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פותח על ידי קלירמאש פתרונות בע"מ -
Translocation of foliar-applied urea 15N to reproductive and vegetative sinks of avocado (Persea americana) and its effect on initial fruit set
Year:
1987
Authors :
זילכה, שמואל
;
.
פייגנבאום, סלה
;
.
קליין, יצחק
;
.
Volume :
112
Co-Authors:

S. A. Weinbaum - Department of Pomology, University of California, Davis, CA 95616

Facilitators :
From page:
1061
To page:
1065
(
Total pages:
5
)
Abstract:

Translocation of 15N from foliar-applied urea to vegetative and reproductive sinks of avocado (Persea americana Mill, cvs. Fuerte and Hass) was evaluated during inflorescence development and the early stages of fruitset. Urea (2%) increased the number and the total dry weight of the lateral inflorescence per shoot. The concentration of I5N in avocado inflorescences increased proportionately to the concentration of urea applied to the old leaf surface. The amount of 15 N translocated was not affected by the proximity of the source leaf to the "terminal" inflorescence.15N translocated to developing fruit and to new sprouting leaves in similar amount. Urea N was translocated basipetally from current flush leaves to developing fruit. Removing the vegetative sink reduced N influx to the reproductive tissue and increased initial fruit set by a factor of 1.7 to 2.1 in urea-treated and -untreated shoots, respectively. These data indicate that shoot growth does not limit fruit set in avocado via competition for N.

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acropetal
Acropetal transport
Avocado
basipetal
foliar application
Persea americana
Sink
Source
Translocation
Urea
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
0
Affiliations:
Database:
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
50987
Last updated date:
02/03/2022 17:27
Creation date:
18/10/2020 14:37
Scientific Publication
Translocation of foliar-applied urea 15N to reproductive and vegetative sinks of avocado (Persea americana) and its effect on initial fruit set
112

S. A. Weinbaum - Department of Pomology, University of California, Davis, CA 95616

Translocation of foliar-applied urea 15N to reproductive and vegetative sinks of avocado (Persea americana) and its effect on initial fruit set

Translocation of 15N from foliar-applied urea to vegetative and reproductive sinks of avocado (Persea americana Mill, cvs. Fuerte and Hass) was evaluated during inflorescence development and the early stages of fruitset. Urea (2%) increased the number and the total dry weight of the lateral inflorescence per shoot. The concentration of I5N in avocado inflorescences increased proportionately to the concentration of urea applied to the old leaf surface. The amount of 15 N translocated was not affected by the proximity of the source leaf to the "terminal" inflorescence.15N translocated to developing fruit and to new sprouting leaves in similar amount. Urea N was translocated basipetally from current flush leaves to developing fruit. Removing the vegetative sink reduced N influx to the reproductive tissue and increased initial fruit set by a factor of 1.7 to 2.1 in urea-treated and -untreated shoots, respectively. These data indicate that shoot growth does not limit fruit set in avocado via competition for N.

Scientific Publication
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