[Tom Wagner]

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Sweet potato plant named ‘Mahon Yam’
United States Patent PP20666

A new variety of sweetpotato, Ipomoea batatas, identified as ‘Mahon Yam’ is disclosed having superior eating quality. ‘Mahon Yam’ is characterized by an orange fleshed root that when cooked is sweet, moist and not stringy or fibrous (i.e. creamy). The plant itself is distinguished by unusual leaves for an eating quality sweetpotato, they are seven (7) lobed.

The `Mahon Yam` variety resulted from continuous, rigorous selection and reselection from over 25 years for eating quality, productivity and visually appealing shape. `Mahon Yam` originated from a discovery selection of plants grown from storage root derived sprouts from a group of storage roots received from an old farmer in Chesterfield County, S.C. The name of the parent variety is unknown. After some years, the yearly reselection sweetpotatoes were informally compared to the parent variety from the original farm and found to be a darker orange, more attractive, flesh color as well as being sweeter with a smoother mouth feel. The `Mahon Yam` variety was continued to be cultivated to be improved by further election each and every year until being sent to the NCSU Micropropogation Unit. This particular mutation, the `Mahon Yam` is excellent for eating with a unique leaf shape for vegetable sweetpotatoes. The best potatoes were sent to the NCSU Micropropagation Unit in order to eliminate viruses and pathogens via mericulture clean up. Asexual reproduction: `Mahon Yam` has been asexually propagated via storage roots derived sprouts from continually reselected plants and storage roots since its original selection over twenty-five years ago. Storage and plant selection was done at 310 Third Street, Cheraw, S.C. Each year the most productive, best tasting were selected and the storage roots were separately stored for the next years trials at this location.

Inventors:
Mahon, John A. (310 Third St., Cheraw, SC, US)
Application Number:
12/217597
Publication Date:
01/19/2010
Filing Date:
07/07/2008
Export Citation:
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Primary Class:
PLT/256
International Classes:
A01H5/00
Field of Search:
PLT/258, PLT/256
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