OrangerV1, Main, Exploration, bibRecord, 002D65

Endogenous hormonal status in citrus flowers and fruitlets: relationship with postbloom fruit drop

Identifieur interne : 002D65 ( Main/Exploration ); précédent : 002D64; suivant : 002D66

Endogenous hormonal status in citrus flowers and fruitlets: relationship with postbloom fruit drop

Auteurs : Luis V. Pozo [Cuba, États-Unis]

Source :

Scientia Horticulturae [ 0304-4238 ] ; 2001.

RBID : ISTEX:D7FB05BD480DF1259CD2F57F2F5770D368FB0B8A

Descripteurs français

Pascal (Inist)
- Abscission, Abscissique acide, Accumulation biologique, Avortement, Chlorophylle, Citrus paradisi, Citrus reticulata Citrus sinensis, Citrus sinensis, Concentration chimique, Cuba, Fleur, Gibbérellique acide, Jasmonique acide, Nouaison, Ovaire, Régulation, Sol ferrallitique.
Wicri :
- geographic : Cuba.
- topic : Avortement.

English descriptors

KwdEn :
- ABA, Abortion, Abscisic acid, Abscission, Biological accumulation, Chemical concentration, Chlorophyll, Citrus flowering, Citrus paradisi, Citrus sinensis, Cuba, Ferrallitic soil, Flower, Fruit drop, Fruit set, Fruit setting, Fruitlets, GA, Gibberellic acid, Jasmonates, Ovary, Regulation(control).

Abstract

Gibberellin accumulation in citrus ovaries has been proposed as an activating signal for fruit set in citrus. Our data under tropical conditions associate pollination-dependent fruiting of ‘Valencia’ orange with high ratios of growth promoters to inhibitors (G/I) in floral organs. Lower values of G/I were found in the parthenocarpic ‘Marsh Seedless’ grapefruit and ‘Ortanique’ tangor, the latter a self-incompatible, seedless hybrid. In all the varieties, two kind of fruitlets were identified at the early stages of fruit development: (1) normal developing fruits, with high peel chlorophyll content, firmly attached to the stem (2) non-growing fruits with lower peel chlorophyll content, prone to early abscission. G/I values of firmly attached fruitlets were higher than those of non-growing, early abscising fruits during the fruit set period. In addition, higher absicisic (ABA) and ABA-like inhibitor accumulation as well as lower growth promoting substances were found in proximal abscission zones of abscising fruits. Furthermore, higher contents of jasmonic acid-like compounds in floral organs and in developing fruits were found in the cultivars with stronger early fruit abscission, which suggest that ABA-like and jasmonic acid-like substances could play a shared role in fruit set and early fruit abscission.

Url:

https://api.istex.fr/document/D7FB05BD480DF1259CD2F57F2F5770D368FB0B8A/fulltext/pdf

DOI: 10.1016/S0304-4238(01)00269-2

Affiliations:

Cuba, États-Unis

Le document en format XML

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<term>Gibberellic acid</term>
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<term>Chlorophylle</term>
<term>Citrus paradisi</term>
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<term>Fleur</term>
<term>Gibbérellique acide</term>
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<term>Ovaire</term>
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<front><div type="abstract" xml:lang="en">Gibberellin accumulation in citrus ovaries has been proposed as an activating signal for fruit set in citrus. Our data under tropical conditions associate pollination-dependent fruiting of ‘Valencia’ orange with high ratios of growth promoters to inhibitors (G/I) in floral organs. Lower values of G/I were found in the parthenocarpic ‘Marsh Seedless’ grapefruit and ‘Ortanique’ tangor, the latter a self-incompatible, seedless hybrid. In all the varieties, two kind of fruitlets were identified at the early stages of fruit development: (1) normal developing fruits, with high peel chlorophyll content, firmly attached to the stem (2) non-growing fruits with lower peel chlorophyll content, prone to early abscission. G/I values of firmly attached fruitlets were higher than those of non-growing, early abscising fruits during the fruit set period. In addition, higher absicisic (ABA) and ABA-like inhibitor accumulation as well as lower growth promoting substances were found in proximal abscission zones of abscising fruits. Furthermore, higher contents of jasmonic acid-like compounds in floral organs and in developing fruits were found in the cultivars with stronger early fruit abscission, which suggest that ABA-like and jasmonic acid-like substances could play a shared role in fruit set and early fruit abscission.</div>
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Endogenous hormonal status in citrus flowers and fruitlets: relationship with postbloom fruit drop

Endogenous hormonal status in citrus flowers and fruitlets: relationship with postbloom fruit drop

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

	Serveur d'exploration sur l'oranger
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