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United States Department of Agriculture

Agricultural Research Service

Title: Skin-Set Measurement of Breeding Selections and Related Physiology

item Lulai, Edward

Submitted to: Valley Potato Grower Magazine
Publication Type: Other
Publication Acceptance Date: July 1, 1995
Publication Date: N/A

Technical Abstract: Poor skin-set contributes to many problems including loss of tonnage and tuber softening. H20 vapor loss was 250-1000 times greater from skinned tuber surfaces than from undamaged periderm at harvest. A technique (modified Halderson periderm shear tester) to objectively measure skin set has been developed and is being refined. The unit measured the torsional force required to shear the skin from a tuber. Russets generally develope good skin set more rapidly than did smooth-skinned varieties. Smooth, red-skinned varieties generally were slower at developing good skin set. The technique for measuring skin set proved reliable when carefully performed.

Last Modified: 3/5/2015
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