Latin name of the genus and species of the plant claimed: Fragaria ananassa.
Variety denomination: ‘PS-5298’.
BACKGROUND OF THE INVENTION
The present invention relates to a new and distinct strawberry variety designated as ‘PS-5298’. This new variety is a result of a controlled cross made by the inventors, Stephen M. Ackerman, Steven D. Nelson, and Michael D. Nelson, in 1997 between strawberry variety ‘PS-592’ (patented, U.S. Plant Pat. No. 9,903) and strawberry variety designated ‘Aromas’ (patented, U.S. Plant Pat. No. 10,451). It is unknown as to which parent variety is the seed parent and which parent variety is the pollen parent. The variety is botanically known as Fragaria ananassa.
The seedling resulting from the aforementioned cross was asexually propagated by stolons in a nursery located in Siskiyou County, Calif., and was subsequently selected by the inventors from a controlled breeding plot in Salinas, Calif., in 1999. After its selection, the new variety was further asexually propagated by stolons in both Siskiyou County, Calif. and San Joaquin County, Calif. The new variety was extensively tested over the next several years in fruiting fields of Salinas, Calif. This propagation has demonstrated that the combination of traits disclosed herein as characterizing the new variety are fixed and remain true to type through successive generations of asexual reproduction.
BRIEF SUMMARY OF THE INVENTION
‘PS-5298’ is primarily adapted to the climate and growing conditions of the central coast of California. This region provides the necessary winter temperatures required for it to produce a strong vigorous plant and to remain in fruit production from April through November. The nearby Pacific Ocean provides the needed humidity and moderate temperatures to maintain fruit quality during the spring and summer production months.
The following traits have been repeatedly observed and are determined to be unique characteristics of ‘PS-5298’, which in combination distinguish this strawberry plant as a new and distinct variety:
-
- 1. Large plant size;
- 2. Medium to large fruit size;
- 3. Medium to red fruit color;
- 4. Spreading to reflexed calyx segments;
- 5. Medium to strong skin firmness;
- 6. Good fruit production with good flavor;
- 7. Medium green foliage with glossy texture and medium to strong interveinal blistering; and
- 8. Medium to large foliage, concave to flat in shape.
The strawberry varieties that are believed to be most closely related to the new strawberry variety ‘PS-5298’ are the parental strawberry variety ‘PS-592’ (patented, U.S. Plant Pat. No. 9,903) and the strawberry variety ‘PS-1150’ (patented, U.S. Pat. No. 10,780).
In comparison to the similar strawberry varieties ‘PS-592’ and ‘PS-1150’, the new strawberry variety ‘PS-5298’ differs by the following combination of characteristics as described in Table 1:
TABLE 1 |
|
|
|
‘PS-592’ |
‘PS-1150’ |
|
|
(U.S. Plant |
(U.S. Plant |
|
|
Pat. No. |
Pat. No. |
Characteristic |
‘PS-5298’ |
9,903) |
10,780) |
|
1. Color of mature fruit |
Red |
Red to red |
Red |
|
|
orange |
2. Average fruit weight |
23.5 |
23.1 |
17.6 |
(gm) |
3. Marketable yield |
1,362 |
1,392 |
1,010 |
(gm/plt) |
4. Attitude of calyx |
Spreading |
Spreading to |
Spreading to |
|
to reflexed |
reflexed |
collapsing |
5. Firmness of skin |
Medium |
Medium |
Strong |
|
to strong |
6. Time of first harvest |
Early |
Early |
Late |
7. Plant size |
Large |
Large |
Medium |
8. Foliage color (upper |
Medium |
Medium green |
Medium green |
side) |
green |
9. Interveinal leaf |
Medium |
Medium to |
Weak to |
blistering |
to strong |
strong |
medium |
10. Foliage glossiness |
Medium |
Strong |
Weak |
|
to strong |
11. Foliage size |
Medium |
Large |
Small |
|
to large |
12. Fruiting truss |
Ranges from |
Ranges from |
Above |
position relative to |
level with to |
level with to |
foliage |
beneath |
beneath |
|
In comparison to the parental strawberry variety ‘Aromas’, the new strawberry variety ‘PS-5298’ differs by the following combination of characteristics:
-
- 1. ‘PS-5298’ is partially remontant while ‘Aromas’ is day-neutral;
- 2. the shape of the foliage in cross section for ‘PS-5298’ is slightly concave to flat while ‘Aromas’ is mostly flat to convex;
- 3. the insertion of the achenes for ‘PS-5298’ is level with the surface of the fruit while ‘Aromas’ is below the surface of the fruit; and
- 4. the firmness of the fruit flesh for ‘PS-5298’ ranges from medium to firm while ‘Aromas’ is very firm.
For identification a series of AFLP molecular markers have been determined for this new variety.
BRIEF DESCRIPTIONS OF THE DRAWINGS
The accompanying color photographs illustrate the overall appearance of typical specimens of the new strawberry variety ‘PS-5298’, at various stages of development as true as it is reasonably possible with color reproductions of this type. Color in the photographs may differ slightly from the color value cited in the botanical description which accurately describe the color of ‘PS-5298’. The depicted plant and plant parts of the new strawberry variety ‘PS-5298’ were taken in Salinas, Calif., and are approximately 8 to 9 months old.
FIG. 1 shows typical fruiting field characteristics taken in the month of June, 2006;
FIG. 2. shows a close-up view of typical leaf structure taken in the month of June, 2006;
FIG. 3 shows typical mature and immature field fruit taken in the month of June, 2006; and
FIG. 4 shows a close-up view of fruit taken in the month of July, 2006.
DETAILED BOTANICAL DESCRIPTION
‘PS-5298’ has not been observed under all possible environmental conditions. The characteristics of the new variety may vary in detail, depending upon variations in environmental factors, including weather (temperature, humidity and light intensity), day length, soil type and location.
The aforementioned photographs, together with the following description of the new variety ‘PS-5298’, unless otherwise noted, is based on observations taken during the 2006 growing season in Salinas, Calif. These measurements and ratings were taken from plants of ‘PS-5298’ dug from a high-elevation nursery located in Siskiyou County, Calif., during the middle of October 2005 and planted approximately 3 weeks later in Salinas, Calif. The approximate age of the observed plants is 7 to 10 months. Yield observations and fruit quality characteristics are averaged from four years of data collected from the 2003 through 2006 growing seasons. Flower measurements and characteristics are from secondary flowers unless otherwise noted. Fruit characteristics and measurements are from secondary fruit unless otherwise noted.
Color terminology where noted follows the Munsell Book of Colors, Munsell Color, Baltimore, Md. (1976).
The following Tables 2-8 describe fruit, plant, stolon, foliage, fruiting truss, flower and pest/disease characteristics of the new strawberry ‘PS-5298’ in comparison to the similar strawberry varieties ‘PS-592’ and ‘PS-1150’.
TABLE 2 |
|
FRUIT CHARACTERISTICS |
|
|
‘PS-592’ |
‘PS-1150’ |
|
|
(U.S. Plant |
(U.S. Plant |
|
|
Pat. No. |
Pat. No. |
Characteristic |
‘PS-5298’ |
9,903) |
10,780) |
|
Color of mature fruit |
7.5R 3/10 to |
7.5R 3/12 to |
7.5R 4/10 to |
|
4/10 |
4/12 |
3/8 |
|
Red |
Red to orange |
Red |
|
|
red |
Color of internal flesh |
7.5R 4/10 to |
7.5R 5/10 to |
7.5R 4/10 to |
|
4/12 |
4/10 |
4/12 |
|
Medium red |
Light red |
Medium red |
Length (cm) |
4.9 |
4.8 |
4.2 |
Width (cm) |
4.3 |
4.3 |
3.7 |
Ratio length/width |
1.15 |
1.13 |
1.14 |
|
Slightly |
Slightly longer |
Slightly longer |
|
longer than |
than broad |
than broad |
|
broad |
Calyx diameter (cm) |
5.0 |
5.0 |
4.2 |
Average weight (gm) |
23.5 |
23.1 |
17.6 |
Size |
Medium to |
Medium to |
Small |
|
large |
large |
Achene color |
5Y 6/8 to |
5Y 6/8 to 7.5R |
5Y 6/8 to 7.5R |
|
7.5R 3/8 |
3/8 |
3/8 |
Achenes per berry |
285 |
304 |
293 |
Achene weight (mg) |
0.64 |
0.61 |
0.56 |
Marketable yield (gm/plt) |
1,362 |
1,392 |
1,010 |
Predominant shape |
Conical |
Conical |
Conical |
Difference in shapes |
Moderate |
Moderate |
Slight |
between primary and |
secondary fruit |
Band without achenes |
Absent or |
Absent or |
Absent or |
|
very narrow |
very narrow |
very narrow |
Unevenness of surface |
Weak |
Weak |
Absent or |
|
|
|
very weak |
Evenness of color |
Slightly |
Slightly uneven |
Even |
|
uneven to |
to even |
|
even |
Glossiness |
Medium to |
Medium to |
Strong |
|
strong |
strong |
Insertion of achenes |
Level with |
Level with |
Level with |
|
surface |
surface |
surface |
Insertion of calyx |
Ranges from |
Ranges from |
Ranges from |
|
level with to |
level with to |
level with to |
|
above fruit |
above fruit |
above fruit |
Attitude of the calyx |
Spreading to |
Spreading to |
Spreading to |
|
reflexed |
reflexed |
collapsing |
Size of calyx in relation |
Slightly |
Slightly larger |
Slightly larger |
to fruit diameter |
larger |
Adherence of calyx |
Strong |
Strong |
Strong |
Firmness of skin |
Medium to |
Medium |
Strong |
|
strong |
Firmness of flesh |
Medium to |
Medium |
Medium to |
|
firm |
|
firm |
Distribution of red color |
Marginal and |
Marginal and |
Marginal and |
of the flesh |
central |
central |
central |
Hollow center expression |
Moderate |
Moderate to |
Moderate to |
|
|
strong |
strong |
Flavor |
Good |
Very good |
Fair |
Soluble solids (% brix) |
8.0 |
8.0 |
7.4 |
Time of first flowering |
Early |
Early |
Late |
Time of first harvesting |
Early |
Early |
Late |
Harvest period |
Late March |
Late March to |
Mid April to |
|
to early |
early December |
early December |
|
December |
Type of bearing |
Partially |
Partially |
Partially |
|
remontant |
remontant |
remontant |
|
TABLE 3 |
|
PLANT CHARACTERISTICS |
|
|
‘PS-592’ |
‘PS-1150’ |
|
|
(U.S. Plant |
(U.S. Plant |
|
|
Pat. No. |
Pat. No. |
Characteristic |
‘PS-5298’ |
9,903) |
10,780) |
|
Height (cm) |
30.8 |
31.0 |
30.0 |
Spread (cm) |
36.8 |
35.1 |
28.8 |
Crowns/plant |
5.3 |
5.0 |
5.0 |
Size |
Large |
Large |
Medium |
Habit |
Globose |
Globose |
Globose |
Density |
Medium |
Medium to open |
Medium |
Vigor |
Strong |
Strong |
Medium |
|
TABLE 4 |
|
STOLON CHARACTERISTICS |
|
|
‘PS-592’ |
‘PS-1150’ |
|
|
(U.S. Plant |
(U.S. Plant |
|
|
Pat. No. |
Pat. No. |
Characteristic |
‘PS-5298’ |
9,903) |
10,780) |
|
Average number per |
1.1 |
1.2 |
0.8 |
plant fruiting field |
Few to |
Few to medium |
Few |
|
medium |
Anthocyanin coloration |
7.5R 5/6 to |
7.5R 5/6 to 5/4 |
7.5R 4/6 to 5/6 |
|
6/6 |
Anthocyanin intensity |
Weak |
Medium |
Medium to |
|
|
|
strong |
Diameter at bract (mm) |
4.7 |
4.4 |
4.2 |
|
Thick |
Thick |
Medium |
Pubescence |
Medium to |
Medium |
Medium to |
|
strong |
|
strong |
|
TABLE 5 |
|
FOLIAGE CHARACTERISTICS |
|
|
‘PS-592’ |
‘PS-1150’ |
|
|
(U.S. Plant |
(U.S. Plant |
|
|
Pat. No. |
Pat. No. |
Characteristic |
‘PS-5298’ |
9,903) |
10,780) |
|
Foliage: |
|
|
|
Color of upper |
7.5GY 4/4 to 3/4 |
7.5GY 4/4 |
7.5GY 4/4 |
surface |
Medium |
Medium green |
to 3/4 |
|
green |
|
Medium green |
Color of under side |
5GY 5/4 to 6/4 |
5GY 5/4 to 6/4 |
5GY 5/4 to 6/4 |
|
Light grey green |
Light grey |
Light grey |
|
|
green |
green |
Petiole length (cm) |
23.1 |
21.1 |
19.0 |
Petiole diameter |
3.8 |
4.7 |
3.1 |
(mm) |
Petiolule length |
14.0 |
15.7 |
9.3 |
(mm) |
Stipule length (mm) |
20.7 |
20.8 |
14.5 |
Stipule width (mm) |
8.3 |
8.5 |
8.4 |
Size bract leaflets |
Small |
Small to |
Small |
|
|
medium |
Shape in cross |
Slightly concave |
Slightly |
Slightly |
section |
to flat |
concave |
concave to |
|
|
|
slightly convex |
Interveinal blistering |
Medium to strong |
Medium |
Weak to |
|
|
to strong |
medium |
Glossiness |
Medium to strong |
Strong |
Weak |
Number of leaflets |
3 |
3 |
3 to 4 |
Petiole pubescence |
Moderate |
Moderate to |
Moderate to |
|
to sparse |
sparse |
sparse |
Petiole attitude |
Strongly outward |
Strongly |
Strongly |
of hairs |
|
outward |
outward |
Stipule anthocyanin |
Weak |
Medium |
Absent or very |
coloration |
|
|
weak |
Stipule anthocyanin |
10RP 4/10 to 4/12 |
10RP 4/8 |
10RP 5/6 to 5/8 |
color |
Red purple |
to 4/10 |
Red purple |
|
|
Red purple |
Petiole color |
5GY 7/6 to 7/8 |
5GY 7/6 to 7/8 |
5GY 7/6 to 7/8 |
|
Medium yellow |
Medium yellow |
Medium yellow |
|
green |
green |
green |
Petiolule color |
5GY 7/6 to 7/8 |
5GY 7/6 to 7/8 |
5GY 7/6 to 7/8 |
|
Light to medium |
Light to |
Light to |
|
green |
medium green |
medium green |
Stipule color |
5GY 5/6 to 6/6 |
5GY 5/6 to 6/6 |
5GY 7/6 to 7/8 |
|
Light to medium |
Light to |
Light to |
|
green |
medium green |
medium green |
Bracht leaves color |
7.5GY 4/4 to 3/4 |
7.5GY 4/4 |
7.5GY 4/4 |
|
|
to 3/4 |
to 3/4 |
|
Medium green |
Medium green |
Medium green |
Terminal Leaflet: |
Length (cm) |
9.3 |
9.5 |
7.2 |
Width (cm) |
7.6 |
8.0 |
6.4 |
Length/width ratio |
1.22 |
1.19 |
1.13 |
|
Much longer than |
Much longer |
Longer than |
|
broad |
than broad |
broad |
Serrations/leaf |
20.4 |
20.7 |
19.3 |
Size |
Medium to large |
Large |
Small |
Shape of base |
Acute |
Acute |
Obtuse |
Shape of teeth |
Obtuse |
Obtuse |
Obtuse |
|
TABLE 6 |
|
FRUITING TRUSS CHARACTERISTICS |
|
|
‘PS-592’ |
‘PS-1150’ |
|
|
(U.S. Plant |
(U.S. Plant |
|
|
Pat. No. |
Pat. No. |
Characteristic |
‘PS-5298’ |
9,903) |
10,780) |
|
Length (cm) |
37.4 |
37.3 |
38.1 |
Position relative |
Ranges from |
Ranges from level |
Above the |
to foliage |
level with to |
with to beneath |
foliage |
|
beneath the |
the foliage |
|
foliage |
Pubescence |
Medium |
Medium |
Medium |
Anthocyanin |
Light |
Light |
Moderate |
intensity |
Anthocyanin color |
10RP 4/10 |
10RP 4/10 to 5/10 |
10RP 4/8 to 4/10 |
|
to 5/10 |
Red purple |
Red purple |
|
Red purple |
Attitude at first pick |
Prostrate |
Prostrate |
Prostrate |
|
TABLE 7 |
|
FLOWER CHARACTERISTICS |
|
|
‘PS-592’ |
‘PS-1150’ |
|
|
(U.S. Plant |
(U.S. Plant |
|
|
Pat. No. |
Pat. No. |
Characteristic |
‘PS-5298’ |
9,903) |
10,780) |
|
Petal color |
N9.5/90.0%R |
N9.5/90.0%R to |
N9.5/90.0%R to |
|
to |
N9.25/84.2%R |
N9.25/84.2%R |
|
N9.25/84.2%R |
White |
White |
|
White |
Corolla diameter |
32.3 |
30.6 |
30.5 |
(mm) |
Large |
Medium |
Medium |
Calyx diameter |
39.9 |
38.8 |
34.0 |
(mm) |
Petal length (mm) |
12.4 |
12.1 |
12.5 |
Petal width (mm) |
12.6 |
11.5 |
10.8 |
Petal length/width |
0.98 |
1.05 |
1.15 |
ratio |
Petals/flower |
5.9 |
6.0 |
6.2 |
Sepal length |
16.0 |
15.7 |
13.1 |
(mm) |
Sepal width (mm) |
6.2 |
6.2 |
5.4 |
Sepal |
2.57 |
2.54 |
2.42 |
length/width |
ratio |
Sepals/flower |
11.8 |
11.9 |
12.4 |
Sepals color |
5GY 4/6 |
5GY 4/6 to 5/6 |
5GY 4/6 to 5/6 |
|
to 5/6 |
Medium green |
Medium green |
|
Medium |
|
green |
Size of calyx |
Larger |
Larger |
Larger |
relative to corolla |
Size of inner |
Ranges from |
Ranges from |
Ranges from |
calyx relative |
same size to |
same size to |
same size to |
to outer calyx |
smaller |
smaller |
smaller |
Relative position |
Overlapping |
Overlapping |
Overlapping |
of petals |
|
TABLE 8 |
|
PEST AND DISEASE REACTIONS |
|
|
‘PS-592’ |
‘PS-1150’ |
|
|
(U.S. Plant |
(U.S. Plant |
|
|
Pat. No. |
Pat. No. |
Characteristic |
‘PS-5298’ |
9,903) |
10,780) |
|
Two spotted spider mite |
Moderately |
Moderately |
Moderately |
|
susceptible |
susceptible |
susceptible |
Lygus bug |
Susceptible |
Susceptible |
Susceptible |
Flower thrips |
Moderately |
Moderately |
Moderately |
|
susceptible |
susceptible |
susceptible |
Powdery mildew |
Moderately |
Moderately |
Moderately |
|
susceptible |
susceptible |
susceptible |
Botrytis fruit rot |
Moderately |
Moderately |
Moderately |
|
Susceptible |
susceptible |
susceptible |
Angular leaf spot |
Moderately |
Moderately |
Moderately |
|
susceptible |
susceptible |
susceptible |
Virus complex |
Unknown |
Unknown |
Unknown |
|