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פותח על ידי קלירמאש פתרונות בע"מ -
Control of Alternaria black spot symptoms in persimmon fruit by growth regulators
Year:
2015
Source of publication :
וולקני וויס
Authors :
ביטון, אסתי
;
.
פייגנברג, אולג
;
.
פרוסקי, דב
;
.
פרידמן, חיה
;
.
Volume :
Special issue - Facing challenges in postharvest food losses, April 28-30 (Agritech)
Co-Authors:
Facilitators :
From page:
20
To page:
24
(
Total pages:
5
)
Abstract:

In Israel, black spot, caused by Alternaria alternata, is the main postharvest factor that reduces quality and impairs storability of persimmon fruits Diospyros kaki cv. Triumph. The fungus infects the fruit in the orchard and remains quiescent until harvest or renews its development just before harvest, following rain or high humidity, and then preferentially colonizes the stem side of the fruit. Recent findings suggest the importance of ethylene and respiration, early during fruit growth, as factors influencing maturity, crack development, and susceptibility to Alternaria black spot (ABS) colonization in the stem end side of the fruit. We tested the effects of the growth regulator Superlon – a mixture of gibberellin (GA4+7) and benzyl adenine (BA) – on fruit physiological responses during growth on ABS incidence. Superlon treatments during early stages of fruit growth, i.e. starting 40 days after fruit set (dafs), inhibited ethylene and CO2 evolution of the stemd end side. Application of the treatment at later state of fruit development, i.e. 100 dafs, enhanced cell proliferation of the external layers of the exocarp under the fruit cuticle. In both cases, Superlon delayed chlorophyll degradation, and reduced fruit cuticle cracks and ABS susceptibility during late stages of fruit growth and during storage. These results suggest that the phytohormone, acting as a modulator of host physiological responses that resulted in delayed fruit maturation, is a main factor in enhanced resistance to ABS at harvest and during storage.

Note:
Related Files :
Alternaria
black spot
Diospyros kaki
food loss
food storage
fungi
growth regulators
Persimmon
plant diseases and disorders
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
0
Affiliations:
Database:
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
55613
Last updated date:
02/03/2022 17:27
Creation date:
18/07/2021 11:04
You may also be interested in
Scientific Publication
Control of Alternaria black spot symptoms in persimmon fruit by growth regulators
Special issue - Facing challenges in postharvest food losses, April 28-30 (Agritech)
Control of Alternaria black spot symptoms in persimmon fruit by growth regulators

In Israel, black spot, caused by Alternaria alternata, is the main postharvest factor that reduces quality and impairs storability of persimmon fruits Diospyros kaki cv. Triumph. The fungus infects the fruit in the orchard and remains quiescent until harvest or renews its development just before harvest, following rain or high humidity, and then preferentially colonizes the stem side of the fruit. Recent findings suggest the importance of ethylene and respiration, early during fruit growth, as factors influencing maturity, crack development, and susceptibility to Alternaria black spot (ABS) colonization in the stem end side of the fruit. We tested the effects of the growth regulator Superlon – a mixture of gibberellin (GA4+7) and benzyl adenine (BA) – on fruit physiological responses during growth on ABS incidence. Superlon treatments during early stages of fruit growth, i.e. starting 40 days after fruit set (dafs), inhibited ethylene and CO2 evolution of the stemd end side. Application of the treatment at later state of fruit development, i.e. 100 dafs, enhanced cell proliferation of the external layers of the exocarp under the fruit cuticle. In both cases, Superlon delayed chlorophyll degradation, and reduced fruit cuticle cracks and ABS susceptibility during late stages of fruit growth and during storage. These results suggest that the phytohormone, acting as a modulator of host physiological responses that resulted in delayed fruit maturation, is a main factor in enhanced resistance to ABS at harvest and during storage.

Scientific Publication
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