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Biochemical basis of thermoregulation and autocatalytic ethylene production in ripening of kiwifruit cv. Hayward
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Abstract(s)
O kiwi (Acíinidia deliciosa A. Chev.) tem sido considerado um fruto climatérico. No entanto, este fruto comporta-se atipicamente em resposta à aplicação externa de etileno a várias temperaturas. A incapacidade do kiwi para produzir etileno a baixas temperaturas, a produção de etileno à temperatura ambiente após um período de frio.
o limite máximo de temperatura para produção de etileno e o seu comportamento pósarmazenamento
não estão suficientemente estudados. Nesta tese investigaram-se algumas características particulares do percurso da biossíntese do etileno e o amadurecimento do kiwi induzidos por propileno a temperaturas de 10 a 45ºC, após armazenamento a baixas temperaturas, assim como após armazenamento em atmosfera
controlada (CA) e nível de oxigénio ultra baixo (ULO).
Kiwifruit (Acíinidia deliciosa A. Chcv.) is considcrcd a climactcric fruit. However, it bchaves atypically in response to externai ethylene application at different temperaturcs. The lack of ability of the kiwifruit to produce ethylene at low temperatures, its chilling requirements and maximum temperalure limil for ethylene production and its behaviour post-storagc are poorly understood. In this thesis were studied some particular features of the ethylene biosynthesis pathway and ripening of kiwifruit induced by propylene at temperatures from 10 to 45ºC, during shelf-life after chilling, as well as after storage in controlled atmosphere (CA) and ultra low oxygen (ULO) conditions.
Kiwifruit (Acíinidia deliciosa A. Chcv.) is considcrcd a climactcric fruit. However, it bchaves atypically in response to externai ethylene application at different temperaturcs. The lack of ability of the kiwifruit to produce ethylene at low temperatures, its chilling requirements and maximum temperalure limil for ethylene production and its behaviour post-storagc are poorly understood. In this thesis were studied some particular features of the ethylene biosynthesis pathway and ripening of kiwifruit induced by propylene at temperatures from 10 to 45ºC, during shelf-life after chilling, as well as after storage in controlled atmosphere (CA) and ultra low oxygen (ULO) conditions.
Description
Tese de Doutoramento, Produção Vegetal, Unidade de Ciências e Tecnologias Agrárias, Universidade do Algarve, 1999
Keywords
Kiwi Actinidia deliciosa Comportamento pós-colheita Temperatura