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Gibberellins and abscisic acid contents during flowering and fruit set of 'Shamouti' orange
Year:
1991
Source of publication :
Scientia Horticulturae
Authors :
Erner, Yair
;
.
Volume :
48
Co-Authors:
Sagee, O., Department of Citriculture, ARO, The Volcani Center, Bet Dagan, 50250, Israel
Erner, Y., Department of Citriculture, ARO, The Volcani Center, Bet Dagan, 50250, Israel
Facilitators :
From page:
29
To page:
39
(
Total pages:
11
)
Abstract:
Endogenous gibberellin (GA)-like compounds and abscisic acid (ABA) were extracted simultaneously from leafy (LY) and leafless (LS) inflorescences of cultivar 'Shamouti' orange (Citrus sinensis [L.] Osbeck) during the first 2 months after flower opening (FO). The concentration of GA-like compounds in LY-and LS-borne fruitlets reached a maximum 7 days after FO, and decreased gradually thereafter. No significant difference, on a fresh weight basis, was found in GA-like activity between LY- and LS-borne fruitlets. GA concentrations in the mature leaves subtending LY branches were consistently higher than those leaves subtending LS, or in the LY young leaves themselves. No such differences were observed for ABA in the mature or young leaves. The concentration of ABA in the fruitlets decreased during fruit development; 1 month after FO it was reduced to about 1 15 of the level found 2 days after FO. During early fruitlet development, until 7 days after FO, ABA concentrations were significantly higher in LS- than in the LY-borne fruitlets. Consistently, amounts and concentrations of ABA tended to be higher in the LS than in LY. Fruitlets borne on LY had higher GA levels than the adjacent young leaves at the early stages of fruitlet development. This trend was reversed at 63 days after FO. The ratio of GA to ABA in fruitlets was always higher in LY than in LS, reaching a peak 1 month after FO. These results are discussed in relation to the better fruit set on LY. © 1991.
Note:
Related Files :
'Shamouti' orange
Abscisic acid
Citrus sinensis
gibberellic acids
leafless and leafy inflorescences
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Related Content
More details
DOI :
10.1016/0304-4238(91)90150-W
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
29267
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:45
Scientific Publication
Gibberellins and abscisic acid contents during flowering and fruit set of 'Shamouti' orange
48
Sagee, O., Department of Citriculture, ARO, The Volcani Center, Bet Dagan, 50250, Israel
Erner, Y., Department of Citriculture, ARO, The Volcani Center, Bet Dagan, 50250, Israel
Gibberellins and abscisic acid contents during flowering and fruit set of 'Shamouti' orange
Endogenous gibberellin (GA)-like compounds and abscisic acid (ABA) were extracted simultaneously from leafy (LY) and leafless (LS) inflorescences of cultivar 'Shamouti' orange (Citrus sinensis [L.] Osbeck) during the first 2 months after flower opening (FO). The concentration of GA-like compounds in LY-and LS-borne fruitlets reached a maximum 7 days after FO, and decreased gradually thereafter. No significant difference, on a fresh weight basis, was found in GA-like activity between LY- and LS-borne fruitlets. GA concentrations in the mature leaves subtending LY branches were consistently higher than those leaves subtending LS, or in the LY young leaves themselves. No such differences were observed for ABA in the mature or young leaves. The concentration of ABA in the fruitlets decreased during fruit development; 1 month after FO it was reduced to about 1 15 of the level found 2 days after FO. During early fruitlet development, until 7 days after FO, ABA concentrations were significantly higher in LS- than in the LY-borne fruitlets. Consistently, amounts and concentrations of ABA tended to be higher in the LS than in LY. Fruitlets borne on LY had higher GA levels than the adjacent young leaves at the early stages of fruitlet development. This trend was reversed at 63 days after FO. The ratio of GA to ABA in fruitlets was always higher in LY than in LS, reaching a peak 1 month after FO. These results are discussed in relation to the better fruit set on LY. © 1991.
Scientific Publication
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