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US PP7,172 PGranted
Strawberry plant called Irvine
AssigneeThe Regents of the University of California
InventorsVictor Voth, Royce S. Bringhurst
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AssigneeThe Regents of the University of California
InventorsVictor Voth, Royce S. Bringhurst
Estimating the term…
This invention relates to a new and distinct day-neutral variety of strawberry plant called `Irvine`. The variety has a chilling requirement lower than `Selva`. It has a high yield and produces a large, firm fruit which is symmetrical and ranges from conic medium to flat and wedgy in shape. The variety is quite flexible in that it can be planted commercially or in the home garden and the fruit is recommended for the fresh market or for processing. The fruit of `Irvine` is juicier and has a better flavor than `Selva`.
The new and distinct variety of strawberry plant herein described and illustrated and identified by the characteristics enumerated above.
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This invention relates to a new and distinctive day-neutral type strawberry cultivar designated `Irvine` which is the result of a cross of `Douglas` (U.S. Plant Pat. No. 4,487).times.`Muir` (U.S. Plant Pat. No. 6,558), made in 1982.
`Irvine` first fruited at the University of California South Coast Field Station, Irvine, Calif. in 1983, where it was selected and designated originally as Cal 82:14-603. It was tested later as advanced selection CN 14.
`Irvine` has been propagated asexually by runners and has been tested at various University of California field stations and research facilities and to a limited extent in growers' fields under Test Agreement.
In the photographs:
FIG. 1 shows typical early season growth, flowering and fruiting characteristics of the plant.
FIG. 2 shows a typical early-season mature leaf from a fruiting plant.
`Irvine` commences fruiting about three months after planting, whether freshly dug or cold storage plants are used, and regardless of planting time provided that satisfactory growing conditions prevail. `Irvine` is a stronger day-neutral than `Selva` (U.S. Plant Pat. No. 5,266), or `Muir` but not quite as strong as `Hecker` (U.S. Plant Pat. No. 4,507) or `Fern` (U.S. Plant Pat. No. 3,267). The difference is most evident in the nursery where only the mother and first daughter plants of `Selva` and to a somewhat greater extent `Muir` tend to flower and fruit strongly, whereas most of the daughter plants of `Hecker` and `Fern` and to a somewhat lesser extent `Irvine` do so. Thus, ranking them in order of the tendency for plants to flower in the nursery in order would be: `Hecker`--`Fern`--`Irvine`--`Muir`--`Selva`. All are heterozygous for the day-neutral trait.
`Irvine` is of particular interest for winter plantings in situation where `Selva` is used successfully.
Plants and foliage: Fruiting `Irvine` plants are more erect in growth habits than those of `Muir` and much more so than those of `Selva`. Leaf characteristics from mid-summer 1988 central coast grown fruiting plants of `Irvine` are compared with those of `Muir`, `Selva`, `Fern` and `Douglas` in Table 1: