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United States Department of Agriculture

Agricultural Research Service

Research Project: Genetic Improvement of Fruit Crops through Functional Genomics and Breeding

Location: Appalachian Fruit Research Laboratory

Title: 'Gem': a new pear cultivar from the USDA pear breeding program

Authors
item Bell, Richard
item Castagnoli, Steve -
item Einhorn, Todd -
item Turner, Janet -
item Spotts, Robert -
item Moulton, Gary -
item Reighard, Gregory -
item Shane, William -

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: April 24, 2014
Publication Date: July 14, 2014
Citation: Bell, R.L., Castagnoli, S., Einhorn, T., Turner, J.D., Spotts, R., Moulton, G.A., Reighard, G.L., Shane, W.W. 2014. 'Gem': a new pear cultivar from the USDA pear breeding program [abstract]. International Pear Symposium, Program and Abstracts. p. 49.

Technical Abstract: ‘Gem’ is a new cultivar which combines excellent appearance, fruit quality, and long storage potential with precocious and high yields. Fruit color is a light green when mature and frequently has a red blush on the sun-exposed side. It can be eaten immediately after harvest and after storage without softening, due to a crisp, juicy texture; in this condition, the flavor will be sweet. The fruit will also soften to a melting texture if stored for two months in common air refrigeration after which it will develop a lightly aromatic flavor. Harvest maturity begins eight days after ‘Bartlett’ but can be harvested over a three-week period without loss of storability up to five months. Trees on OHxF 97 rootstock at Hood River, Oregon, have flowered and fruited as early as two years after planting with early yield, five-year cumulative yields, and yield efficiency greater than ‘Beurré d’Anjou’. Fruit size on un-thinned trees averaged 150g, but thinning and delayed harvest increased fruit size to 259 g. At Kearneysville, West Virginia, resistance to epiphytotic fire blight resistance was moderate, but resistance to artificial shoot infection was high. ‘Gem’ was jointly released by the United States Department of Agriculture, Oregon State University, Michigan State University, and Clemson University.

Last Modified: 10/25/2014
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