Plants – Fruit – Stone fruit tree
Plant Patent
2003-06-16
2004-06-22
Campell, Bruce R. (Department: 1661)
Plants
Fruit
Stone fruit tree
Plant Patent
active
PP014938
ABSTRACT:
Latin name of the genus and species of the plant claimed:
Prunus salicina.
Variety denomination: ‘Suplumtwentyeight’.
BACKGROUND AND SUMMARY OF THE INVENTION
This invention relates to the discovery and asexual propagation of a new and distinct variety of plum tree, herein after referred to by the cultivar name ‘Suplumtwentyeight’. The variety originated by hybridization performed by Bruce Mowrey. The new variety was first selected and evaluated by David Cain on Sun World Experimental Ranch 75 near Wasco, Calif. in Kern County. The new variety is characterized by heavy and consistent production of large (65 mm diameter), firm fruit that ripens early, during the middle of June in the Bakersfield, Calif. area. Fruit of ‘Suplumtwentyeight’ have smooth black-colored skin and flesh that develops red color as they ripen. Eating quality is excellent with 18° brix, plentiful juice, and skin flavor that is neutral.
The parent varieties were first crossed in 1993, with the date of planting of February, 1994, and the date of first flowering being March, 1997. The new plum variety was first asexually propagated by Terry Bacon near Wasco, Kern County, Calif. in December, 2001, by grafting onto Nemaguard rootstock.
The seed parent is Sun World breeding selection, ‘91P-001’ (unpatented), which was selected from a progeny of Sun World breeding selection ‘232-205’ (unpatented) crossed with pollen from Sun World selection ‘275-
136
’
(unpatented). The new variety is distinguished from its seed parent by ripening 16 days later and having fruit that averages 65 mm as compared to ‘91P-001’ with 55 mm. Additionally, the new variety develops red flesh as it ripens while ‘91P-001’ has amber flesh. The pollen parent was an unknown Sun World breeding selection.
The new variety most nearly resembles ‘Suplumeleven’ (U.S. Plant Pat. No. 4,902). It may be distinguished from ‘Suplumeleven’ by ripening 20 days earlier. The new variety ripens approximately the same time as ‘Santa Rosa’ (unpatented) but develops red flesh while ‘Santa Rosa’ has amber-colored flesh, and is larger (65 mm compared to 55 mm diameter with ‘Santa Rosa’).
The new plum tree variety cv. ‘Suplumtwentyeight’ has been shown to maintain its distinguishing characteristics.
REFERENCES:
patent: PP4902 (1982-10-01), Weinberger
Bacon Terry A.
Cain David W.
Mowrey Bruce D.
Campell Bruce R.
Haas W C
Knobbe Martens Olson & Bear LLP
Sun World International Inc.
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