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Analysis of fruit growth in grapefruit as affected by irrigation intervals
Year:
1989
Source of publication :
Scientia Horticulturae
Authors :
Cohen, Aharon
;
.
Goell, Ari
;
.
Volume :
39
Co-Authors:
Goell, A., Department of Citriculture, Volcani Center, Agricultural Research Organization, P.O. Box 6, Bet Dagan, 50250, Israel
Cohen, A., Department of Citriculture, Volcani Center, Agricultural Research Organization, P.O. Box 6, Bet Dagan, 50250, Israel
Facilitators :
From page:
223
To page:
233
(
Total pages:
11
)
Abstract:
A study of the daily changes in fruit volume was carried out in an attempt to analyse the suitability of the apparent fruit growth (AFG) rate as an indicator for timing of irrigation in grapefruit. Three distinct fruit growth phases could be distinguished within an irrigation cycle. Phase 1, lasting about 3 days, was characterized by a relatively rapid volume increment rate owing to both turgor-attributed physical swelling of the fruit and its normal growth; Phase 2, with a moderate volume increment rate, defined as normal growth; Phase 3, in which fruit volume growth stopped altogether, sometimes even showing some fruit shrinkage. Even though no changes in fruit volume were discernible during Phase 3, it is proposed that some growth did take place, being counterbalanced by an equivalent amount of shrinkage. Comparison of the growth patterns of fruits from moisture stressed (S) and regularly irrigated (RI) trees showed that, after irrigation was renewed, the fruits from S trees swelled and grew faster for longer periods. This more rapid growth could compensate for most or all of the growth lost during the stress period. Girdling of branches was effective in prolonging the period of faster fruit growth rate in S trees. These observations argue against using the AFG rate as an indicator for timing of irrigation. They also lead to the question as to the nature of the factor(s) which promote the faster growth of fruits from S trees after irrigation renewal. © 1989.
Note:
Related Files :
apparent fruit growth rate
Citrus
fruit swelling
girdling
water stress
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More details
DOI :
10.1016/0304-4238(89)90135-0
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
21479
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:44
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Scientific Publication
Analysis of fruit growth in grapefruit as affected by irrigation intervals
39
Goell, A., Department of Citriculture, Volcani Center, Agricultural Research Organization, P.O. Box 6, Bet Dagan, 50250, Israel
Cohen, A., Department of Citriculture, Volcani Center, Agricultural Research Organization, P.O. Box 6, Bet Dagan, 50250, Israel
Analysis of fruit growth in grapefruit as affected by irrigation intervals
A study of the daily changes in fruit volume was carried out in an attempt to analyse the suitability of the apparent fruit growth (AFG) rate as an indicator for timing of irrigation in grapefruit. Three distinct fruit growth phases could be distinguished within an irrigation cycle. Phase 1, lasting about 3 days, was characterized by a relatively rapid volume increment rate owing to both turgor-attributed physical swelling of the fruit and its normal growth; Phase 2, with a moderate volume increment rate, defined as normal growth; Phase 3, in which fruit volume growth stopped altogether, sometimes even showing some fruit shrinkage. Even though no changes in fruit volume were discernible during Phase 3, it is proposed that some growth did take place, being counterbalanced by an equivalent amount of shrinkage. Comparison of the growth patterns of fruits from moisture stressed (S) and regularly irrigated (RI) trees showed that, after irrigation was renewed, the fruits from S trees swelled and grew faster for longer periods. This more rapid growth could compensate for most or all of the growth lost during the stress period. Girdling of branches was effective in prolonging the period of faster fruit growth rate in S trees. These observations argue against using the AFG rate as an indicator for timing of irrigation. They also lead to the question as to the nature of the factor(s) which promote the faster growth of fruits from S trees after irrigation renewal. © 1989.
Scientific Publication
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