STRAWBERRY PLANT NAMED 'MERIT'

Information

  • Patent Application
  • 20120151646
  • Publication Number
    20120151646
  • Date Filed
    December 10, 2010
    14 years ago
  • Date Published
    June 14, 2012
    12 years ago
  • US Classifications
  • International Classifications
    • A01H5/00
Abstract
This invention relates to a new and distinct variety of strawberry plant named ‘MERIT’. This new strawberry plant named ‘MERIT’ is primarily adapted to the growing conditions of the central coast of California, and is primarily characterized by its small fruit size; orange red to red fruit color; uniformly shaped conical berries; and small sized plant.
Description
LATIN NAME OF THE GENUS AND SPECIES OF THE PLANT CLAIMED


Fragaria ananassa


VARIETY DENOMINATION

‘MERIT’


BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct strawberry variety named ‘MERIT’. This new variety is a result of a controlled cross made in 2001 in an ongoing breeding program between strawberry variety designated ‘PS-2880’ (patented, U.S. Plant Pat. No. 15,597) and strawberry variety designated ‘PS-4630’ (a non-patented selection). Due to the combining of the reciprocal seed lots 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 selected from a controlled breeding plot in Ventura County, California in the fall of 2003. After its selection, the new variety was asexually propagated by stolons in both San Joaquin County, California and Siskiyou County, California. The new variety was extensively tested over the next several years in fruiting fields in Ventura County, California. 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

‘MERIT’ is primarily adapted to the climate and growing conditions of the central coast of California. The nearby Pacific Ocean provides the needed humidity and moderate temperatures to produce a strong vigorous plant and maintain fruit quality during the fall production months.


The following traits have been repeatedly observed and are determined to be unique characteristics of ‘MERIT’, which in combination distinguish this strawberry plant as a new and distinct variety:

    • 1. Small fruit size;
    • 2. Orange-red to red fruit color;
    • 3. Uniformly shaped, conical berries;
    • 4. Small sized plant;
    • 5. Fruiting trusses that are visible above the foliage; and
    • 6. Relatively short fruiting trusses


The strawberry varieties that are believed to be most closely related to the new strawberry variety ‘MERIT’ are the strawberry variety ‘VALOR’ (patented, U.S. Plant Pat. No. 20,394) and the strawberry variety ‘PREMIER’ (patented, U.S. Plant Pat. No. 20,309). In side-by-side comparisons to the similar strawberry varieties ‘VALOR’ and ‘PREMIER’, the new strawberry variety ‘MERIT’ differs by the following combination of characteristics as described in Table 1:












TABLE 1







‘VALOR’
‘PREMIER’


Characteristic
‘MERIT’
(US PP 20,394)
(US PP 20,309)







 1. Color of mature fruit
Ranges from
Ranges from
Ranges from



orange red to red
red to dark red
red to dark red


 2. Fruit size
Small
Medium
Medium


 3. Marketable yield (gm/plt)
503
529
393


 4. Plant size
Ranges from medium
Medium
Medium



to small




 5. Stolon anthocyanin intensity
Weak
Ranges from weak
Ranges from weak




to medium
to medium


 6. Stolon pubescence
Weak
Strong
Medium


 7. Color of upper surface
Medium green
Ranges from medium
Ranges from medium




to dark green
to dark green


 8. Interveinal leaf blistering
Ranges from medium
Medium
Medium



to strong




 9. Foliage gloss
Medium
Medium
Ranges from





medium to strong


10. Serrations/leaf
20.3
22.7
25.9


11. Petiole length (cm)
14.2
17.4
15.5


12. Petiolule length (mm)
11.9
17.8
11.8


13. Terminal leaf shape of base
Acute
Obtuse
Obtuse


14. Fruiting truss length
24.3
29.7
30.8


at maturity (cm)





15. Fruiting truss pubescence
Medium
Ranges from
Strong




medium to strong









For identification a series of molecular markers have been determined for this new variety.


‘MERIT’ differs from its parents, ‘PS-2880’ and ‘PS-4630’ by the following combination of characteristics as described in Table 2.












TABLE 2







‘PS-2880’



Characteristic
‘MERIT’
(US PP 15,597)
‘PS-4630’







1. Fruit size
Small
Medium
Large


3. Plant size
Small
Medium to large
Medium to large


4. Insertion of achenes
Level with
Above the
Level with



surface
surface
surface


5. Type of bearing
Everbearing
Everbearing
June bearing












BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying color photographs illustrate the overall appearance of typical specimens of the new strawberry variety ‘MERIT’, 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 descriptions which accurately describe the color of ‘MERIT’. The depicted plant and plant parts of the new strawberry variety ‘MERIT’ are approximately 3 to 4 months old. The photographs were taken in Ventura County, California:



FIG. 1 shows typical fruiting field characteristics of ‘MERIT’ taken in the month of October 2009;



FIG. 2 shows a close-up view of a typical leaf structure of ‘MERIT’ taken in the month of October 2009;



FIG. 3 shows typical mature and immature field fruit of ‘MERIT’ taken in the month of October 2009;



FIG. 4 shows a close-up view of mature fruit of ‘MERIT’ taken in the month of November 2009;



FIG. 5 shows typical internal and external mature fruit characteristics of ‘MERIT’ taken in the month of November 2009.





DETAILED BOTANICAL DESCRIPTION

The new variety ‘MERIT’ has not been observed under all possible environmental conditions. The characteristics of the new variety ‘MERIT’ may vary in detail, depending upon variations in environmental factors, including weather (temperature, humidity and light intensity), day length, soil type and location. In addition, the characteristics of any parental variety or comparison variety included in Tables 1-9 of the present invention 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 ‘MERIT’, unless otherwise noted, are based on observations taken during the 2009 growing season in Ventura County, California. These measurements and ratings were taken from plants of ‘MERIT’ dug from a low-elevation nursery located in San Joaquin County, California during the month of January 2008 and planted approximately 6 months later in Ventura County, California. The approximate age of the observed plants is 3 to 4 months. Yield observations and fruit quality characteristics are averaged from four years of data collected from the 2006 through 2009 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 Royal Horticultural Society Colour Chart, London (2007).


The following tables 3-9 describe fruit, plant, stolon, foliage, fruiting truss, flower and pest disease characteristics of the new strawberry ‘MERIT’ in comparison to the similar strawberry variety ‘VALOR’ and strawberry variety ‘PREMIER’.









TABLE 3







FRUIT CHARACTERISTICS












'VALOR'
'PREMIER'


Characteristic
'MERIT'
(US PP 20,394)
(US PP 20,309)





Color of mature fruit
RHS 34B
RRHS 46A
RHS 46A



Ranges from orange red
Ranges from red to
Ranges from red to



to red
dark red
dark red


Color of internal flesh
RHS 34C
RHS 45A
RHS 45A



Orange red
Ranges from medium
Ranges from medium




to dark red
to dark red


Fruit length (cm)
3.8
4.0
4.2


Fruit width (cm)
3.3
3.6
3.5


Fruit length/width ratio
1.14
1.12
1.22



Slightly longer
Slightly longer
Slightly longer



than broad
than broad
than broad


Calyx diameter (cm)
3.8
4.1
4.6


Average fruit weight (gm)
18.1
21.5
21.9


Achene color, shaded side
RHS 160B
RHS 160A
RHS 160B



Greyed yellow group
Greyed yellow group
Greyed yellow group


Achene color, sun exposed side
RHS 184B
RHS 183A
RHS 183A



Greyed purple group
Greyed purple group
Greyed purple group


Achenes per berry
324
331
286


Achene weight (mg)
0.50
0.50
0.60


Marketable fruit yield (gm/plt)
503
529
393


Fruit Size
Small
Medium
Medium


Predominant fruit shape
Conical
Conical
Conical


Difference in shapes
Slight
Ranges from slight to
None to very slight


between primary and

moderate



secondary fruit





Band without achenes
Absent or very narrow
Absent or very narrow
Absent or very narrow


Unevenness of fruit surface
Absent or very weak
Weak
Absent or very weak


Evenness of fruit color
Even
Even
Ranges from slightly





uneven to even


Fruit glossiness
Ranges from
Ranges from
Ranges from



medium to strong
medium to strong
medium to strong


Insertion of achenes
Level with surface
Ranges from level with
Level with surface




to below the surface



Insertion of calyx
In the basin
In the basin
In the basin


Attitude of the calyx
Spreading
Spreading
Spreading


Size of calyx in relation
Slightly larger
Slightly larger
Much larger


to fruit diameter





Adherence of calyx
Strong
Strong
Strong


Firmness of fruit skin
Medium
Strong
Medium


Firmness of fruit flesh
Firm
Firm
Medium


Keeping quality
Very good
Very good
Good


Distribution of red color
Marginal and central
Marginal and central
Marginal and central


of the flesh





Hollow center expression
Moderate
Absent or very weak
Weak


Fruit flavor
Ranges from good
Good
Good



to very good




Soluble solids (% brix)
8.8
7.8
8.3


Time of first flowering
Early
Medium
Medium


Time of first harvesting
Early
Medium
Medium


Harvest period
Late September to
Late September to
Late September to



mid December
mid December
mid December


Type of bearing
Everbearing
Everbearing
Everbearing
















TABLE 4







PLANT CHARACTERISTICS












‘VALOR’
‘PREMIER’


Characteristic
‘MERIT’
(US PP 20,394)
(US PP 20,309)













Plant height (cm)
24.1
25.9
25.6


Plant spread (cm)
29.0
31.6
33.5


Plant size
Ranges from medium
Medium
Medium



to small




Plant habit
Globose
Globose
Globose


Plant density
Medium
Medium
Medium


Plant vigor
Medium
Medium
Medium
















TABLE 5







STOLON CHARACTERISTICS












‘VALOR’
‘PREMIER’


Characteristic
‘MERIT’
(US PP 20,394)
(US PP 20,309)





Stolon color
RHS 145A
RHS 144A
RHS 145A



Yellow green group
Yellow green group
Yellow green group


Stolon anthocyanin coloration
RHS 180D
RHS 180A
RHS 181 B



Greyed red group
Greyed red group
Greyed red group


Stolon anthocyanin intensity
Weak
Ranges from weak
Ranges from weak




to medium
to medium


Average stolon number
2.4
6.4
8.5


per plant from the





fruiting field





Stolon diameter at bract (mm)
3.1
3.3
3.6


Stolon pubescence
Weak
Strong
Medium


Attltude of hairs
Upwards
Upwards
Upwards
















TABLE 6







FOLIAGE CHARACTERISTICS












‘VALOR’
‘PREMIER’


Characteristic
‘MERIT’
(US PP 20,394)
(US PP 20,309)





Foliage:





Color of upper surface
RHS 137A
RHS N137B
RHS N137B



Medium green
Medium to dark green
Medium to dark green


Color of underside
RHS 147C
RHS 147C
RHS 147C



Yellow green group
Yellow green group
Yellow green group


Shape in cross section
Slightly concave to flat
Slightly concave to flat
Slightly concave


Interveinal blistering
Ranges from medium
Medium
Medium



to strong




Leaf glossiness
Medium
Medium
Ranges from





medium to strong


Number of leaflets
Three
Three
Three


Terminal Leaflet:





Length (cm)
8.9
8.6
9.6


Width (cm)
7.6
8.7
8.6


Length/width ratio
1.18
0.99
1.11



Longer than broad
As long as broad
Longer than broad


Serrations/leaf
20.3
22.7
25.9


Leaf size
Ranges from
Medium
Medium



medium to small




Shape of base
Acute
Obtuse
Obtuse


Shape of teeth
Obtuse
Obtuse
Obtuse


Petiole:





Petiole Color
RHS 144A
RHS 144A
RHS 144A



Yellow green group
Yellow green group
Yellow green group


Petiole length (cm)
14.2
17.4
15.5


Petiole diameter (mm)
3.4
4.2
4.3


Petiolule color
RHS 144A
RHS 144A
RHS 144A



Yellow green group
Yellow green group
Yellow green group


Petiolule length (mm)
11.9
17.8
11.8


Petiole pubescence
Moderate
Sparce
Sparce


Attitude of hairs
Strongly outward
Slightly outward
Slightly outward


Stipule:





Color
RHS 146A
RHS 146A
RHS 146B



Yellow green group
Yellow green group
Yellow green group


Anthocyanin coloration
RHS 63A
RHS 61A
RHS 61A



Red purple group
Red purple group
Red purple group


Anthocyanin intensity
Weak
Weak
Medium


Length (mm)
22.2
21.3
24.8


Width (mm)
8.6
10.4
11.3
















TABLE 7







FRUITING TRUSS CHARACTERISTICS












‘VALOR’
‘PREMIER’


Characteristic
‘MERIT’
(US PP 20,394)
(US PP 20,309)





Anthocyanin coloration
RHS 181D
RHS 181C
RHS 181B



Greyed red group
Greyed red group
Greyed red group


Anthocyanin intensity
Absent or very weak
Absent or very weak
Medium


Length at maturity (cm)
24.3
29.7
30.8


Position relative to foliage
Above the foliage
Level with the foliage
Ranges from level with





to beneath the foliage


Pubescence
Medium
Ranges from
Strong




medium to strong



Attitude at first pick
Prostrate
Prostrate
Prostrate
















TABLE 8







FLOWER CHARACTERISTICS












‘VALOR’
‘PREMIER’


Characteristic
‘MERIT’
(US PP 20,394)
(US PP 20,309)





Petal color
RHS NN155C
RHS NN155C
RHS NN155C



White
White
White


Sepal color
RHS 137A
RHS 137A
RHS 137A



Green group
Green group
Green group


Corolla diameter (mm)
31.0
30.1
35.3


Calyx diameter (mm)
29.8
31.2
33.9


Petal length (mm)
11.7
11.3
13.4


Petal width (mm)
12.0
11.1
12.7


Petal length/width ratio
0.98
1.02
1.05


Petals/flower
6.2
5.7
5.8


Sepal length (mm)
11.0
10.5
12.3


Sepal width (mm)
3.2
4.7
5.8


Sepal length/width ratio
3.41
2.23
2.11


Sepals/flower
11.8
11.4
11.6


Size of calyx relative to
Ranges from same
Larger
Larger


corolla
size to smaller




Size of inner calyx
Smaller
Smaller
Smaller


relative to outer calyx





Relative position of petals
Overlapping
Ranges from touching to
Overlapping




overlapping
















TABLE 9







PEST AND DISEASE REACTIONS












‘VALOR’
‘PREMIER’


Characteristic
‘MERIT’
(US PP 20,394)
(US PP 20,309)





Two spotted spider mite
Moderately
Moderately
Moderately



susceptible
susceptible
susceptible


Flower thrips
Moderately
Moderately
Moderately



susceptible
susceptible
susceptible


Powdery mildew
Moderately
Susceptible
Susceptible



susceptible




Botrytis fruit rot
Moderately
Moderately
Moderately



susceptible
susceptible
susceptible


Angular leaf spot
Moderately
Moderately
Susceptible



resistant
susceptible








Claims
  • 1. A new and distinct variety of Fragaria ananassa named ‘MERIT’, as herein described and illustrated by the characteristics set forth above.