Carbohydrate Availability in Relation to Fruitlet Abscission in Citrus

Ruiz, Rodrigo Vergara; García-Luis, Amparo; Monerri, Consuelo; Guardiola, J. L.

doi:10.1006/anbo.2001.1415

Cited by 83 publications

(70 citation statements)

References 27 publications

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“…Levels of total leaf carbohydrates at harvest time were greater than at flowering for all concentrations used (Figure 4). This behavior may be attributed to the greater consumption of carbohydrates that occurs at flowering in citrus plants in order to form both vegetative and flowering shoots (CRUZ et al, 2007;MONERRI et al, 2011;RUIZ et al, 2001). After the period of natural abscission, in addition to the lower demand for carbohydrates by the fruits, transport from the roots to (Figures 2A and 3A).…”

Section: Resultsmentioning

confidence: 98%

“…It is known that carbohydrates are used in the formation and development of the flowers and fruit of citrus trees (CRUZ et al, 2007;MONERRI et al, 2011;RUIZ et al, 2001) and that the total carbohydrate demand by the flower during anthesis exceeds the daily carbohydrate production of the leaf (BUSTAN; GOLDSCHMIDT, 1998), with higher levels being necessary before flowering in order to allow for fixation of the flowers and fruits and avoid alternate bearing.…”

Section: Resultsmentioning

confidence: 99%

“…Carbohydrate reserves are used in the formation and development of the flowers and fruit of citrus trees (CRUZ et al, 2007;MONERRI et al, 2011;RUIZ et al, 2001). During this stage, the demand for carbohydrates in the plants is high, due to the excessive amount of flowers formed by the tangerine, surpassing the daily production of carbohydrates by the leaves (BUSTAN; GOLDSCHMIDT, 1998).…”

Section: Introductionmentioning

confidence: 99%

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Carbohydrate levels in the leaves and production consistency of the Ponkan tangerine when thinned out with Ethephon

Moreira¹,

Ramos²,

Cruz³

et al. 2013

Rev. Ciênc. Agron.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Carbohydrate levels in the leaves and production consistency of the Ponkan tangerine when thinned out with Ethephon

Moreira¹,

Ramos²,

Cruz³

et al. 2013

Rev. Ciênc. Agron.

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“…The reduced fruit load induced low concentrations of endogenous gibberellins, favoring the signaling of floral induction (GRAVINA., 2007;MUÑOZ-FAMBUENA et al, 2012). This, combined with a large carbohydrate availability (RUIZ et al, 2001), resulted in an abundant bloom. This - GOLDSCHMIDT, 1996).…”

Section: Resultsmentioning

confidence: 99%

3,5,6-trichloro-2-pyridinyloxyacetic acid as effective thinning agent for fruit of 'Montenegrina' mandarin

et al. 2016

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The 'Montenegrina' mandarin ( Citrus deliciosa Tenore) is widely cultivated in southern Brazil. This cultivar has a great tendency for alternate bearing, requiring thining of the fruit. However, the chemical thinners studied until now in this cultivar have not been successful. The objective of this research was to evaluate the effect of 3,5,6-trichloro-2-pyridinyloxyacetic acid (3,5,6-TPA) on the production and fruit quality of the 'Montenegrina' mandarin, in comparison with hand thinning and the options of chemical thinning previously studied. Hand thinning and no thinning were used as controls. Ethephon was applied in three doses: 200mg L-1, 300mg L-1 or 200mg L-1 + 3% urea; or 3,5,6-TPA, in four doses: 10, 20, 30 or 40mg L-1. Fruits of the hand thinned trees and those treated with 40mg L-1 showed greater average size, greater distribution of commercial caliber and more orange colors. No treatment reduced alternate bearing. Applications of 40mg L-1 of 3,5,6-TPA as a chemical thinner, during the physiological drop of young fruit, had a similar effect that of hand thinning over yield and quality of fruits of 'Montenegrina' mandarin.

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“…Na inflorescência com folhas, o fruto cresce mais rapidamente e apresenta maior probabilidade de permanecer na planta até a colheita, em relação aos frutos de inflorescências sem folhas (RUIZ et al, 2001). Frutos produzidos em inflorescências com folhas têm pegamento entre quatro a seis vezes maior, em relação aos produzidos em inflorescências que não têm folhas.…”

Section: Resultsunclassified

Indução floral de limeiras ácidas 'Tahiti' submetidas a baixas temperaturas

2011

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Este trabalho foi realizado com o objetivo de quantificar a necessidade de acúmulo de horas de frio para a floração da limeira ácida 'Tahiti', sem a aplicação de deficiência hídrica, além de avaliar as trocas gasosas e fluorescência da clorofila a em condições de baixa temperatura e baixa luminosidade. O experimento foi conduzido em Viçosa-MG, Brasil, com plantas de limeira ácida 'Tahiti', enxertadas sobre limoeiro 'Cravo', cultivadas em vasos de 12 litros. O delineamento utilizado foi o inteiramente casualizado, com sete tratamentos e quatro repetições, com uma planta por parcela. A partir do dia 01/02/2008 até o dia 30/04/2008, quatro plantas foram retiradas da câmara de crescimento (CC) (temperatura: 16/12°C (dia/noite); umidade relativa: 70%; fotoperíodo: 10 horas; densidade de fluxo de fótons fotossintéticos: 100µmol m-2 s-1) a cada 15 dias e levadas para a casa de vegetação (CV) sem controle ambiental, totalizando sete datas de transferência. A exposição de plantas a baixas temperaturas, sob condições controladas não causou alterações significativas nas características de fluorescência da clorofila a, mas causou redução de 80% nas trocas gasosas. Entretanto, essa redução não prejudicou a floração das plantas. As plantas expostas a condições não indutoras apenas emitiram brotações vegetativas, enquanto aquelas submetidas a baixas temperaturas, quanto maior foi o tempo de exposição, maior foi o número de flores emitidas.

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Carbohydrate Availability in Relation to Fruitlet Abscission in Citrus

Cited by 83 publications

References 27 publications

Carbohydrate levels in the leaves and production consistency of the Ponkan tangerine when thinned out with Ethephon

Carbohydrate levels in the leaves and production consistency of the Ponkan tangerine when thinned out with Ethephon

3,5,6-trichloro-2-pyridinyloxyacetic acid as effective thinning agent for fruit of 'Montenegrina' mandarin

Indução floral de limeiras ácidas 'Tahiti' submetidas a baixas temperaturas

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