A role for carbohydrate levels in the control of flowering in citrus

E. E. Goldschmidt; N. Aschkenazi; Y. Herzano; A. A. Schaffer; S. P. Monselise

doi:10.1016/0304-4238(85)90008-1

A role for carbohydrate levels in the control of flowering in citrus

E. E. Goldschmidt^*, N. Aschkenazi, Y. Herzano, A. A. Schaffer, S. P. Monselise

^*Corresponding author for this work

Institute of Plant Sciences and Genetics in Agriculture

Research output: Contribution to journal › Article › peer-review

110 Scopus citations

Abstract

Girdling in October of small or large fruitless branches increased 2-3-fold both starch content of leaves and flower numbers as compared with ungirdled 'Murcott' mandarin trees. Autumn girdling and GA₃ treatments were both effective and additive in increasing starch contents of leaves and twigs of 'Shamouti' orange trees. GA₃, however, had the expected effect of depressing the reproductive inflorescences in both girdled and ungirdled branches, while girdling had the opposite effect. Girdling and fruit removal in October also additively and dramatically increased flower production in 'Murcott'. Lowtemperature regimes in a phytotron caused young 'Minneola' budlings to flower earlier in the season and more profusely, while having no effect on starch content of leaves and twigs. The interactions of increased carbohydrate content and gibberellin in the control of flower formation in citrus are discussed.

Original language	English
Pages (from-to)	159-166
Number of pages	8
Journal	Scientia Horticulturae
Volume	26
Issue number	2
DOIs	https://doi.org/10.1016/0304-4238(85)90008-1
State	Published - Jun 1985

Keywords

citrus
cold temperatures
de-fruiting
gibberellin
girdling

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10.1016/0304-4238(85)90008-1

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title = "A role for carbohydrate levels in the control of flowering in citrus",

abstract = "Girdling in October of small or large fruitless branches increased 2-3-fold both starch content of leaves and flower numbers as compared with ungirdled 'Murcott' mandarin trees. Autumn girdling and GA3 treatments were both effective and additive in increasing starch contents of leaves and twigs of 'Shamouti' orange trees. GA3, however, had the expected effect of depressing the reproductive inflorescences in both girdled and ungirdled branches, while girdling had the opposite effect. Girdling and fruit removal in October also additively and dramatically increased flower production in 'Murcott'. Lowtemperature regimes in a phytotron caused young 'Minneola' budlings to flower earlier in the season and more profusely, while having no effect on starch content of leaves and twigs. The interactions of increased carbohydrate content and gibberellin in the control of flower formation in citrus are discussed.",

keywords = "citrus, cold temperatures, de-fruiting, gibberellin, girdling",

author = "Goldschmidt, {E. E.} and N. Aschkenazi and Y. Herzano and Schaffer, {A. A.} and Monselise, {S. P.}",

year = "1985",

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AU - Goldschmidt, E. E.

AU - Aschkenazi, N.

AU - Herzano, Y.

AU - Schaffer, A. A.

AU - Monselise, S. P.

PY - 1985/6

Y1 - 1985/6

N2 - Girdling in October of small or large fruitless branches increased 2-3-fold both starch content of leaves and flower numbers as compared with ungirdled 'Murcott' mandarin trees. Autumn girdling and GA3 treatments were both effective and additive in increasing starch contents of leaves and twigs of 'Shamouti' orange trees. GA3, however, had the expected effect of depressing the reproductive inflorescences in both girdled and ungirdled branches, while girdling had the opposite effect. Girdling and fruit removal in October also additively and dramatically increased flower production in 'Murcott'. Lowtemperature regimes in a phytotron caused young 'Minneola' budlings to flower earlier in the season and more profusely, while having no effect on starch content of leaves and twigs. The interactions of increased carbohydrate content and gibberellin in the control of flower formation in citrus are discussed.

AB - Girdling in October of small or large fruitless branches increased 2-3-fold both starch content of leaves and flower numbers as compared with ungirdled 'Murcott' mandarin trees. Autumn girdling and GA3 treatments were both effective and additive in increasing starch contents of leaves and twigs of 'Shamouti' orange trees. GA3, however, had the expected effect of depressing the reproductive inflorescences in both girdled and ungirdled branches, while girdling had the opposite effect. Girdling and fruit removal in October also additively and dramatically increased flower production in 'Murcott'. Lowtemperature regimes in a phytotron caused young 'Minneola' budlings to flower earlier in the season and more profusely, while having no effect on starch content of leaves and twigs. The interactions of increased carbohydrate content and gibberellin in the control of flower formation in citrus are discussed.

KW - citrus

KW - cold temperatures

KW - de-fruiting

KW - gibberellin

KW - girdling

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A role for carbohydrate levels in the control of flowering in citrus

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Keywords

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