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Title: Assimilate partitioning in avocado, Persea americana

Abstract

Assimilate partitioning is being studied in avocado, Persea americana cv. Millborrow in relation to fruit set. Single leaves on girdled branches of 10 year old trees were radiolabeled for 1 hr with 13..mu..Ci of /sup 14/CO/sub 2/. The source leaves were sampled during the experiment to measure translocation rates. At harvest the sink tissues were dissected and the incorporated radioactivity was measured. The translocation of /sup 14/C-labelled compounds to other leaves was minimal. Incorporation of label into fruitlets varied with the tissue and the stage of development. Sink (fruitlets) nearest to the labelled leaf and sharing the same phyllotaxy incorporated the most /sup 14/C. Source leaves for single non-abscising fruitlets retained 3X more /sup 14/C-labelled compounds than did source leaves for 2 or more fruitlets at 31 hrs. post-labelling. Export of label decreased appreciably when fruitlets abscised. If fruitlets abscised within 4 days of labeling then the translocation pattern was similar to the pattern for single fruitlets. If the fruitlet abscised later, the translocation pattern was intermediate between the single and double fruitlet pattern.

Authors:
;
Publication Date:
Research Org.:
Univ. of Florida, Homestead
OSTI Identifier:
5207369
Alternate Identifier(s):
OSTI ID: 5207369
Resource Type:
Conference
Journal Name:
Plant Physiol., Suppl.; (United States)
Additional Journal Information:
Journal Volume: 80:4; Conference: Annual meeting of the American Society of Plant Physiologists, Baton Rouge, LA, USA, 8-12 Jun 1986
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; CARBON 14 COMPOUNDS; BIOLOGICAL LOCALIZATION; TRANSLOCATION; AVOCADOS; LEAVES; RADIONUCLIDE KINETICS; TRACER TECHNIQUES; FOOD; FRUITS; ISOTOPE APPLICATIONS; LABELLED COMPOUNDS 550201* -- Biochemistry-- Tracer Techniques

Citation Formats

Finazzo, S., and Davenport, T.L. Assimilate partitioning in avocado, Persea americana. United States: N. p., 1986. Web.
Finazzo, S., & Davenport, T.L. Assimilate partitioning in avocado, Persea americana. United States.
Finazzo, S., and Davenport, T.L. Tue . "Assimilate partitioning in avocado, Persea americana". United States.
@article{osti_5207369,
title = {Assimilate partitioning in avocado, Persea americana},
author = {Finazzo, S. and Davenport, T.L.},
abstractNote = {Assimilate partitioning is being studied in avocado, Persea americana cv. Millborrow in relation to fruit set. Single leaves on girdled branches of 10 year old trees were radiolabeled for 1 hr with 13..mu..Ci of /sup 14/CO/sub 2/. The source leaves were sampled during the experiment to measure translocation rates. At harvest the sink tissues were dissected and the incorporated radioactivity was measured. The translocation of /sup 14/C-labelled compounds to other leaves was minimal. Incorporation of label into fruitlets varied with the tissue and the stage of development. Sink (fruitlets) nearest to the labelled leaf and sharing the same phyllotaxy incorporated the most /sup 14/C. Source leaves for single non-abscising fruitlets retained 3X more /sup 14/C-labelled compounds than did source leaves for 2 or more fruitlets at 31 hrs. post-labelling. Export of label decreased appreciably when fruitlets abscised. If fruitlets abscised within 4 days of labeling then the translocation pattern was similar to the pattern for single fruitlets. If the fruitlet abscised later, the translocation pattern was intermediate between the single and double fruitlet pattern.},
doi = {},
journal = {Plant Physiol., Suppl.; (United States)},
number = ,
volume = 80:4,
place = {United States},
year = {1986},
month = {4}
}

Conference:
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