Domoto

Domoto

Walnut tree named ‘Domoto’

PUBLIC DOMAIN

Patent expired November 17, 2019. This plant is in the public domain — anyone may propagate and sell it.

No term adjustment or disclaimer is recorded against this patent, so this is the full statutory term — twenty years from the filing date.

Figure 4 of US plant patent PP12898, the photograph of Domoto printed in the patent.

Figure 4 from US Plant Patent PP12898, reproduced as printed. Photographs in a plant patent are taken by the applicant. Reproduction of the patent document is permitted; the image is shown whole and uncropped for that reason.

Abstract

A cold-resistant Persian walnut cultivar originating as an open pollinated seedling from a population of seedlings, for which the identity of the female parent was not recorded, that were planted at the Iowa State University Horticulture Research Farm, Ames, Iowa, USA in 1971, and evaluated as ISU71-EI8. Past literature and growth characteristics suggest that one of the parents was probably ‘Hansen’ (unpatented) Persian walnut. The other parent may have been ‘Colby’ (unpatented) Persian walnut. Tree has consistently exhibited minimal shoot die-back when exposed to late-fall/early-winter, mid-winter, and late-winter freezes; when exposed to minus 35.6 degrees Celsius, trees suffered only minor to moderate shoot die-back while other cultivars and selections were killed or severely injured. Catkin survival has been recorded following expose to minus 32 degrees Celsius. Tree is small, slow growing, moderately vigorous; globular in shape with a somewhat upright branching habit; leafs out early, and defoliates relatively late. Catkins are medium sized; abundant; release pollen mid-season, about 5 days after first pistillate flowers are receptive. Pistillate flowers occur mostly as doubles produced terminally on spurs with some produced laterally on shoots; receptive early mid-season with about a 10 day overlap of staminate and pistillate bloom; considered partially dichogamous and does best with cross pollination. Fruit: ripen in late-September to early-October; nut roundish oblong, compressed, slightly to moderately beaked and rounded at base; medium size (101 nuts per kilogram, 46 per pound); shell thin, moderately hard, well sealed, relatively smooth; cavity well filled, kernel tight and difficult to remove in halves; kernel moderately small to medium sized, plump, richly flavored, oily, somewhat astringent, quality good. Productivity low with out cross pollination, medium with cross pollination. Suitable as a nut producing ornamental in nothern climates where commercial cultivars cannot be grown. Adapted to zones 5a and 4b of the USDA Plant Hardiness Zone Map.

Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.

I claim: 1. A new and distinct, cold-resistant cultivar of Persian walnut tree named ‘Domoto’ substantially as shown and described that withstands exposure to minus 35.6 degrees Celsius with minimal shoot injury, produces catkins that withstand exposure to minus 32 degrees Celsius, that is of small stature, and produces, on average,

Read the full patent: US Plant Patent PP12898 in full — the complete specification, every figure, and the file history.

The record

Abstract