower yield. Five levels of DOC in solution, ranging from 7.5 to 1.7mg/L, were investigated. In winter and early spring DOC ≤2.5mg/L was sufficient to satisfy plant demands for oxygen. In late spring and summer the required DOC was ~5mg/L, corresponding to an O2 influx of 0.55mggfw -1h-1. When DOC in summer was 1.7mg/L the accumulation rate of Mn, Zn, P, Mg, and K in leaves was inhibited relative to DOC ~5mg/L, transpiration declined, starch and polymerized glucose accumulated in leaves, and cut-flower yield decreased. Indications in solution were reduced capacity to decrease pH after the May harvest, which stemmed from reduced H+ efflux from roots, and stronger decline in EC due to decreased transpiration. © 2013 Elsevier B.V.
Note:
Related Files :
crop yield
dissolved oxygen
flower
nutrient uptake
pH
plant community
Rosa
sugar
transpiration
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More details
DOI :
10.1016/j.scienta.2013.03.002
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
21205
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:42
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Scientific Publication
Effects of oxygen concentration in solution and uptake rate by roots on cut roses yield, and nutrients and sugars content in leaves
155
Bar-Yosef, B., Agricultural Research Organization Soil Water and Environmental Sciences, Bet Dagan 50250, Israel
Lieth, J.H., Department of Plant Sciences, University of California, Mailstop 2, One Shields Av., Davis, CA 95616, United States
Effects of oxygen concentration in solution and uptake rate by roots on cut roses yield, and nutrients and sugars content in leaves
The response of rose flower yield to hypoxia has been discussed in the literature, but there is still a lack of sufficient data on plant performance as affected by dissolved oxygen concentration in solution (DOC) and uptake flux by roots, to support efficient aeration control. The objective was to study Rosa L. response to DOC by characterizing oxygen consumption rates, leaf contents of nutrients and sugars, and cut-flower yield. Five levels of DOC in solution, ranging from 7.5 to 1.7mg/L, were investigated. In winter and early spring DOC ≤2.5mg/L was sufficient to satisfy plant demands for oxygen. In late spring and summer the required DOC was ~5mg/L, corresponding to an O2 influx of 0.55mggfw -1h-1. When DOC in summer was 1.7mg/L the accumulation rate of Mn, Zn, P, Mg, and K in leaves was inhibited relative to DOC ~5mg/L, transpiration declined, starch and polymerized glucose accumulated in leaves, and cut-flower yield decreased. Indications in solution were reduced capacity to decrease pH after the May harvest, which stemmed from reduced H+ efflux from roots, and stronger decline in EC due to decreased transpiration. © 2013 Elsevier B.V.
Scientific Publication
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