Raspberry plant named 'PS-1852'

Abstract

This invention relates to a new and distinct variety of raspberry plant named ‘PS-1852’. The new variety is primarily adapted to the growing conditions of the central coast of California and is characterized by the following: large upright primocanes, late fall primocane production, early spring floricane production, large conical berries, with nearly ⅔ of the total production coming from the floricane. Foliage is strongly concave, medium green; possessing very strong rugosity, and always 3-foliate. Primocanes have a weak waxy coat, dense thorns, and weak to medium anthocyanin coloration.

Description

LATIN NAME OF THE GENUS AND SPECIES OF THE PLANT CLAIMED

Rubus idaeus

VARIETY DENOMINATION

‘PS-1852’

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct raspberry variety designated as ‘PS-1852’. This new variety is a result of a controlled cross made by the inventor, Stephen M. Ackerman, in 1995 between raspberry variety ‘PS-1094’ (an unpatented Plant Sciences, Inc. selection) and raspberry variety ‘PS-1316’ (an unpatented Plant Sciences, Inc. selection). The variety is botanically known as Rubus idaeus.

The seedling resulting from the aforementioned cross was asexually propagated by dormant canes in Santa Cruz County, California and was subsequently selected by the inventor from a controlled breeding plot in Watsonville, Calif. in 1997. After its selection, the new variety was further asexually propagated by dormant canes, roots and non-dormant root shoot cuttings in both Santa Cruz County, California and San Joaquin County, California. The new variety was then extensively tested over the next several years in fruiting fields in Santa Cruz 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

‘PS-1852’ is primarily adapted to the climate and growing conditions of the central coast of California. This region provides the necessary year-round temperatures required for it to produce and maintain a strong vigorous plant and to remain in fruit production from August through December on primocanes and in the ensuing year from May through July on the floricanes. The following traits have been repeatedly observed and are determined to be unique characteristics of ‘PS-1852’, which in combination distinguish this raspberry plant as a new and distinct variety:

• • 1. Large plant size;
  • 2. Late fall primocane production;
  • 3. Early spring floricane production; and
  • 4. Large fruit size.

The raspberry varieties that are believed to be most closely related to the new raspberry variety ‘PS-1852’ are the raspberry variety ‘PS-1049’ (patented, U.S. Plant Pat. No. 10,142), and the raspberry variety ‘PS-1703’ (patented, U.S. Plant Pat. No. 15,151).

In comparison to the similar raspberry varieties ‘PS-1049’ and ‘PS-1703’, ‘PS-1852’ differs by the following combination of characteristics described in Table 1:

TABLE 1
		‘PS-1049’
Characteristic	‘PS-1852’	(US PP10,142)
1.	Primocane length (m)	2.2	2.0
2.	Basal diameter (mm)	18.6	16.4
3.	Intemode length	3.8	5.0
	of central ⅓ (cm)
4.	Predominate number of	Always 3	Equal 3-5
	leaflets
5.	Leaf color (upper side)	7.5 GY ¾ to 3/6	7.5 GY ¾ to 4/4
6.	Leaf shape (cross section)	Strongly concave	Slightly concave
7.	Rugosity	Very strong	Medium
8.	Percent of primocane fruiting	27%	40%
9.	Primocane color	10Y 7/4 to 7/6	5 GY 7/4 to 6/4
10.	Floricane color	2.5 YR ¾ to	5 YR 4/4 to 4/6
		7.5 YR 4/6
11.	Bloom intensity	Weak	Strong
12.	Thorn density per cm	7.2	4.0
	of central ⅓
		‘PS-1703’
	Characteristic	(US PP15,151)
	1.	Primocane length (m)	1.8
	2.	Basal diameter (mm)	15.3
	3.	Intemode length	5.8
		of central ⅓ (cm)
	4.	Predominate number of	Mostly 5
		leaflets
	5.	Leaf color (upper side)	7.5 GY 2/4 to ¾
	6.	Leaf shape (cross section)	Slightly concave
			to slightly convex
	7.	Rugosity	Medium to strong
	8.	Percent of primocane fruiting	46%
	9.	Primocane color	7.5 GY 6/2 to 6/4
	10.	Floricane color	5 YR 4/4 to 4/6
	11.	Bloom intensity	Medium to
			strong
	12.	Thorn density per cm	4.5
		of central ⅓

For identification a series of 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 raspberry variety, ‘PS-1852’, at various stages of development as true as reasonably possible with color reproductions of this type. Color in the photographs may differ slightly from the color value cited in the detailed botanical description which accurately describes the color of ‘PS-1852’. The depicted plant and plant parts of the new raspberry variety ‘PS-1852’ were taken in Watsonville, Calif., and are approximately 7 to 10 months old:

FIG. 1 shows typical primocane plant characteristics taken in the month of August;

FIG. 2 shows a close-up of typical primocane foliage characteristics taken in the month of August;

FIG. 3 shows typical primocane field fruiting characteristics taken in the month of August; and

FIG. 4 shows typical primocane fruit characteristics taken in the month of October.

DETAILED BOTANICAL DESCRIPTION

‘PS-1852’ 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 raspberry variety ‘PS-1852’, unless otherwise noted, is based on observations taken during the 2006 growing season in Watsonville, Calif. Primocane measurements and ratings were taken from plants of ‘PS-1852’ dug from a nursery located in San Joaquin County, California, during the middle of December, 2005, and planted approximately 3 to 4 weeks later in Watsonville, Calif. The approximate age of the observed primocane plants is 7 to 8 months. Floricane measurements and ratings were taken from plants of ‘PS-1852’ dug from a nursery located in San Joaquin County, California, during the middle of December, 2004, and planted approximately 3 to 4 weeks later in Watsonville, Calif. The approximate age of the observed floricane plants is 16 to 18 months. Yield observations and fruit quality characteristics are averaged from three years of data collected from the 2004 through 2006 production seasons. Flower measurements and characteristics are from secondary flowers unless otherwise noted. Fruit characteristics and measurements are from secondary fruit unless otherwise noted. Foliage characteristics and measurements are from 3-foliate foliage unless otherwise noted.

Color terminology where noted follows the Munsell Book of Colors, Munsell Color, Baltimore, Md. (1976).

In comparison to the similar raspberry varieties ‘PS-1049’ and ‘PS-1703’, the fruit characteristics of ‘PS-1852’ differ as described in Table 2:

TABLE 2
FRUIT CHARACTERISTICS
		‘PS-1049’
Characteristic	‘PS-1852’	(US PP10,142)
Color mature fruit	5R 3/6 to ⅜	5 R 3/6 to ⅜
	Medium red	Medium red
Color achenes	10 YR 7/4 to 8/4	10 YR 7/4 to 8/4
Fruit Length (cm)	2.3	1.9
Fruit Width (cm)	2.0	1.8
Length/Width Ratio	1.1	1.1
	Slightly longer	Slightly longer
	than broad	than broad
Seed weight (mg)	1.8	1.5
Druplets per berry	113	104
Fruit size	Large	Medium
Predominant shape	Conical	Conical
Evenness of color	Slightly uneven	Even
Glossiness	Medium	Medium
Adherence of receptacle	Weak	Weak
Firmness of flesh	Firm	Very firm
Firmness of skin	Medium	Very firm
		‘PS-1703’
	Characteristic	(US PP15,151)
	Color mature fruit	5 R 3/10 to ⅜
		Medium red
	Color achenes	10 YR 7/4 to 8/4
	Fruit Length (cm)	2.1
	Fruit Width (cm)	1.8
	Length/Width Ratio	1.2
		Slightly longer
		than broad
	Seed weight (mg)	1.6
	Druplets per berry	113
	Fruit size	Medium
	Predominant shape	Conical
	Evenness of color	Even
	Glossiness	Strong
	Adherence of receptacle	Weak
	Firmness of flesh	Firm
	Firmness of skin	Medium

In comparison to the similar raspberry varieties ‘PS-1049’ and ‘PS-1703’, the plant characteristics of ‘PS-1852’ differ as described in Table 3:

TABLE 3
PLANT CHARACTERISTICS
		‘PS-1049’
Characteristic	‘PS-1852’	(US PP10,142)
General:
Habit	Upright	Semi-upright
Size	Large	Medium
Productivity	Medium	High
Self fruitfulness	Yes	Yes
Type of bearing	Everbearing	Everbearing
Primocane:
Color	10 Y 7/4 to 7/6	5 GY 7/4 to 6/4
	Medium yellow-	Light green-yellow
	green
Length (m)	2.2	2.0
Basal diameter (mm)	18.6	16.4
Diameter central ⅓ (mm)	12.3	11.3
Lateral length (cm)	46.3	57.4
No. fruiting laterals	10	14
per cane
% of cane length fruiting	27%	40%
Internode length	3.8	5.0
(of central ⅓ cm)
Anthocyanin coloration	Weak to medium	Weak to medium
Pubescence	Absent	Absent
Length of vegetative bud	Short to Medium	Short to Medium
Strength of waxy coat	Weak	Strong
Time of flowering	Late	Medium
Time of fruiting	Late	Medium
Length of fruiting season	Medium	Long
% of total yield	38%	54%
Flowering period	Early August to	Late June to
	Late November	Late November
Harvest period	Early September to	Late July to
	Late December	Late December
Primocane fruit weight (g)	3.7	2.8
Primocane yield (g/plant)	1,037	1,841
Young Shoots:
Number	Medium	Medium
Anthocyanin coloration	Present	Present
Anthocyanin intensity	Very weak to weak	Very weak to weak
Thorns:
Color	7.5 RP 3/6	7.5 RP 3/6
	Purple	Purple
Length central ⅓ (mm)	2.3	2.2
Presence on cane	Present	Present
Density on cane	Medium to dense	Medium
Texture	Rigid	Rigid
Attitude of the tip	Horizontal	Horizontal
Floricane:
Color	2.5 YR ¾ to	5 YR 4/4 to 4/6
	7.5 YR 4/6	Brown
	Brownish-purple
Length (m)	1.6	1.3
Length vegetative bud (mm)	Short	Long
Strength of waxy coat	Weak	Strong
Fruiting lateral attitude	Erect to semi-	Erect to semi-
	erect	erect
Time bud burst	Medium to late	Medium
Time of flowering	Early	Medium
Time of fruiting	Early	Medium
Length of fruiting season	Medium to long	Medium to long
% of total yield	62%	46%
Flowering period	Early April to	Late April to
	Late June	Late June
Harvest period	Early May to	Late May to
	Late July	Late July
Floricane fruit weight (g)	3.2	2.6
Floricane yield (g/plant)	1,684	1,582
		‘PS-1703’
	Characteristic	(US PP15,151)
	General:
	Habit	Semi-upright
	Size	Medium
	Productivity	High
	Self fruitfulness	Yes
	Type of bearing	Everbearing
	Primocane:
	Color	7.5 GY 6/2 to 6/4
		Medium to light
		green-yellow
	Length (m)	1.8
	Basal diameter (mm)	15.3
	Diameter central ⅓ (mm)	10.9
	Lateral length (cm)	64.6
	No. fruiting laterals	13
	per cane
	% of cane length fruiting	46%
	Internode length	5.8
	(of central ⅓ cm)
	Anthocyanin coloration	Medium to
		strong
	Pubescence	Absent
	Length of vegetative bud	Short to
		medium
	Strength of waxy coat	Medium to
		strong
	Time of flowering	Early
	Time of fruiting	Early
	Length of fruiting season	Long
	% of total yield	52%
	Flowering period	Early June to
		Late November
	Harvest period	Early July to
		Late December
	Primocane fruit weight (g)	3.1
	Primocane yield (g/plant)	1,956
	Young Shoots:
	Number	Medium
	Anthocyanin coloration	Present
	Anthocyanin intensity	Absent to very
		weak
	Thorns:
	Color	7.5 RP 3/6
		Purple
	Length central ⅓ (mm)	1.7
	Presence on cane	Present
	Density on cane	Medium
	Texture	Rigid
	Attitude of the tip	Horizontal
	Floricane:
	Color	5 YR 4/4 to 4/6
		Brown
	Length (m)	1.1
	Length vegetative bud (mm)	Short
	Strength of waxy coat	Medium to
		strong
	Fruiting lateral attitude	Horizontal to
		drooping
	Time bud burst	Medium
	Time of flowering	Medium
	Time of fruiting	Medium
	Length of fruiting season	Medium to
		long
	% of total yield	48%
	Flowering period	Mid April to
		Late June
	Harvest period	Early May to
		Late July
	Floricane fruit weight (g)	2.8
	Floricane yield (g/plant)	1,811

In comparison to the similar raspberry varieties ‘PS-1049’ and ‘PS-1703’, the foliage characteristics of ‘PS-1852’ differ as described in Table 4:

TABLE 4
FOLIAGE CHARACTERISTICS
		‘PS-1049’
	‘PS-1852’	(US PP10,142)
Characteristic	(3 Foliate)	(3 Foliate)
General:
Color of upper surface	7.5 GY ¾ to 3/6	7.5 GY ¾ to 4/4
	Medium green	Medium green
		yellow
Color of lower surface	5 GY 6/2 to 7/2	5 GY 5/4 to 6/4
	Light to Pale	Pale yellow-green
	grey-green
Shape in cross section	Strongly concave	Slightly concave
Arrangement	Compound	Compound
Relief between veins	Very strong	Medium
Glossiness	Weak	Weak
Number of leaflets/leaf	Always 3	Equal 3-5
Terminal Leaflet:
Length (cm)	13.6	15.2
Width (cm)	10.0	10.9
Length/Width Ratio	1.4	1.4
	Longer than broad	Longer than broad
Size	Medium to large	Medium to large
Shape	Cordate	Cordate
Shape of base	Cordate	Cordate
Shape of tip	Acuminate	Acuminate
Margins	Biserrate	Biserrate
Lateral Leaflet:
Length (cm)	11.3	12.4
Width (cm)	7.4	7.6
Rachis length (cm)	3.8	3.9
Orientation	Opposite	Opposite
Arrangement	Compound	Compound
Shape	Ovate	Ovate
Overlapping	Touching	Touching
Shape of the base	Acute rounded	Oblique rounded
Shape of the tip	Acuminate	Acuminate
Margins	Biserrate	Biserrate
Petiole:
Length (cm)	5.1	6.0
Width (mm)	3.4	3.0
Thorn presence	Yes	Yes
Thorn orientation	Erect	Erect
Anthocyanin coloration	Absent to	Absent to
of upper surface	very weak	very weak
Pigmentation of	Light green-	Light green-
lower surface	yellow	yellow
Stipule length (cm)	1.1	1.1
Stipule orientation	Erect	Erect
		‘PS-1703’
		(US PP15,151)
	Characteristic	(5 Foliate)
	General:
	Color of upper surface	7.5 GY 2/4 to ¾
		Medium to Dark
		Green
	Color of lower surface	5 GY 6/2 to 7/2
		Light to Pale
		grey-green
	Shape in cross section	Slightly concave
		to slightly
		convex
	Arrangement	Compound
	Relief between veins	Medium to
		strong
	Glossiness	Medium
	Number of leaflets/leaf	Mostly 5
	Terminal Leaflet:
	Length (cm)	13.5
	Width (cm)	7.0
	Length/Width Ratio	1.9
		Much longer than
		broad
	Size	Medium to small
	Shape	Lobed oblique
	Shape of base	Acute
	Shape of tip	Acuminate
	Margins	Biserrate
	Lateral Leaflet:
	Length (cm)	11.6
	Width (cm)	7.0
	Rachis length (cm)	1.4
	Orientation	Opposite
	Arrangement	Compound
	Shape	Oblique
	Overlapping	Free
	Shape of the base	Acute oblique
	Shape of the tip	Acuminate
	Margins	Biserrate
	Petiole:
	Length (cm)	6.2
	Width (mm)	3.5
	Thorn presence	Yes
	Thorn orientation	Erect
	Anthocyanin coloration	Medium to
	of upper surface	strong
	Pigmentation of	Light green-
	lower surface	yellow
	Stipule length (cm)	1.1
	Stipule orientation	Erect

In comparison to the similar raspberry varieties ‘PS-1049’ and ‘PS-1703’, the flower characteristics of ‘PS-1852’ differ as described in Table 5:

TABLE 5
FLOWER CHARACTERISTICS
		‘PS-1049’
Characteristic	‘PS-1852’	(US PP10,142)
Petal color	N 9.5/90% R to	N 9.5/90% R to
	N 9.25/84.2% R	N 9.25/84.2% R
	White	White
Flower diameter (cm)	2.0	1.7
Size	Medium	Medium
Petal Length (mm)	5.8	5.8
Petal width (mm)	2.8	2.7
Petal length/width ratio	2.1	2.2
	Much longer	Much longer
	than broad	than broad
No. petals/flower	5.0	5.0
No. sepals/flower	5.0	5.0
Pedicel no. spines	Few	Many
Peduncle anthocyanin	Present	Present
presence
Peduncle anthocyanin	Medium	Very weak
intensity
		‘PS-1703’
	Characteristic	(US PP15,151)
	Petal color	N 9.5/90% R to
		N 9.25/84.2% R
		White
	Flower diameter (cm)	1.7
	Size	Medium
	Petal Length (mm)	6.4
	Petal width (mm)	2.7
	Petal length/width ratio	2.4
		Much longer
		than broad
	No. petals/flower	5.0
	No. sepals/flower	5.2
	Pedicel no. spines	Medium
	Peduncle anthocyanin	Present
	presence
	Peduncle anthocyanin	Very weak
	intensity

In comparison to the similar raspberry varieties ‘PS-1049’ and ‘PS-1703’, the pest and disease reactions of ‘PS-1852’ differ as described in Table 6:

TABLE 6
PEST AND DISEASE REACTIONS
		‘PS-1049’	‘PS-1703’
Characteristic	‘PS-1852’	(US PP10,142)	(US PP15,151)
Two spotted spider mite	Susceptible	Susceptible	Susceptible
Grey fruit mold	Susceptible	Susceptible	Susceptible
Powdery mildew	Moderately	Moderately	Moderately
	Susceptible	Susceptible	Susceptible
Yellow rust	Moderately	Moderately	Moderately
	Susceptible	Susceptible	Resistant

Claims

1. A new and distinct raspberry plant known as ‘PS-1852’, as herein described and illustrated by the characteristics set forth above.