Strawberry plant named ‘DrisStrawTwo’

Abstract

This invention relates to a new and distinct cultivar of strawberry plant named ‘DrisStrawTwo’. The new cultivar is primarily characterized by its large fruit size, heavy fruit production, and resistance to powdery mildew.

Description

Genus and species: Fragaria×ananassa.

Variety denomination: ‘DrisStrawTwo’.

BACKGROUND OF THE NEW PLANT

The present invention relates to a new and distinct strawberry cultivar designated ‘DrisStrawTwo’ and botanically known as Fragaria×ananassa. This new strawberry cultivar originated from a controlled cross between ‘Driscoll Camarillo’ (U.S. Plant Pat. No. 14,771) and ‘Driscoll Marin’ (U.S. Plant Pat. No. 15,375). The original seedling of the new cultivar was asexually propagated by stolons at a nursery in Shasta County, Calif. Propagules were transplanted to a controlled breeding plot in Ventura County, Calif. where it was identified and selected for further evaluation in October, 2002. ‘DrisStrawTwo’ was subsequently asexually propagated and underwent further testing at various locations in Monterey County, Calif. 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.

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 both the upperside and underside of several of the flowers.

FIG. 4 shows the whole fruit.

FIG. 5 shows the fruit in longitudinal cross-section.

DESCRIPTION OF THE NEW CULTIVAR

The following description of a 10 month old plant ‘DrisStrawTwo’ is based on observations taken during the 2006 growing season in Monterey County, Calif. 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. ‘DrisStrawTwo’ has not been observed under all possible environmental conditions. Color terminology follows The Royal Horticultural Society Colour Chart, London (R.H.S.) (2001).

DETAILED BOTANICAL DESCRIPTION

Table 1 shows plant characteristics of the new variety compared with plant characteristics of the parents, ‘Driscoll Camarillo’ and ‘Driscoll Marin’. Plant characteristics include plant habit, vigor, leaf shape in cross section, fruit length in centimeters, yield in grams per plant and reaction to powdery mildew.

TABLE 1
			‘Driscoll
Characteristic	‘DrisStrawTwo’	‘Driscoll Camarillo’	Marin’
Habit	Flat globose	Globose	Flat
Vigor	Medium	Medium	Weak
Leaf shape in	Flat	Concave	Slightly
cross section			concave
Powdery	Resistant	Between susceptible &	Moderately
mildew		highly susceptible	susceptible

Table 2 shows leaf characteristics of the new cultivar compared with leaf characteristics of ‘Driscoll Camarillo’ and ‘Driscoll Lanai’ (U.S. Plant Pat. No. 15,145). 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 upperside and underside of leaf, leaf shape in cross section, leaf blistering, leaf glossiness, number of leaflets, shape of leaf margin and shape of leaf base.

TABLE 2
Leaf		‘Driscoll
Characteristic	‘DrisStrawTwo’	Camarillo’	‘Driscoll Lanai’
Terminal leaflet	0.76	0.71	0.76
length (cm)
Terminal leaflet	0.71	0.75	0.74
width (cm)
Terminal leaflet	1.06	0.95	1.02
length/width ratio
No. teeth/terminal	20	23	21
leaflet
Shape of teeth	Obtuse	Rounded	Rounded
Color of	RHS 147A	RHS 147A	RHS 139A
upperside of leaf	Dark yellow green	Dark yellow	Dark green
		green
Color of	RHS 147B	RHS 138B	RHS 138B
underside of leaf	Dark yellow green	Dark green	Dark green
Leaf shape in	Flat	Concave	Between slightly
cross section			concave & flat
Leaf blistering	Strong	Very strong	Medium
Leaf glossiness	Medium	Between	Weak
		medium &
		strong
No. leaflets	Three only	Three only	Three only
Terminal leaflet	Between revolute	Between	Between revolute
margin	& flat	revolute &	& flat
		flat
Terminal leaflet	Rounded	Rounded	Rounded
base shape

Table 3 shows information about the petiole, the petiolule, the bract, and the stipule of the new cultivar compared to ‘Driscoll Camarillo’ and ‘Driscoll Lanai’. This includes petiole length in centimeters, petiole diameter in centimeters, petiolule length in centimeters, petiolule diameter in centimeters, bract frequency per petiole, stipule length in centimeters, stipule width in centimeters, stipule pubescence, petiole pubescence, pose of hairs on the petiole, color of the petiole and color of the petiolule.

TABLE 3
		‘Driscoll	‘Driscoll
Characteristic	‘DrisStrawTwo’	Camarillo’	Lanai’
Petiole length (cm)	18.8	16.8	18.3
Petiole diameter	0.286	0.331	0.260
(cm)
Petiole pubescence	Dense	Sparse	Medium
Petiole pose of hairs	Outwards	Outwards	Downwards
Petiole color	RHS 145A	RHS 149A	RHS 145A
	Medium yellow	Light yellow	Medium yellow
	green	green	green
Petiolule color	RHS 145B	RHS 144B	RHS 145A
	Medium yellow	Medium yellow	Medium yellow
	green	green	green
Petiolule length	1.590	1.376	1.308
(cm)
Petiolule diameter	0.185	0.194	0.148
(cm)
Bract frequency	0	0	0
Stipule length (cm)	3.8	4.0	3.3
Stipule width (cm)	0.794	0.866	0.550
Stipule pubescence	Sparse	Sparse	Between
			medium &
			dense

Table 4 shows stolon characteristics of the new cultivar compared to ‘Driscoll Camarillo’ and ‘Driscoll Lanai’. These characteristics include the number of stolons, the anthocyanin coloration of the stolons, the thickness of the stolons, the pubescence of the stolons, and the average number of daughter plants.

TABLE 4
		‘Driscoll	‘Driscoll
Characteristic	‘DrisStrawTwo’	Camarillo’	Lanai’
Stolon Number	Medium	Medium	Many
Stolon Anthocyanin	Strong	Medium	Strong
Stolon Thickness	Thin	Between	Between
		Medium &	Medium &
		Thick	Thick
Stolon Pubescence	Sparse	Medium	Dense
Average Number of
Daughter Plants (Nursery	17	N/A	67
Average)

Table 5 shows inflorescence characteristics of the new cultivar compared to ‘Driscoll Camarillo’ and ‘Driscoll Lanai’. These characteristics include inflorescence position relative to foliage, relative flower size, flower diameter in centimeters (measured from petal tip to petal tip), relative spacing of petals, petal length in centimeters, petal width in centimeters, petal length to width ratio, 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 length in centimeters (measured from sepal tip to point of attachment to receptacle), sepal width in centimeters, receptacle color and anther color.

TABLE 5
		‘Driscoll	‘Driscoll
Characteristic	‘DrisStrawTwo’	Camarillo’	Lanai’
Inflorescence	Above	Above	Between level
position relative to			with & above
foliage
Flower size	Medium	Medium	Medium
Flower diameter	2.549	2.698	2.518
(cm)
Petal spacing	Overlapping	Overlapping	Overlapping
Petal length (cm)	1.156	1.275	1.103
Petal width (cm)	1.197	1.367	1.146
Petal length/width	0.97	0.93	0.96
ratio
Petal color	RHS 155D	RHS 155B	RHS 155C
	White	White	White
Calyx diameter (cm)	3.260	3.236	3.469
Calyx diameter	Larger	Between	Between same
relative to corolla		smaller &	size & larger
		same size
Inner calyx diameter	Between same	Same size	Larger
relative to outer	size & larger
Sepal length (cm)	1.108	1.118	1.187
Sepal width (cm)	0.608	0.709	0.630
Receptacle color	RHS 2A	RHS 1A	RHS 1B
	Yellow	Green yellow	Green yellow
Anther color	RHS 15B	RHS 17A	RHS 9A
	Yellow orange	Yellow orange	Yellow orange

Table 6 shows fruit characteristics of the new cultivar compared to ‘Driscoll Camarillo’ and ‘Driscoll Lanai’.

TABLE 6
		‘Driscoll	‘Driscoll
Characteristic	‘DrisStrawTwo’	Camarillo’	Lanai’
Fruiting truss length	31.6	27.6	24.0
(cm)
Fruiting truss	Prostrate	Prostrate	Prostrate
attitude
Fruit length (cm)	4.51	3.59	3.63
Fruit width (cm)	3.59	3.29	3.48
Fruit length/width	1.26	1.09	1.04
ratio
Fruit weight (g)	24.7	20.6	24.2
Relative fruit size	Large	Between	Medium
		medium & large
Predominant fruit	Conical	Cordate	Between
shape			conical &
			ovoid
Difference in shape	Moderate	Slight	Slight
between primary &
secondary fruits
Band without	Medium	Absent or very	Between
achenes		narrow	narrow &
			medium
Unevenness of fruit	Absent or very	Weak	Weak
surface	weak
Fruit skin color	RHS 45A	RHS 46A	RHS 45B
	Red	Red	Orange red
Evenness of fruit	Even	Even	Even
color
Fruit glossiness	Strong	Strong	Strong
Insertion of achenes	Between level	Below surface	Level with
	with surface &		surface
	above surface
Achene coloration -	RHS 179A	RHS 184B	RHS 185B
sunward side of	Greyed red	Greyed purple	Greyed
berry			purple
Achene coloration -	RHS 3A	RHS 13B	RHS 154B
shaded side of berry	Yellow	Yellow	Yellow
			green
Achenes per berry	233.7	224	226.8
Insertion of calyx	Set above fruit	In a basin	Level
Pose of calyx	Between	Reflexed	Between
segments	spreading &		spreading &
	reflexed		reflexed
Size of calyx in	Smaller	Smaller	Smaller
relation to fruit
Adherence of calyx	Medium	Strong	Strong
Firmness of flesh	Firm	Firm	Medium
Evenness of flesh	Even	Slightly uneven	Uneven
color
Color of flesh	RHS 44C & RHS	RHS 34B &	RHS 47C
	155B	RHS 155A	Orange red
	Orange red &	Orange red &
	white	white
Hollow center	Absent	Between absent	Medium
		& small
Sweetness	Medium	Medium	Medium
Texture when tasted	Medium	Medium	Fine
Harvest maturity	Mid-season	Between early	Late
		& mid-season
Type of bearing	Fully everbearing	Fully	Partially
		everbearing	everbearing
Grams of fruit/plant	1,654.7	1,485.1	1,420.4

Table 7 shows pest and disease characteristics of the new cultivar compared to ‘Driscoll Camarillo’ and ‘Driscoll Lanai’.

TABLE 7
			‘Driscoll
Pest or Disease	‘DrisStrawTwo’	‘Driscoll Camarillo’	Lanai’
Tetranychus	Susceptible	Moderately	Susceptible
urticae (2-spotted		Susceptible
spider mite)
Lygus hesperus	Susceptible	Susceptible	Susceptible
(Lygus bug)
Botrytis fruit rot	Moderately	Between moderately	Susceptible
	Susceptible	resistant &
		moderately
		susceptible
Powdery mildew	Resistant	Between susceptible	Susceptible
		& highly susceptible
Verticillium wilt	Susceptible	Moderately	Moderately
		Susceptible	resistant
Strawberry mottle	Moderately	Moderately resistant	Moderately
virus	resistant		resistant
Xanthomonas	Moderately	Moderately resistant	Moderately
fragariae	Susceptible		Susceptible

Claims

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