Sucrose Supply Can Increase Longevity of Broccoli (Brassica-Oleracea) Branchlets Kept At 22-Degrees-C

Irving, DE and Joyce, DC (1995) Sucrose Supply Can Increase Longevity of Broccoli (Brassica-Oleracea) Branchlets Kept At 22-Degrees-C. Plant Growth Regulation, 17 3: 251-256. doi:10.1007/BF00024733


Author Irving, DE
Joyce, DC
Title Sucrose Supply Can Increase Longevity of Broccoli (Brassica-Oleracea) Branchlets Kept At 22-Degrees-C
Journal name Plant Growth Regulation   Check publisher's open access policy
ISSN 0167-6903
Publication date 1995-11-01
Year available 1995
Sub-type Article (original research)
DOI 10.1007/BF00024733
Open Access Status Not yet assessed
Volume 17
Issue 3
Start page 251
End page 256
Total pages 6
Place of publication DORDRECHT
Publisher Kluwer Academic Publishers
Language eng
Abstract Sucrose was supplied several hours after harvest to broccoli branchlets via the transpiration stream in order to increase the amount of sucrose available for respiration and to determine its influence on longevity at 22 degrees C. Calculations based on solution uptake indicated that an 8% (w/v) sucrose solution supplied sufficient substrate for respiration, but the pattern of respiratory decline after harvest was not altered by supply of exogenous sucrose, and yellowing of floret sepals began after 2 days. However, when sucrose was supplied immediately after harvest, yellowing was delayed. Treatment with cytokinin (50 ppm 6-benzylaminopurine), to delay yellowing, had no effect on levels of sucrose in branchlets after 4.5 days, but retarded loss of chlorophyll. Floret tissues appear to sense the decline in sucrose after harvest, the result being induction of senescence as judged by yellowing. 6-benzylaminopurine may block the sensing mechanism.
Keyword 6-Benzylaminopurine
Brassica Oleracea
Broccoli
Respiration
Senescence
Sucrose
Maize Root-Tips
Physiological-Changes
Respiration
Harvest
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: ResearcherID Downloads - Archived
 
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