Marcy is a late maturing white potato variety. It was originally bred in 1990 at

Cornell University Cornell University is a Private university, private Ivy League research university based in Ithaca, New York, United States. The university was co-founded by American philanthropist Ezra Cornell and historian and educator Andrew Dickson W ...

from a cross between the

Atlantic The Atlantic Ocean is the second largest of the world's five oceanic divisions, with an area of about . It covers approximately 17% of Earth's surface and about 24% of its water surface area. During the Age of Discovery, it was known for se ...

variety and Q155-3 variety.De Jong, W.S. et al. (2006). "Marcy: A Chipping Variety with Resistance to Common Scab and the Golden Nematode". ''American Journal of Potato Research'' 83:189-193 It is mostly used for chipping but can be used for baking and boiling. It has good storability; chip color is good even after short to medium storage. Marcy has a high yielding crop.

Botanical Features

* Marcy plants are tall and semi-erect with no pigmentation in the stem and very prominent wings. * The sprouts are red-violet with a spherical shape; the tip has a semi-open habit and is weakly pubescent with no pigment while the base is moderately pubescent with moderate pigmentation. * The leaves have an open silhouette and have a green color except on midribs and petioles, which are not pigmented. * The primary leaflets are in four pairs, are large and elliptical with the base

cordate Cordate is an adjective meaning ' heart-shaped' and is most typically used for: * Cordate (leaf shape), in plants * Cordate axe, a prehistoric stone tool See also * Chordate A chordate ( ) is a bilaterian animal belonging to the phyl ...

and the tip

acuminate The following terms are used to describe leaf plant morphology, morphology in the description and taxonomy (biology), taxonomy of plants. Leaves may be simple (that is, the leaf blade or 'lamina' is undivided) or compound (that is, the leaf blade ...

. There are few secondary and tertiary leaflets. The terminal leaflets are medium-sized and have an ovate shape with the tip acuminate and the base cordate with no wavy margins. * This plant produces no berries but does produce many white flowers with yellow orange

anthers The stamen (: stamina or stamens) is a part consisting of the male reproductive organs of a flower. Collectively, the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filamen ...

from unpigmented buds. * The tubers have a relatively large, slightly flattened oval shape with few predominantly apical and shallow eyes, with non-prominent eyebrows. * The skin is highly netted and buff colored. * Tubers have medium to high

specific gravity Relative density, also called specific gravity, is a dimensionless quantity defined as the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. Specific gravity for solids and liquids is nea ...

Agricultural Features

* Marcy has good resistance to

common scab Common scab is a plant disease of root and tuber crops caused by a small number of ''Streptomyces'' species, specifically ''Streptomyces scabies, S. scabies'', ''Streptomyces acidiscabies, S. acidiscabies'', ''Streptomyces turgidiscabie ...

and is moderately resistant to golden nematode. * Marcy has few external defects but is susceptible to internal heat

necrosis Necrosis () is a form of cell injury which results in the premature death of cells in living tissue by autolysis. The term "necrosis" came about in the mid-19th century and is commonly attributed to German pathologist Rudolf Virchow, who i ...

and hollow heart (hollowed center of potato). * Marcy is moderately susceptible to late blight and more susceptible to potato wart, PVY, and PVX.

References

{{potato cultivars Potato cultivars