Strawberry plant named ‘DrisStrawTwelve’

Abstract

This invention relates to a new and distinct variety of strawberry plant named ‘DrisStrawTwelve.’ The new variety is primarily characterized by having high fruit yield and moderate resistance to Botrytis fruit rot, powdery mildew, Xanthomonas fragariae and high temperatures.

Description

Genus and species: Fragaria×ananassa.

Variety denomination: ‘DrisStrawTwelve’.

BACKGROUND OF THE NEW PLANT

The present invention relates to a new and distinct strawberry cultivar designated ‘DrisStrawTwelve’ and botanically known as Fragaria×ananassa. This new strawberry cultivar was discovered in Hillsborough, Fla. in December 2004 and originated from a cross between ‘Driscoll Sanibel’ (U.S. Plant Pat. No. 16,298) and ‘Driscoll Bonaire’ (U.S. Plant Pat. No. 18,041). The original seedling of the new cultivar was first asexually propagated at a nursery in Shasta County, Calif.

‘DrisStrawTwelve’ was subsequently asexually propagated in Shasta County, Calif. and underwent further testing Hillsborough, Fla. for four years. The present invention has been found to retain its distinctive characteristics through successive asexual propagations.

DESCRIPTION OF THE PHOTOGRAPHS

The accompanying color photographs show typical specimens of the new cultivar at various stages of development as nearly true as it is possible to make in color reproductions. The photographs were taken from 5-month-old plants.

FIG. 1 shows overall plant habit including fruit at various stages of development.

FIG. 2 shows leaves of the plant with three leaflets.

FIG. 3 shows the fruit in longitudinal cross-section.

FIG. 4 shows the whole fruit.

FIG. 5 shows both the upper surface and lower surface of several of the flowers.

DESCRIPTION OF THE NEW CULTIVAR

The following description of ‘DrisStrawTwelve’ is based on observations taken in Hillsborough, Fla. from 2005 to 2008. This description is in accordance with UPOV terminology. Color designations, color descriptions, and other phenotypical descriptions may deviate from the stated values and descriptions depending upon variation in environmental, seasonal, climatic and cultural conditions. ‘DrisStrawTwelve’ has not been observed under all possible environmental conditions. The botanical description of ‘DrisStrawTwelve’ was taken from 5-month-old plants and the botanical descriptions of the comparison varieties, ‘Driscoll Atlantis’ (U.S. Plant Pat. No. 16,475) and ‘Driscoll Sanibel’ (U.S. Plant Pat. No. 16,298), were also taken from 5-month-old plants. Color terminology follows The Royal Horticultural Society Colour Chart, London (R.H.S.) (2001).

DETAILED BOTANICAL DESCRIPTION

Table 1 shows selected plant characteristics of the new variety compared with plant characteristics of ‘Driscoll Atlantis’ and ‘Driscoll Sanibel.’ Plant characteristics include plant habit, terminal leaflet length, time of flowering, and fruit production.

TABLE 1
		‘Driscoll	‘Driscoll
Characteristic	‘DrisStrawTwelve’	Atlantis’	Sanibel’
Plant habit	Flat	Flat globose	Flat
Terminal leaflet	0.67 cm	0.73 cm	0.80 cm
length
Time of	Between early	Between very
flowering	and medium	early and early	Medium
Fruit production,
grams/plant	604	405	420

Table 2 shows plant characteristics of the new variety compared with plant characteristics of the commercial varieties ‘Driscoll Atlantis’ and ‘Driscoll Sanibel.’ Plant characteristics include plant height, diameter, number of crowns per plant, habit, the density of individual plants and the vigor.

TABLE 2
		‘Driscoll	‘Driscoll
Characteristic	‘DrisStrawTwelve’	Atlantis’	Sanibel’
Plant height (cm)	17.5	18.8	16.0
Plant diameter (cm)	42.4	40.2	39.6
Number of	3	3	2
crowns/plant
Habit	Flat	Flat globose	Flat
Density of	Medium	Medium	Medium
individual plant
Vigor	Between medium	Between weak	Between
	and strong	and medium	medium
			and strong

Table 3 shows leaf characteristics of the new cultivar compared with leaf characteristics of ‘Driscoll Atlantis’ and ‘Driscoll Sanibel.’ Leaf characteristics include terminal leaflet length and width in centimeters, length to width ratio, number of teeth per terminal leaflet, shape of teeth, color of upper side and underside of leaf, leaf shape in cross section, leaf blistering, leaf glossiness, number of leaflets, terminal leaflet margin, terminal leaflet length to width ratio, overall leaf shape and shape of leaf apex and base.

TABLE 3
		‘Driscoll	‘Driscoll
Leaf Characteristic	‘DrisStrawTwelve’	Atlantis’	Sanibel’
Terminal leaflet	0.67	0.73	0.80
length (cm)
Terminal leaflet	0.69	0.75	0.81
width (cm)
Terminal leaflet	1.0	1.0	1.0
length/width
ratio
No. teeth/terminal	25	23	20
leaflet
Shape of teeth	Rounded	Rounded	Rounded
Color of upper	RHS 147A (Dark	RHS 147B	RHS 147A
surface of leaf	yellow- green)	(Dark green)	(Dark yellow-
			green)
Color of lower	RHS 148C (Light	RHS 148C	RHS 148C
surface of leaf	yellow-green)	(Light	(Light yellow-
		yellow-green)	green)
Leaf shape in	Slightly convex	Flat	Slightly
cross section			convex
Leaf blistering	Medium	Medium	Medium
Leaf glossiness	Weak	Medium	Medium
No. leaflets	3 only	More than 3	3 only
Terminal leaflet	Revolute	Flat	Revolute
margin profile
Terminal leaflet:	As long as broad	As long	As long as
length/width ratio		as broad	broad
Terminal leaflet	Orbicular	Orbicular	Orbicular
shape
Terminal leaflet	Rounded	Rounded	Rounded
base shape
Terminal leaflet	Rounded	Rounded	Rounded
apex shape

Table 4 shows information about the petiole, the petiolule, the bract, and the stipule of the new cultivar compared to ‘Driscoll Atlantis’ and ‘Driscoll Sanibel.’ This includes petiole length in centimeters, petiole diameter in centimeters, petiole pubescence, pose of hairs on the petiole, color of the petiole, color of the petiolule, petiolule length in centimeters, petiolule diameter in centimeters, bract frequency per petiole, stipule length in centimeters, stipule width in centimeters, stipule pubescence and stipule anthocyanin coloration.

TABLE 4
		‘Driscoll	‘Driscoll
Characteristic	‘DrisStrawTwelve’	Atlantis’	Sanibel’
Petiole length (cm)	10.0	9.9	11.1
Petiole	0.163	0.332	0.320
diameter (cm)
Petiole pubescence	Dense	Medium	Dense
Petiole pose	Upwards and	Outwards	Outwards
of hairs	outwards
Petiole color	RHS 145C (Light	RHS 145A	RHS 145C
	yellow-green)	(Light	(Light
		yellow-	yellow-
		green)	green)
Petiolule color	RHS 145C (Light	RHS 145B	RHS 145C
	yellow-green)	(Light	(Light
		yellow-	yellow-
		green)	green)
Petiolule	1.208	1.023	1.033
length (cm)
Petiolule	0.060	0.178	0.182
diameter (cm)
Bract frequency	1	2	1
Stipule length (cm)	3.0	3.3	3.0
Stipule width (cm)	0.783	1.048	0.968
Stipule pubescence	Medium	Medium	Dense
Stipule	RHS 145D (Light	Between
anthocyanin	yellow-green)	weak and
coloration		medium

Table 5 shows stolon characteristics of the new cultivar compared to ‘Driscoll Atlantis’ and ‘Driscoll Sanibel.’ These characteristics include the number of stolons, average number of daughter plants, the anthocyanin coloration of the stolons, the thickness of the stolons, and the pubescence of the stolons.

TABLE 5
		‘Driscoll	‘Driscoll
Characteristic	‘DrisStrawTwelve’	Atlantis’	Sanibel’
Stolon Number	Medium
Average number	30	53	52
of daughter plants
Stolon	RHS 60B (Dark	RHS 60A (Dark	RHS 53A
Anthocyanin	red-purple)	red-purple)	(Dark red)
Stolon Thickness	Medium	Medium	Medium
Stolon Pubescence	Sparse	Medium	Medium

Table 6 shows inflorescence characteristics of the new cultivar compared to ‘Driscoll Atlantis’ and ‘Driscoll Sanibel.’ These characteristics include inflorescence position relative to foliage, time of flowering, relative flower size, flower diameter in centimeters (measured from petal tip to petal tip), petal shape, relative spacing of petals, petal apex, base and margin, petal length in centimeters, petal width in centimeters, petal length to width ratio, number of petals, petal color, calyx diameter in centimeters (measured on back of flower from sepal tip to sepal tip), diameter of calyx relative to corolla, diameter of inner calyx relative to outer, sepal shape, apex and margin, sepal length in centimeters (measured from sepal tip to point of attachment to receptacle), sepal width in centimeters, number of sepals, receptacle color and anther color.

TABLE 6
		‘Driscoll	‘Driscoll
Characteristic	‘DrisStrawTwelve’	Atlantis’	Sanibel’
Inflorescence	Beneath	Level with	Beneath
position relative
to foliage
Time of flowering	Between early and	Between	Medium
(50% of plants	medium	very early
at first flower)		and early
Flower size	Medium	Medium	Large
Flower diameter	2.457	3.019	3.147
(cm)
Petal shape	Orbicular	Orbicular	Orbicular
Petal spacing	Overlapping	Overlapping	Overlapping
Petal apex shape	Rounded	Rounded	Rounded
Petal margin	Entire	Entire	Entire
Petal base shape	Rounded	Rounded	Rounded
Petal length (cm)	1.135	1.317	1.562
Petal width (cm)	1.136	1.460	1.492
Petal length/width	As long as broad	Broader	As long
ratio		than long	as broad
Typical and	6	6	7
observed petal
number
Petal color	RHS 155B	RHS 155B	RHS 155B
	(White)	(White)	(White)
Calyx diameter	2.902	3.064	4.834
(cm)
Calyx diameter	Smaller to same	Same size	Larger
relative to corolla	size
Inner calyx	Same size	Same size	Same size
diameter relative
to outer
Sepal shape	Elliptical	Elliptical	Elliptical
Sepal apex shape	Truncate	Truncate	Truncate
Sepal margin	Entire	Entire	Entire
Sepal length (cm)	1.001	1.131	1.661
Sepal width (cm)	0.514	0.546	0.785
Typical and	12	12	14
observed sepal
number
Receptacle color	RHS 154B (Light	RHS 2A	RHS 150A
	yellow-green)	(Medium	(Light yellow-
		yellow)	green)
Anther color	RHS 15A	RHS 17B	RHS 15A
	(Medium	(Dark yellow-	(Medium
	yellow-orange)	orange)	yellow-orange)

Table 7 shows fruit characteristics of the new cultivar compared to ‘Driscoll Atlantis’ and ‘Driscoll Sanibel.’ These characteristics include fruiting truss length in centimeters, fruiting truss diameter, number of berries per truss, fruiting truss attitude, fruiting truss color, fruit length in centimeters, fruit truss width in centimeters, fruit length to width ratio, fruit hollow length and width in centimeters, fruit hollow length to width ratio, fruit weight in grams, relative fruit size, predominant fruit shape, difference in shape between primary and secondary fruits, band without achenes, unevenness of fruit surface, fruit skin color, evenness of fruit color, fruit glossiness, insertion of achenes, achene coloration (sunward and shaded sides of berry) and the number of achenes per berry.

TABLE 7
		‘Driscoll	‘Driscoll
Characteristic	‘DrisStrawTwelve’	Atlantis’	Sanibel’
Fruiting truss length	16.6	21.8	14.2
(cm)
Fruiting truss length-	Medium	Long	Medium
general
Fruiting truss	0.267	0.282	0.285
diameter (cm) at
base of truss
Number of berries	1	2	1
per fruiting truss
Fruiting truss attitude	Prostrate	Semi-erect	Prostrate
Fruiting truss color	RHS 144B	RHS 144B	RHS 144B
at base of truss	(Medium	(Medium	(Medium
	yellow-green)	yellow-green)	yellow-
			green)
Fruit length (cm)	5.904	4.836	4.667
Fruit width (cm)	4.490	3.895	4.261
Fruit length/width	1.3	1.2	1.1
ratio
Fruit hollow length	2.359	1.689	0.672
(cm)
Fruit hollow width	0.823	0.708	0.269
(cm)
Fruit hollow	2.9	2.4	2.5
length/width ratio
Fruit weight (g)	37.9	27.3	39.0
Relative fruit size	Large	Medium	Medium
Predominant fruit	Conical to	Conical	Conical
shape	bi-conical
Difference in shape	None or very	Moderate	Marked
between primary &	slight
secondary fruits
Band without	Medium	Medium	Narrow
achenes
Unevenness of fruit	Medium	Medium	Strong
surface
Fruit skin color	RHS 185A	RHS 45A	RHS 46A
	(Dark purple-red)	(Medium red)	(Dark red)
Evenness of fruit	Slightly uneven	Even	Even
color
Fruit glossiness	Medium	Medium	Between
			medium
			and strong
Insertion of achenes	Below surface	Below surface	Above
			surface
Achene coloration-	RHS 184B	RHS 181C	RHS 184B
sunward side of berry	(Medium	(Medium	(Medium
	greyed-purple)	greyed-red)	greyed-
			purple)
Achene coloration-	RHS 151C (Light	RHS 151B	RHS 151C
shaded side of berry	yellow-green)	(Light yellow-	(Light
		green)	yellow-
			green)
Achenes per berry	104	114	228

Table 8 shows fruit characteristics of the new cultivar compared to ‘Driscoll Atlantis’ and ‘Driscoll Sanibel.’ These characteristics include the harvest maturity, insertion of calyx, pose of calyx segments, size of calyx in relation to fruit, adherence of calyx, firmness of flesh, color of the fruit flesh, evenness of the flesh color, distribution of flesh color, hollow center, sweetness of fruit, acidity of fruit, texture of fruit when tasted, type of bearing, grams of fruit per plant.

TABLE 8
		‘Driscoll	‘Driscoll
Characteristic	‘DrisStrawTwelve’	Atlantis’	Sanibel’
Harvest maturity	Mid-December to	Early	Mid-
	early April	December	December to
		to March	early April
Insertion of calyx	Set above fruit	Level	Level
Pose of calyx	Spreading to	Reflexed	Reflexed
segments	reflexed
Size of calyx in	From same size to	Same size	From same
relation to fruit	larger		size to larger
Adherence of calyx	Strong	Strong	Strong
Firmness of flesh	Firm	Firm	Medium
Color of the flesh	RHS 155B (White)	RHS 155D	RHS 155B
	and RHS 42B	(White) and	(White) and
	(Medium Red)	RHS 40A	RHS 42A
		(Medium red)	(Medium red)
Evenness of flesh	Even	Even	Even
color
Distribution of	Marginal and	Marginal and	Marginal and
flesh color	central	central	central
Hollow center	Small	Small	Absent to small
Sweetness	Medium	Medium	Between
			medium and
			strong
Acidity	Weak	Weak	Medium
Texture when tasted	Fine	Medium	Medium
Type of bearing	Partially	Partially	Not
	everbearing	everbearing	everbearing
Grams of fruit/plant	604	405	420

Table 9 shows pest, stress and disease characteristics of the new cultivar compared to ‘Driscoll Atlantis’ and ‘Driscoll Sanibel’.

TABLE 9
Pest, Stress		‘Driscoll	‘Driscoll
or Disease	‘DrisStrawTwelve’	Atlantis’	Sanibel’
Botrytis fruit rot	Moderately resistant	Susceptible	Susceptible
Powdery mildew	Moderately resistant	Susceptible	Susceptible
Xanthomonas	Moderately resistant	Between resistant	Between
fragariae		and moderately	resistant and
		resistant	moderately
			resistant
High temperatures	Moderately resistant	Moderately	Resistant
		resistant

COMPARISON WITH PARENTAL AND COMMERCIAL CULTIVARS

When ‘DrisStrawTwelve’ is compared to the female parent ‘Driscoll Sanibel’ (U.S. Plant Pat. No. 16,298), ‘DrisStrawTwelve’ has greater fruit production, larger fruit and fewer daughter plants than does ‘Driscoll Sanibel.’ In addition, ‘DrisStrawTwelve’ has moderate resistance to Botrytis fruit rot and powdery mildew while ‘Driscoll Sanibel’ is susceptible to both diseases.

When ‘DrisStrawTwelve’ is compared to the male parent ‘Driscoll Bonaire’ (U.S. Plant Pat. No. 18,041), ‘DrisStrawTwelve’ is a taller plant with dark yellow-green leaves than ‘Driscoll Bonaire’ which has medium green leaves. In addition, ‘DrisStrawTwelve’ produces more fruit than ‘Driscoll Bonaire’ although ‘DrisStrawTwelve’ has fewer daughter plants. ‘DrisStrawTwelve’ is also moderately resistant to Botrytis fruit rot while ‘Driscoll Bonaire’ is susceptible; ‘DrisStrawTwelve’ is moderately resistant to powdery mildew and Xanthomonas fargariae while ‘Driscoll Bonaire’ is moderately susceptible to both diseases.

Claims

1. A new and distinct variety of strawberry plant as described and shown herein.