Articles
Effect of different bag type on fruit quality in Greensis pear (Pyrus pyrifolia Nakai)
Article number
1353_42
Pages
341 – 346
Language
English
Abstract
Pear cultivation in Korea has decreased by 30% over the past 10 years and overseas export volume is declining.
The decline is due to monoculture of the cultivar Shingo, changes in consumer trends, and large-size fruit production. Shingo pears can be grown as small fruit but have poor quality.
The small fruit cultivar Greensis is gaining popularity as a promising cultivar. Greensis is an interspecies hybrid resulting from a cross between Whangkeumbae and Bartlett cultivars.
The average fruit weight is ~450 g, the average sugar content is ~12.4 °Brix, and the harvest time is ~September 25; 35 days earlier than Shingo. To expand Greensis cultivation, supply and export, more field-oriented research is needed; especially in terms of the development of russetting and cork (Straube et al., 2021). Herein, the full bloom date of Greensis was April 25. On June 16, 53 days after full bloom, fruit were covered with various protective bags.
Four bag types were evaluated including (A) bags to prevent penetration of light, (B) yellow-gray double-layered bags, (C) single-layer white bags, and (D) double-layer white bags.
Bags A>B had the highest air resistance.
In particular, in bag A was an inner paper having about 3 times higher air resistance than the outer paper.
Results demonstrate that treatments A and B showed yellow skin and treatments C and D showed green skin.
The choice of the bag type is very important as the fruit skin quality varies depending on the bag color of the bag.
This is because the amount of sunlight transmitted varies depending on the color of the bag.
Gray bags are generally known to absorb significant light.
However, radiation heat blocking varies depending on the bag thickness.
Herein we investigate the color change when commercially available bags were used to cover new cultivars.
The decline is due to monoculture of the cultivar Shingo, changes in consumer trends, and large-size fruit production. Shingo pears can be grown as small fruit but have poor quality.
The small fruit cultivar Greensis is gaining popularity as a promising cultivar. Greensis is an interspecies hybrid resulting from a cross between Whangkeumbae and Bartlett cultivars.
The average fruit weight is ~450 g, the average sugar content is ~12.4 °Brix, and the harvest time is ~September 25; 35 days earlier than Shingo. To expand Greensis cultivation, supply and export, more field-oriented research is needed; especially in terms of the development of russetting and cork (Straube et al., 2021). Herein, the full bloom date of Greensis was April 25. On June 16, 53 days after full bloom, fruit were covered with various protective bags.
Four bag types were evaluated including (A) bags to prevent penetration of light, (B) yellow-gray double-layered bags, (C) single-layer white bags, and (D) double-layer white bags.
Bags A>B had the highest air resistance.
In particular, in bag A was an inner paper having about 3 times higher air resistance than the outer paper.
Results demonstrate that treatments A and B showed yellow skin and treatments C and D showed green skin.
The choice of the bag type is very important as the fruit skin quality varies depending on the bag color of the bag.
This is because the amount of sunlight transmitted varies depending on the color of the bag.
Gray bags are generally known to absorb significant light.
However, radiation heat blocking varies depending on the bag thickness.
Herein we investigate the color change when commercially available bags were used to cover new cultivars.
Authors
Kyeong-Jin Kang, Jeong-Hak Seo, Hong-Ki Yoon, U-Su Lee, Han-na Park
Keywords
pear, Greensis, russeting, cork spot, bagging, fruit size
Groups involved
- Division Temperate Tree Fruits
- Division Temperate Tree Nuts
- Division Vegetables, Roots and Tubers
- Division Plant-Environment Interactions in Field Systems
- Division Horticulture for Human Health
- Division Postharvest and Quality Assurance
- Division Horticulture for Development
- Division Tropical and Subtropical Fruit and Nuts
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