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Abscission, storability, and fruit q...

Smith, Erick David.

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Abscission, storability, and fruit quality of mechanically harvested fresh market stem-free sweet cherry.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Abscission, storability, and fruit quality of mechanically harvested fresh market stem-free sweet cherry./
Author:	Smith, Erick David.
Description:	191 p.
Notes:	Source: Dissertation Abstracts International, Volume: 70-11, Section: B, page: 6627.
Contained By:	Dissertation Abstracts International70-11B.
Subject:	Agriculture, Horticulture. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3382127
ISBN:	9781109461176

Abscission, storability, and fruit quality of mechanically harvested fresh market stem-free sweet cherry.
Smith, Erick David.

Abscission, storability, and fruit quality of mechanically harvested fresh market stem-free sweet cherry. - 191 p.

Source: Dissertation Abstracts International, Volume: 70-11, Section: B, page: 6627.

Thesis (Ph.D.)--Washington State University, 2009.

A prototype mechanical sweet cherry harvester has been developed by the USDA in response to industry's need to improve labor efficiency. Commercial acceptance of the harvest system will require knowledge of cultural practices, stem-free fruit, and fresh market fruit quality. This research program sought to (1) identify effects of ethephon (2-chloroethyl phosphonic acid) on sweet cherry pedicel-fruit retention force and fruit quality, (2) study the effect of ethephon and mechanical harvesting on fruit storability, (3) study the role of the fruit pedicel on storability and weight loss, and (4) document metabolic changes in fruit tissue induced by ethephon. Ethephon applied at rates as low as 1.2 L ha-1 at 10 days prior to harvest was effectively reduced the pedicel-fruit retention force (PFRF) to ca. 400 g in 'Bing', facilitating mechanical harvest. Further, the cultivar 'Skeena' exhibits a naturally decline in PFRF to levels suitable for mechanical harvest. Conversely, 'Chelan' is non-responsive to ethephon and not suitable for mechanical harvest.

ISBN: 9781109461176Subjects--Topical Terms:

1017832
Agriculture, Horticulture.

Abscission, storability, and fruit quality of mechanically harvested fresh market stem-free sweet cherry.
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020 $a 9781109461176
035 $a (UMI)AAI3382127
035 $a AAI3382127
040 $a UMI $c UMI
100 1 $a Smith, Erick David. $3 1676781
245 1 0 $a Abscission, storability, and fruit quality of mechanically harvested fresh market stem-free sweet cherry.
300 $a 191 p.
500 $a Source: Dissertation Abstracts International, Volume: 70-11, Section: B, page: 6627.
500 $a Adviser: Matthew D. Whiting.
502 $a Thesis (Ph.D.)--Washington State University, 2009.
520 $a A prototype mechanical sweet cherry harvester has been developed by the USDA in response to industry's need to improve labor efficiency. Commercial acceptance of the harvest system will require knowledge of cultural practices, stem-free fruit, and fresh market fruit quality. This research program sought to (1) identify effects of ethephon (2-chloroethyl phosphonic acid) on sweet cherry pedicel-fruit retention force and fruit quality, (2) study the effect of ethephon and mechanical harvesting on fruit storability, (3) study the role of the fruit pedicel on storability and weight loss, and (4) document metabolic changes in fruit tissue induced by ethephon. Ethephon applied at rates as low as 1.2 L ha-1 at 10 days prior to harvest was effectively reduced the pedicel-fruit retention force (PFRF) to ca. 400 g in 'Bing', facilitating mechanical harvest. Further, the cultivar 'Skeena' exhibits a naturally decline in PFRF to levels suitable for mechanical harvest. Conversely, 'Chelan' is non-responsive to ethephon and not suitable for mechanical harvest.
520 $a The effect of the harvester on 'Bing' and 'Skeena' fruit quality is minimal in comparison to hand harvested fruit. Commercially assessed fruit cullage was ca. 23% for both harvest methods and cultivars. Generally, fruit storability was positively related to fruit size. In 2007, untreated stem-free 'Bing' lost 29% more weight than fruit with stems. However, the weight loss averaged ca. 6.5% for both stem-free and stemmed fruit in 2008. There was no difference in postharvest weight loss between 'Skeena' fruit with and without pedicels in both years. 'Bing' pedicels appear to be non-conductive to water transport. In contrast, 'Skeena' exhibited dye transport through the pedicel from the stylar incision in 2007 but not in 2008. Pedicels are susceptible to higher rates of browning, particularly in response to refrigeration in the commercial cold chain. Finally, metabolic profiling of ethephon-treated fruit reveal metabolic shift in simple sugars, malic acid, and color (cyanidin 3-glucoside/korumanin). Overall ethephon had little effect on quality. In general, effects of mechanical harvest are minimal upon fruit quality and storability showing promise for stem-free fresh market sweet cherries.
590 $a School code: 0251.
650 4 $a Agriculture, Horticulture. $3 1017832
690 $a 0471
710 2 $a Washington State University. $3 678588
773 0 $t Dissertation Abstracts International $g 70-11B.
790 1 0 $a Whiting, Matthew D., $e advisor
790 $a 0251
791 $a Ph.D.
792 $a 2009
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3382127