Plants – Rose – Climber
Plant Patent
1999-11-22
2002-03-19
Campell, Bruce R. (Department: 1661)
Plants
Rose
Climber
Plant Patent
active
PP012481
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a new and distinct variety of papaya (
Carica papaya L.
) plant, which will hereinafter be denominated varietally as ‘Laie Gold’. More particularly, the invention relates to the asexual propagation of
Carica papaya L.
cv. ‘Laie Gold’. The new variety is a fresh market papaya for use in local markets as well as for long distance shipping.
2. Description of the Art
‘Laie Gold’ is an F1 (first generation) hybrid produced by crossing Hawaii's major large-fruited variety, ‘Kamiya’ (pollen parent, unpatented) with an unnamed plant from the F2 progeny (seed parent) of the hybrid papaya variety ‘UH Rainbow’ (U.S. Plant patent application Ser. No. 09/300,960) which has resistance to papaya ringspot virus (PRSV), an aphid-transmitted virus which is a major disease pathogen affecting papaya production worldwide. ‘UH Rainbow’ is an F1 hybrid produced by crossing Hawaii's standard export variety ‘Kapoho’ (unpatented) with a genetically engineered, PRSV-resistant papaya, ‘UH SunUp’ (U.S. Plant patent application Ser. No. 09/301,389), a red-fleshed papaya derived from the cultivar ‘Sunset’ (unpatented). The pollen parent ‘Kamiya’ grown in Waikane, Hi., is a selection of the University of Hawaii variety ‘Waimanalo’ (unpatented).
The first generation (F1) seedlings from an unnamed plant of ‘UH Rainbow’ F2בKamiya’ crosses were grown in Laie, Kahaluu, and Waikane, Hi. Trees were measured monthly for trunk diameter, tree height, and height and date of first flowers. At fruiting, 9 months after transplanting to the fields, fruits were harvested monthly for one year to record sugar, firmness, weight, shape, flavor, and color.
The new hybrid variety of papaya plant has been asexually reproduced by both micropropagation and rooted cuttings at the U.S. Department of Agriculture-Agricultural Research Service/Hawaii Agriculture Research Center research laboratory and greenhouse in Aiea and Maunawili, Hi., respectively. Trees reproduced by both of these methods have shown that the characteristics run true to the original seedling trees. Fruit and tree characteristics are therefore transmitted through succeeding propagations.
SUMMARY OF THE INVENTION
The new variety cv. ‘Laie Gold’ may be distinguished from other commercial papaya cultivars known to me by a combination of characteristics, including larger fruit size, increased tree vigor, absence of occasional bitterness and unpleasant, strong odor during the cooler season, a lower incidence of carpellody and sterility, PRSV-resistance, good fungus and nematode tolerance (good rooting capacity), early and low fruit bearing, and attractive globular pyriform fruit with delicate coconut- or mango-like taste and moderately firm flesh, giving good eating, handling, and shipping qualities.
REFERENCES:
U.S. patent application Ser. No. 09/300,960, ‘UH Rainbow’.
U.S. patent application Ser. No. 09/301,398, ‘UH Sun Up’.
Bell Kent L.
Campell Bruce R.
Connor Margaret A.
Fado John D.
Silverstein M. Howard
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