USPP8662P - Strawberry plant called `Cuesta` - Google Patents

Strawberry plant called `Cuesta` Download PDF

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USPP8662P
USPP8662P US08/041,748 US4174893V US8662P US PP8662 P USPP8662 P US PP8662P US 4174893 V US4174893 V US 4174893V US 8662 P US8662 P US 8662P
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cuesta
chandler
fruit
color
similar
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Royce S. Bringhurst
Douglas V. Shaw
Victor Voth
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University of California
University of California San Diego UCSD
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01HNEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
    • A01H6/00Angiosperms, i.e. flowering plants, characterised by their botanic taxonomy
    • A01H6/74Rosaceae, e.g. strawberry, apple, almonds, pear, rose, blackberries or raspberries
    • A01H6/7409Fragaria, i.e. strawberries
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01HNEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
    • A01H5/00Angiosperms, i.e. flowering plants, characterised by their plant parts; Angiosperms characterised otherwise than by their botanic taxonomy
    • A01H5/08Fruits

Definitions

  • This invention relates to a new and distinctive short-day type cultivar designated as ⁇ Cuesta ⁇ , which resulted from a cross performed in 1987 between the cultivar ⁇ Seascape ⁇ (U.S. Plant Pat. No. 7,614) and advanced selection Cal 83.25-2 (a hybrid between ⁇ Fern ⁇ ; U.S. Plant Pat. No. 5,263 and ⁇ Parker ⁇ ; U.S. Plant Pat. No. 5,267).
  • ⁇ Cuesta ⁇ was first fruited at the University of California Wolfskill Experimental orchards near Davis, Calif. in 1988, where it was selected, originally designated Cal 87.109-3, and propagated asexually by runners. Asexual propagules from this original source have been tested at the Watsonville Strawberry Research Facility, University field stations, and to a limited extent in grower fields starting in 1989.
  • FIG. 1 shows the general flowering and fruiting characteristics of the plant
  • FIG. 2 shows a typical mature leaf during late spring
  • FIG. 3 shows representative midseason fruit.
  • ⁇ Cuesta ⁇ is typical of short-day types and produces fruit over an extended period when treated appropriately in cool Mediterranean climates.
  • ⁇ Cuesta ⁇ differs from ⁇ Seascape ⁇ primarily in that ⁇ Seascape ⁇ is a day-neutral genotype whereas ⁇ Cuesta ⁇ is a short-day type.
  • the production patterns of the two are quite different.
  • the production pattern for ⁇ Cuesta ⁇ is similar to that for ⁇ Chandler ⁇ (U.S. Plant Pat. No. 5,262), although it produces larger and greater quantities of late-season fruit.
  • ⁇ Cuesta ⁇ will be of special interest for winter plantings, where ⁇ Chandler ⁇ has been successful, and in summer plantings where ⁇ Pajaro ⁇ (U.S. Plant Pat. No. 4,538) has been successful.
  • Plants and foliage Fruiting plants of ⁇ Cuesta ⁇ are more erect and open than plants of ⁇ Chandler ⁇ and generally smaller than either ⁇ Chandler ⁇ or ⁇ Oso Grande ⁇ (U.S. Plant Pat. No. 6,578). ⁇ Cuesta ⁇ forms branch crowns in similar quantity to ⁇ Chandler ⁇ with slightly less branching than ⁇ Oso Grande ⁇ . When propagated in the nursery, ⁇ Cuesta ⁇ has similar runner production capacity to ⁇ Chandler ⁇ . Comparative statistics for foliar characters, including leaf color, near mid-season are given for the three cultivars in Table 1, with visual comparisons of leaf color to the Munsell color scale (Nickerson Color Fan) given in Table 5.
  • Leaf color is distinctly lighter on the underside for ⁇ Cuesta ⁇ ; the differential is similar to ⁇ Chandler ⁇ but not as large as for ⁇ Oso Grande ⁇ .
  • Leaflets of ⁇ Cuesta ⁇ are similar in size to the comparison cultivars, but are somewhat longer and more narrow than for ⁇ Chandler ⁇ , and are substantially less rounded than for ⁇ Oso Grande ⁇ .
  • Leaves (including petioles) are usually shorter than those of ⁇ Chandler ⁇ . Petioles are similar in thickness to ⁇ Chandler ⁇ and not as thick or stiff as for ⁇ Oso Grande ⁇ .
  • Paired stipules borne in a median position on the petiole, appear as small, stalked, ovate to heart-shaped structures on most leaves for ⁇ Cuesta ⁇ and the comparison cultivars. Stipule size varies greatly both within and among individual plants for ⁇ Cuesta ⁇ , and one or both stipules may be absent or may abscise as the leaf matures.
  • Leaf and petiole pubescence characters for ⁇ Cuesta ⁇ are similar to those for ⁇ Chandler ⁇ , except that tomentum are less dense. Also, leaves for ⁇ Cuesta ⁇ are similar in reflectance to those of ⁇ Chandler ⁇ but less yellow; leaves for ⁇ Cuesta ⁇ are similar in color intensity to ⁇ Oso Grande ⁇ but less glossy.
  • ⁇ Cuesta ⁇ has concave leaves, similar to or more concave than ⁇ Chandler ⁇ , and much more concave than leaves of ⁇ Oso Grande ⁇ .
  • Isozymes in leaf extracts ⁇ Cuesta ⁇ has been classified for three isozyme systems using starch gel electrophoresis (Table 2): Phosophoglucoisomerase (PGI), Leucine Aminopeptidase (LAP), and Phosphoglucomutase (PGM). It is distinguishable from all other short-day cultivars released to date except ⁇ Parker ⁇ . For electrophoretic procedures see: J. Amer. Soc. Hort. Sci. 106:684-687.
  • ⁇ Cuesta ⁇ is moderately susceptible to common leaf spot (Ramularia tulasnei) and powdery mildew (Sphaerotheca macularis). When treated properly, it has tolerance to two-spotted spidermites (Tetranychus urticae) that is comparable with that of ⁇ Chandler ⁇ .
  • ⁇ Cuesta ⁇ is tolerant to strawberry viruses encountered in California.
  • ⁇ Cuesta ⁇ is similar to ⁇ Chandler ⁇ in its production pattern, and produces more early fruit at Watsonville than ⁇ Oso Grande ⁇ (with conventional winter planting). Comparative statistics for flower and fruit characters, including fruit color, near mid-season are given for the three cultivars in Table 3.
  • the primary flowers for ⁇ Cuesta ⁇ are similar in size to ⁇ Chandler ⁇ and ⁇ Oso Grande ⁇ , whereas the sepals are somewhat larger than for the comparison cultivars; each primary flower has 5-6 petals.
  • the calyx for ⁇ Cuesta ⁇ is usually even with the shoulder of the fruit; early-season fruit can have a slight neck.
  • the fruit shape for ⁇ Cuesta ⁇ is a long conic, and is easily distinguished from ⁇ Chandler ⁇ (flat conic) and ⁇ Oso Grande ⁇ (rounded or block conic).
  • External fruit color for ⁇ Cuesta ⁇ is slightly darker and less glossy than for ⁇ Chandler ⁇ and ⁇ Oso Grande ⁇ ; internal color is darker than ⁇ Chandler ⁇ and substantially darker than for ⁇ Oso Grande ⁇ .
  • Achenes vary from light red to dark red, and are even with the fruit surface or slightly indented.
  • ⁇ Cuesta ⁇ has been tested under a variety of cultural regimes, and optimal performance is obtained when nursery treatments, pre-plant chilling regimes, plant densities, and nutritional programs similar to those that optimize performance for ⁇ Chandler ⁇ are used. In general, ⁇ Cuesta ⁇ is less sensitive to over-chilling than ⁇ Chandler ⁇ .
  • ⁇ Cuesta ⁇ When treated with appropriate planting regimes, ⁇ Cuesta ⁇ has larger fruit and produces greater yields than ⁇ Chandler ⁇ (Table 4); ⁇ Cuesta ⁇ has greater yield and produces fruit similar in size to fruit from ⁇ Oso Grande ⁇ . Commercial appearance ratings have been equal to or better than those for ⁇ Chandler ⁇ . Fruit firmness is similar to that for ⁇ Chandler ⁇ but ⁇ Cuesta ⁇ is not as firm as ⁇ Oso Grande ⁇ . Subjectively, ⁇ Cuesta ⁇ has very good flavor, somewhat less aromatic than ⁇ Chandler ⁇ , less sweet but better balanced than for ⁇ Oso Grande ⁇ . The fruit will be acceptable for fresh market, will be exceptional for processing, due to its internal color and will be useful for home garden purposes.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physiology (AREA)
  • Botany (AREA)
  • Developmental Biology & Embryology (AREA)
  • Environmental Sciences (AREA)
  • Natural Medicines & Medicinal Plants (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)

Abstract

'Cuesta' is a short-day (June-bearing) cultivar similar to 'Chandler' (U.S. Plant Pat. No. 5,262) but with similar or better productivity, larger and more consistent fruit size, and is a more open and less vigorous plant.

Description

DESCRIPTION
This invention relates to a new and distinctive short-day type cultivar designated as `Cuesta`, which resulted from a cross performed in 1987 between the cultivar `Seascape` (U.S. Plant Pat. No. 7,614) and advanced selection Cal 83.25-2 (a hybrid between `Fern`; U.S. Plant Pat. No. 5,263 and `Parker`; U.S. Plant Pat. No. 5,267).
`Cuesta` was first fruited at the University of California Wolfskill Experimental orchards near Davis, Calif. in 1988, where it was selected, originally designated Cal 87.109-3, and propagated asexually by runners. Asexual propagules from this original source have been tested at the Watsonville Strawberry Research Facility, University field stations, and to a limited extent in grower fields starting in 1989.
FIG. 1 shows the general flowering and fruiting characteristics of the plant;
FIG. 2 shows a typical mature leaf during late spring; and
FIG. 3 shows representative midseason fruit.
`Cuesta` is typical of short-day types and produces fruit over an extended period when treated appropriately in cool Mediterranean climates. `Cuesta` differs from `Seascape` primarily in that `Seascape` is a day-neutral genotype whereas `Cuesta` is a short-day type. Also the production patterns of the two are quite different. The production pattern for `Cuesta` is similar to that for `Chandler` (U.S. Plant Pat. No. 5,262), although it produces larger and greater quantities of late-season fruit. `Cuesta` will be of special interest for winter plantings, where `Chandler` has been successful, and in summer plantings where `Pajaro` (U.S. Plant Pat. No. 4,538) has been successful.
Plants and foliage: Fruiting plants of `Cuesta` are more erect and open than plants of `Chandler` and generally smaller than either `Chandler` or `Oso Grande` (U.S. Plant Pat. No. 6,578). `Cuesta` forms branch crowns in similar quantity to `Chandler` with slightly less branching than `Oso Grande`. When propagated in the nursery, `Cuesta` has similar runner production capacity to `Chandler`. Comparative statistics for foliar characters, including leaf color, near mid-season are given for the three cultivars in Table 1, with visual comparisons of leaf color to the Munsell color scale (Nickerson Color Fan) given in Table 5. Leaf color is distinctly lighter on the underside for `Cuesta`; the differential is similar to `Chandler` but not as large as for `Oso Grande`. Leaflets of `Cuesta` are similar in size to the comparison cultivars, but are somewhat longer and more narrow than for `Chandler`, and are substantially less rounded than for `Oso Grande`. Leaves (including petioles) are usually shorter than those of `Chandler`. Petioles are similar in thickness to `Chandler` and not as thick or stiff as for `Oso Grande`. Paired stipules, borne in a median position on the petiole, appear as small, stalked, ovate to heart-shaped structures on most leaves for `Cuesta` and the comparison cultivars. Stipule size varies greatly both within and among individual plants for `Cuesta`, and one or both stipules may be absent or may abscise as the leaf matures. Leaf and petiole pubescence characters for `Cuesta` are similar to those for `Chandler`, except that tomentum are less dense. Also, leaves for `Cuesta` are similar in reflectance to those of `Chandler` but less yellow; leaves for `Cuesta` are similar in color intensity to `Oso Grande` but less glossy. Visual comparisons of fruit color according to the Munsell color scale (Nickerson Color Fan) are given in Table 5. `Cuesta` has concave leaves, similar to or more concave than `Chandler`, and much more concave than leaves of `Oso Grande`.
Isozymes in leaf extracts: `Cuesta` has been classified for three isozyme systems using starch gel electrophoresis (Table 2): Phosophoglucoisomerase (PGI), Leucine Aminopeptidase (LAP), and Phosphoglucomutase (PGM). It is distinguishable from all other short-day cultivars released to date except `Parker`. For electrophoretic procedures see: J. Amer. Soc. Hort. Sci. 106:684-687.
Disease and pest reaction: `Cuesta` is moderately susceptible to common leaf spot (Ramularia tulasnei) and powdery mildew (Sphaerotheca macularis). When treated properly, it has tolerance to two-spotted spidermites (Tetranychus urticae) that is comparable with that of `Chandler`. `Cuesta` is tolerant to strawberry viruses encountered in California.
              TABLE 1                                                     
______________________________________                                    
Foliar characteristics for `Cuesta`, `Chandler`, and `Oso Grande`.        
          Cultivar                                                        
Foliar Character                                                          
            `Cuesta`   `Chandler` `Oso Grande`                            
______________________________________                                    
Mid-tier leaflet                                                          
Length (mm)                                                               
mean        84.0       82.4       77.2                                    
range       74-96      78-94      75-80                                   
Width (mm)                                                                
mean        66.8       71.4       67.6                                    
range       52-77      63-88      62-71                                   
Mid-tier leaf                                                             
Length (mm)                                                               
mean        218.0      244.2      191.6                                   
range       205-228    218-262    170-200                                 
Width (mm)                                                                
mean        137.4      148.0      137.2                                   
range       117-154    132-158    130-149                                 
Leaf color                                                                
(CIELAB)*                                                                 
L*                                                                        
mean        31.2       31.4       31.9                                    
range       28.6-34.2  27.1-33.3  29.9-33.0                               
a*                                                                        
mean        -5.5       -8.0       -5.3                                    
range       -3.8--6.8  -5.2--8.2  -4.2--8.3                               
b*                                                                        
mean        14.4       16.0       15.5                                    
range       12.4-16.7  12.9-21.4  12.5-20.6                               
# leaflets/leaf                                                           
            3          3          3                                       
Leaf convexity                                                            
            concave    concave    concave                                 
Serrations                                                                
number      many       many       moderate                                
shape       semi-pointed                                                  
                       semi-pointed                                       
                                  semi-round                              
Leaf pubescence                                                           
            sparse     moderate/  moderate/                               
                       sparse     heavy                                   
Petiole pubescence                                                        
density     sparse     heavy      heavy                                   
direction   perpendicular                                                 
                       acropetal  perpendicular                           
______________________________________                                    
 *CIELAB is the abbreviation of the international color system known as   
 "Commission Internationale De L'Eclairage" 1978. Recommendations on      
 uniform color spaces -- color difference equations, psychometric color   
 terms, Supplement No. 2 to CIE Publication No. 15. PARIS.                
              TABLE 2                                                     
______________________________________                                    
Isozyme phenotypes for `Cuesta`, `Chandler`, and `Oso Grande`.            
Cultivar                                                                  
Locus   `Cuesta`     `Chandler`                                           
                               `Oso Grande`                               
______________________________________                                    
PGI     A4           A1        A2                                         
LAP     B3           B3        B3                                         
PGM     C2           C1        C2                                         
______________________________________                                    
Flowering, fruiting, fruit, and production characteristics: `Cuesta` is similar to `Chandler` in its production pattern, and produces more early fruit at Watsonville than `Oso Grande` (with conventional winter planting). Comparative statistics for flower and fruit characters, including fruit color, near mid-season are given for the three cultivars in Table 3. The primary flowers for `Cuesta` are similar in size to `Chandler` and `Oso Grande`, whereas the sepals are somewhat larger than for the comparison cultivars; each primary flower has 5-6 petals. The calyx for `Cuesta` is usually even with the shoulder of the fruit; early-season fruit can have a slight neck. The fruit shape for `Cuesta` is a long conic, and is easily distinguished from `Chandler` (flat conic) and `Oso Grande` (rounded or block conic). External fruit color for `Cuesta` is slightly darker and less glossy than for `Chandler` and `Oso Grande`; internal color is darker than `Chandler` and substantially darker than for `Oso Grande`. Achenes vary from light red to dark red, and are even with the fruit surface or slightly indented.
`Cuesta` has been tested under a variety of cultural regimes, and optimal performance is obtained when nursery treatments, pre-plant chilling regimes, plant densities, and nutritional programs similar to those that optimize performance for `Chandler` are used. In general, `Cuesta` is less sensitive to over-chilling than `Chandler`.
When treated with appropriate planting regimes, `Cuesta` has larger fruit and produces greater yields than `Chandler` (Table 4); `Cuesta` has greater yield and produces fruit similar in size to fruit from `Oso Grande`. Commercial appearance ratings have been equal to or better than those for `Chandler`. Fruit firmness is similar to that for `Chandler` but `Cuesta` is not as firm as `Oso Grande`. Subjectively, `Cuesta` has very good flavor, somewhat less aromatic than `Chandler`, less sweet but better balanced than for `Oso Grande`. The fruit will be acceptable for fresh market, will be exceptional for processing, due to its internal color and will be useful for home garden purposes.
              TABLE 3                                                     
______________________________________                                    
Flower and fruit characters for                                           
`Cuesta`, `Chandler`, and `Oso Grande`.                                   
            Cultivar                                                      
Character     `Cuesta`  `Chandler`                                        
                                  `Oso Grande`                            
______________________________________                                    
# petals                                                                  
mean           6.5       6.6       5.0                                    
range         5-6       6-8       5-5                                     
Flower position                                                           
              even/     even/     exposed                                 
(relative to foliage)                                                     
              slightly  exposed                                           
              interior                                                    
Calyx diam. (mm)                                                          
mean          60.0      47.7      34.1                                    
range         50-68     45-53     27-38                                   
Corolla diam. (mm)                                                        
mean          41.0      39.3      32.2                                    
range         38-46     36-46     27-41                                   
Fruit shape                                                               
length/width   1.32      1.33      1.06                                   
ratio                                                                     
subjective    conic     flat conic                                        
                                  blocky/conic                            
Calyx position                                                            
              even      even/slight                                       
                                  even/slight                             
                        neck      indent                                  
Seed position even/slight                                                 
                        even/slight                                       
                                  even                                    
              indent    indent                                            
Fruit color (CIELAB)                                                      
external                                                                  
L*            21.7      23.6      22.4                                    
a*            26.3      38.5      31.2                                    
b*            14.7      14.8      17.2                                    
internal                                                                  
L*            39.9      46.2      54.1                                    
a*            41.2      39.1      30.4                                    
b*            33.2      29.4      22.7                                    
______________________________________                                    
              TABLE 4                                                     
______________________________________                                    
Performance for selection `Cuesta` compared with `Oso Grande`             
and `Chandler` at the Watsonville Research Facility for the               
1991 trial. All plants were dug from a nursery near MacDoel,              
CA on October 5, 1990.                                                    
                               Appear-                                    
       Weeks Yield    Size     ance                                       
       storage                                                            
             (g/plant)                                                    
                      (g/fruit)                                           
                               Score  Firmness                            
______________________________________                                    
`Cuesta` 1       1,906    24.4   4.0    7.2                               
         3       2,274    27.8   4.2    7.4                               
`Chandler`                                                                
         1       1,647    23.2   3.8    6.8                               
         3       2,078    25.8   4.0    7.1                               
`Oso Grande`                                                              
         1       1,237    25.7   3.7    8.0                               
         3       1,740    27.1   3.8    8.3                               
______________________________________                                    
              TABLE 5                                                     
______________________________________                                    
Munsell color classification for leaf and fruit characters.               
Munsell                  Munsell                                          
Leaf Color Classes       Fruit Color Classes                              
       Upper      Lower                                                   
Item   (Adaxial)  (Abaxial)  External                                     
                                     Internal                             
______________________________________                                    
Chandler                                                                  
       5GY 4/3    5GY 5/6    5R 5/13 7R 5/13                              
       5GY 5/6               5R 4/12                                      
Oso    5GY 4/3    5GY 5/6    5R 5/13 7.5R 7/9                             
       5GY 3/2    7.5GY 6/8  7.5R 5/13                                    
                                     7.5R 6/12                            
Cuesta 7.5GY 6/8  10GY 7/8   5R 4/12 7.5R 5/13                            
                             5R 3/7  7.5R 4/11                            
______________________________________                                    

Claims (1)

We claim:
1. The new and distinct variety of strawberry plant illustrated and described and having the characteristics above enumerated.
US08/041,748 1993-04-01 1993-04-01 Strawberry plant called `Cuesta` Expired - Lifetime USPP8662P (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USPP25223P2 (en) 2013-01-22 2015-01-13 The United States Of America, As Represented By The Secretary Of Agriculture Strawberry plant named ‘Sweet Sunrise’
USPP25300P2 (en) 2013-01-22 2015-02-24 The United States Of America, As Represented By The Secretary Of Agriculture Strawberry plant named ‘Charm’

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USPP25223P2 (en) 2013-01-22 2015-01-13 The United States Of America, As Represented By The Secretary Of Agriculture Strawberry plant named ‘Sweet Sunrise’
USPP25300P2 (en) 2013-01-22 2015-02-24 The United States Of America, As Represented By The Secretary Of Agriculture Strawberry plant named ‘Charm’

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