Water dynamics and transpiration of ;Irwin; mango fruit

Higuchi H., . and Utsunomiya N., . (1996) Water dynamics and transpiration of ;Irwin; mango fruit. [Proceedings Paper]

Sap flow between stem and fruit and transpiration rate in young and mature fruits of ;Irwin; mango were examined. The stem heat balance-method applied in peduncle revealed that sap flew into fruit from 15:00-and out from 8:00-. This pattern of diurnal fluctuation was more definite in mature fruit than in young fruit. Maximum mass outlet flow rate in the daytime was evaluated as 0.2 g 5min-l. On the other hand in young fruit mass outlet flow from fruit was too small to be clearly recorded. A young fruit transpired 0.3 g h-I in the daytime and 0.1 g h-I in the nighttime. Transpiration rate of mature fruit was much larger than that of young fruit; 1.5 g h-I in the daytime and 0.5 g h-I in the nighttime. The total water loss from fruit surface was estimated as 3-4 g a day in young fruit and as 15 g in mature fruit respectively. This study concluded that mango fruit always suffers from water loss through transpiration and outlet sap flow from fruit and that mature fruit demands more water supply than young fruit.

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Abstract

Sap flow between stem and fruit and transpiration rate in young and mature fruits of ;Irwin; mango were examined. The stem heat balance-method applied in peduncle revealed that sap flew into fruit from 15:00-and out from 8:00-. This pattern of diurnal fluctuation was more definite in mature fruit than in young fruit. Maximum mass outlet flow rate in the daytime was evaluated as 0.2 g 5min-l. On the other hand in young fruit mass outlet flow from fruit was too small to be clearly recorded. A young fruit transpired 0.3 g h-I in the daytime and 0.1 g h-I in the nighttime. Transpiration rate of mature fruit was much larger than that of young fruit; 1.5 g h-I in the daytime and 0.5 g h-I in the nighttime. The total water loss from fruit surface was estimated as 3-4 g a day in young fruit and as 15 g in mature fruit respectively. This study concluded that mango fruit always suffers from water loss through transpiration and outlet sap flow from fruit and that mature fruit demands more water supply than young fruit.

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Item Type:	Proceedings Paper
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. mal SB 359 I61 1996 Vol. 2 Call Number
AGROVOC Term:	Mangoes
AGROVOC Term:	Fruit
AGROVOC Term:	Transpiration
AGROVOC Term:	Sap flow
AGROVOC Term:	Water loss
AGROVOC Term:	Fruit crops
AGROVOC Term:	Orchards
AGROVOC Term:	Irrigation
AGROVOC Term:	Growing period
AGROVOC Term:	Solar radiation
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:14
URI:	http://webagris.upm.edu.my/id/eprint/11957

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