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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
21/02/2014 |
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Actualizado : |
22/03/2021 |
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Tipo de producción científica : |
Tesis |
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Autor : |
CABRERA, D. |
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Afiliación : |
CARLOS DANILO CABRERA BOLOGNA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Maturation and ripening of "Doyenne du comice" pears. [Thesis Master of Applied Science - M. Appl. Sc.] |
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Fecha de publicación : |
1998 |
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Fuente / Imprenta : |
Palmerston North (New Zealand): Massey University, 1998. |
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Páginas : |
103 p. |
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Idioma : |
Inglés |
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Notas : |
A thesis presented in partial fulfilment of the requirements for the degree of Master of Applied Science in Horticultural Science at Massey University, Palmerston North, New Zealand. |
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Contenido : |
ABSTRACT.
Characterisation of fruit quality attributes before and at harvest, during coolstorage and during ripening was made using standard and new, non-destructive devices during both the 1996 and 1997 seasons. Fruit firmness was linearly related to time when measured either by 'Kiwifirm' or penetrometer before harvest. Destructive techniques, the penetrometer and the texture analyser, were used to measure firmness and compared with non-destructive devices, the Kiwifirm and the softness meter. It is suggested that expressing rates of softening will be much more straightforward using a device such as the Kiwifirm. This device and the softness meter provided firmness data for pears that were too soft to measure by penetrometer. The effects of harvest date (1,11 and 21 March, 1996) and three crop loads on fruit maturity after a period of 6 weeks in coolstorage were investigated. Fruit size increased considerably during the 20 days before harvest, suggesting that periodical harvests need to be made in order to pick optimum size fruit each time. Maturity at harvest influenced the quality of 'Comice' stored at 0°C in air. Fruit from different harvests behaved differently in terms of softening behaviour and colour changes after 6 weeks in coolstorage. Crop load did not affect fruit quality attributes assessed after coolstorage. The characterisation of the nature and degree of within-tree and between tree fruit variability in harvest maturity and final ripening behaviour of 'Doyenne du Comice' pear was assessed by measuring firmness and colour. These attributes were measured non-destructively on fruit from different positions on the trees, and subsequently measured at harvest and during ripening at 20°C after 7 weeks in coolstorage at 0°C in air. Fruit behaved differently in terms of softening behaviour and colour changes depending on their position on the tree. Fruit maturity was delayed when fruit came from shaded areas, fruit from inner locations were greener than fruit from the outside and top positions. Selective picking and the association of harvest and ripening data may be important in making predictions that could reduce variability in fruit quality in the market place. MenosABSTRACT.
Characterisation of fruit quality attributes before and at harvest, during coolstorage and during ripening was made using standard and new, non-destructive devices during both the 1996 and 1997 seasons. Fruit firmness was linearly related to time when measured either by 'Kiwifirm' or penetrometer before harvest. Destructive techniques, the penetrometer and the texture analyser, were used to measure firmness and compared with non-destructive devices, the Kiwifirm and the softness meter. It is suggested that expressing rates of softening will be much more straightforward using a device such as the Kiwifirm. This device and the softness meter provided firmness data for pears that were too soft to measure by penetrometer. The effects of harvest date (1,11 and 21 March, 1996) and three crop loads on fruit maturity after a period of 6 weeks in coolstorage were investigated. Fruit size increased considerably during the 20 days before harvest, suggesting that periodical harvests need to be made in order to pick optimum size fruit each time. Maturity at harvest influenced the quality of 'Comice' stored at 0°C in air. Fruit from different harvests behaved differently in terms of softening behaviour and colour changes after 6 weeks in coolstorage. Crop load did not affect fruit quality attributes assessed after coolstorage. The characterisation of the nature and degree of within-tree and between tree fruit variability in harvest maturity and final ripening behaviour of 'Doyen... Presentar Todo |
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Palabras claves : |
HARVESTING; PEARS; STORAGE; THESIS. |
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Thesagro : |
ALMACENAMIENTO EN FRIO; FISIOLOGIA POSTCOSECHA; MADURAMIENTO; PERA; VARIEDADES. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 03047nam a2200241 a 4500
001 1001478
005 2021-03-22
008 1998 bl uuuu m 00u1 u #d
100 1 $aCABRERA, D.
245 $aMaturation and ripening of "Doyenne du comice" pears. [Thesis Master of Applied Science - M. Appl. Sc.]
260 $aPalmerston North (New Zealand): Massey University$c1998
300 $a103 p.
500 $aA thesis presented in partial fulfilment of the requirements for the degree of Master of Applied Science in Horticultural Science at Massey University, Palmerston North, New Zealand.
520 $aABSTRACT. Characterisation of fruit quality attributes before and at harvest, during coolstorage and during ripening was made using standard and new, non-destructive devices during both the 1996 and 1997 seasons. Fruit firmness was linearly related to time when measured either by 'Kiwifirm' or penetrometer before harvest. Destructive techniques, the penetrometer and the texture analyser, were used to measure firmness and compared with non-destructive devices, the Kiwifirm and the softness meter. It is suggested that expressing rates of softening will be much more straightforward using a device such as the Kiwifirm. This device and the softness meter provided firmness data for pears that were too soft to measure by penetrometer. The effects of harvest date (1,11 and 21 March, 1996) and three crop loads on fruit maturity after a period of 6 weeks in coolstorage were investigated. Fruit size increased considerably during the 20 days before harvest, suggesting that periodical harvests need to be made in order to pick optimum size fruit each time. Maturity at harvest influenced the quality of 'Comice' stored at 0°C in air. Fruit from different harvests behaved differently in terms of softening behaviour and colour changes after 6 weeks in coolstorage. Crop load did not affect fruit quality attributes assessed after coolstorage. The characterisation of the nature and degree of within-tree and between tree fruit variability in harvest maturity and final ripening behaviour of 'Doyenne du Comice' pear was assessed by measuring firmness and colour. These attributes were measured non-destructively on fruit from different positions on the trees, and subsequently measured at harvest and during ripening at 20°C after 7 weeks in coolstorage at 0°C in air. Fruit behaved differently in terms of softening behaviour and colour changes depending on their position on the tree. Fruit maturity was delayed when fruit came from shaded areas, fruit from inner locations were greener than fruit from the outside and top positions. Selective picking and the association of harvest and ripening data may be important in making predictions that could reduce variability in fruit quality in the market place.
650 $aALMACENAMIENTO EN FRIO
650 $aFISIOLOGIA POSTCOSECHA
650 $aMADURAMIENTO
650 $aPERA
650 $aVARIEDADES
653 $aHARVESTING
653 $aPEARS
653 $aSTORAGE
653 $aTHESIS
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INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
04/02/2020 |
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Actualizado : |
04/02/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
DAVIES, P. |
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Afiliación : |
PHILIP DAVIES, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Convenio Quemidur S.C. |
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Título : |
Propagation of "yerba carnicera" (Conyza bonariensis (L.) Cronq. var. bonariensis, Compositae). (Conference Paper). |
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Fecha de publicación : |
1999 |
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Fuente / Imprenta : |
Acta Horticulturae, December 1999, Nro. 502, p. 121-124. |
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Serie : |
(Acta Horticulturae; 502). |
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ISSN : |
0567-7572 |
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DOI : |
10.17660/ActaHortic.1999.502.17 |
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Idioma : |
Inglés |
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Notas : |
ISHS Acta Horticulturae 502: II WOCMAP Congress Medicinal and Aromatic Plants, Part 3: Agricultural Production, Post Harvest Techniques, Biotechnology. Symposium venue: Mendoza (Argentina). Symposium date: November 10, 1997. Editors: G. Gilbert, M. Lorenz, A. Giulietti, L. Craker, A. Mathé. Gropu: Division Horticulture for Human Health. |
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Contenido : |
ABSTRACT.
The aim of this research was to obtain information on the behaviour of the species under cultivation. Seeds were sown on December 18, 1992, in a field seedbed under plastic cover. Plants were taken to the field when 15 cm high (February 18, 1993). Three lines with 47 plants each were managed independently. Plants from Line 1 were harvested on August 4, Line 2 on August 19, and Line 3 on September 13, 1993. Mean fresh weight per plant for each line was 261, 207 and 337 g, and 88, 78 and 105 g, respectively, expressed in dry weight. The estimated yields per hectare at plantation distances of 0.6 x 0.15 m, corresponded to 29000, 23000 and 37444 kg fresh plant/ha, and the equivalent in dry matter: 9778, 8667 and 11667 kg/ha. Line 3 was harvested on a second occasion (October 27, 1993) yielding 244 g fresh matter/plant or 67 g dry matter/plant. The estimated yields per hectare on this second harvest was 27111 kg fresh weight/ha or 7444 kg dry weight/ha. The average yields for the three lines in the first harvest, in addition to a second harvest shows the possibility of achieving 57000 kg fresh weight/ha or 17444 kg dry weight/ha. For plants from the first harvest, the proportion of leaves and stems was 50:50. These data are the result of a one year experience and were not analysed statistically. |
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Palabras claves : |
Glyphosate; Herbicides. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 02268naa a2200193 a 4500
001 1060753
005 2020-02-04
008 1999 bl uuuu u00u1 u #d
022 $a0567-7572
024 7 $a10.17660/ActaHortic.1999.502.17$2DOI
100 1 $aDAVIES, P.
245 $aPropagation of "yerba carnicera" (Conyza bonariensis (L.) Cronq. var. bonariensis, Compositae). (Conference Paper).$h[electronic resource]
260 $c1999
490 $a(Acta Horticulturae; 502).
500 $aISHS Acta Horticulturae 502: II WOCMAP Congress Medicinal and Aromatic Plants, Part 3: Agricultural Production, Post Harvest Techniques, Biotechnology. Symposium venue: Mendoza (Argentina). Symposium date: November 10, 1997. Editors: G. Gilbert, M. Lorenz, A. Giulietti, L. Craker, A. Mathé. Gropu: Division Horticulture for Human Health.
520 $aABSTRACT. The aim of this research was to obtain information on the behaviour of the species under cultivation. Seeds were sown on December 18, 1992, in a field seedbed under plastic cover. Plants were taken to the field when 15 cm high (February 18, 1993). Three lines with 47 plants each were managed independently. Plants from Line 1 were harvested on August 4, Line 2 on August 19, and Line 3 on September 13, 1993. Mean fresh weight per plant for each line was 261, 207 and 337 g, and 88, 78 and 105 g, respectively, expressed in dry weight. The estimated yields per hectare at plantation distances of 0.6 x 0.15 m, corresponded to 29000, 23000 and 37444 kg fresh plant/ha, and the equivalent in dry matter: 9778, 8667 and 11667 kg/ha. Line 3 was harvested on a second occasion (October 27, 1993) yielding 244 g fresh matter/plant or 67 g dry matter/plant. The estimated yields per hectare on this second harvest was 27111 kg fresh weight/ha or 7444 kg dry weight/ha. The average yields for the three lines in the first harvest, in addition to a second harvest shows the possibility of achieving 57000 kg fresh weight/ha or 17444 kg dry weight/ha. For plants from the first harvest, the proportion of leaves and stems was 50:50. These data are the result of a one year experience and were not analysed statistically.
653 $aGlyphosate
653 $aHerbicides
773 $tActa Horticulturae, December 1999, Nro. 502, p. 121-124.
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