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‘El Dorado’ and ‘La Estrella’: New Tropical Pumpkins
(Cucurbita moschata Duchesne)
Donald N. Maynard
Gulf Coast Research and Education Center
University of Florida
Wimauma
ADDITIONAL PROJECT LEADERS
Gary Elmstrom R. Bruce Carle Linda WesselBeaver Stephen T. Talcott
FUNDING
USDA Tropical and Subtropical Agricultural Research Grant Caribbean Basin Agricultural Grant
Tropical Pumpkin Variety Improvement
P.R. AES Linea C Pinta P.R. AES Soler Fla. AES La Segunda
1979 Fla. AES La Primera 1950 P.R. AES Fortuna 1940’s P.R. AES Camaguey 1940’s P.R. AES Borinquen Date Developer Variety
5. GLOBE, FLAT OR ROUND REGULAR SHAPE
4. SMOOTH FRUIT SURFACE
3. MEDIUM SIZE (3.6 TO 6.8 KG)
2. PIEBALD OR DARK PIEBALD RIND COLOR
1. ORANGE – YELLOW TO DARK – ORANGE FRUIT WALL
Desirable Tropical Pumpkin Fruit Characteristics Puerto Rico Survey
OBJECTIVES OF TROPICAL PUMPKIN IMPROVEMENT
*F1 Hybrids *Compact Plant Habit
*Concentrated, Early Maturity
*High Yields
*Thick, Deep Orange Flesh
*Readily Available Seed Supply
51.8 16.9 G395 51.7 15.5 G382 58.3 29.4 C4219
Hybrids Inbreds Bush Inbreds Yield (t•ha 1 )
Yields of Tropical Pumpkin Compact Plant Inbreds and Their Hybrids. Spring 1995.
55.9 40.6 Soler 54.3 33.0 Seminole 56.8 31.0 Linia C Pinta 53.2 54.6 La Segunda 47.6 35.5 La Primera
Hybrids Inbreds Vining Inbreds Yield (t•ha 1 )
Yields of Tropical Pumpkin Vining Inbreds and Their Hybrids. Spring 1995.
ORIGIN OF COMPACT PLANTS
*Bush Butternut
*Burpee’s Butterbush
*Cornell 894413
ORIGIN OF LONGVINE PARENTS
*Borinquen *Linea C Pinta
*La Primera *Seminole
*La Segunda *Soler
1 0 none to 4 severe silverleaf
0 1.3 0 53 L184 0 1.8 0 25 La Segunda
1.0 1.6 75 35 La Primera
4.0 3.0 100 85 Soler 4.0 3.0 100 90 Linea C Pinta 4.0 4.0 100 90 Borinquen
Severity 1 (%) Cultivar
1992 1991 1992 1991 Incidence and Severity of Silverleaf
54 46 54 46 La Primera
48 45 52 49 42 40 51 47 El Dorado
44 35 47 37 38 33 46 36 La Estrella
Spring Fall Spring
% & % & % & % & Entry Average 2000 1999 1999
ANTHESIS OF TROPICAL PUMPKIN
FLOWERS (DAP)
4.6 4.6 La Primera
4.1 4.2 3.0 5.0 El Dorado
3.6 3.4 2.2 5.3 La Estrella
Spring Fall Spring
Fruit/plant (no.) Entry Average 2000 1999 1999
NUMBER OF FRUIT PER TROPICAL
PUMPKIN PLANT
4.5 4.5 La Primera
2.4 2.3 2.3 2.6 El Dorado
3.2 2.2 3.5 3.8 La Estrella
Spring Fall Spring
Average Fruit Weight (kg) Entry Average 2000 1999 1999
TROPICAL PUMPKIN FRUIT WEIGHT
42.6 42.6 La Primera
62.8 58.2 30.3 100.0 La Estrella
53.3 67.3 27.7 65.0 El Dorado
Spring Fall Spring
Yield (t•ha 1 ) Entry
Average 2000 1999 1999
TROPICAL PUMPKIN YIELDS
Tropical Pumpkin Fruit Characteristics. Spring 2000.
14.0 a 1.29 a 4.9 a 4.6 a La Primera
13.3 a 1.06 b 4.9 a 4.1 b El Dorado
12.3 ab 1.32 a 4.0 b 3.3 c La Estrella
Dry Flesh Flesh
(%) ratio (15) (cm) Entry matter Eq:Polar color thickness
Fruit Characteristics
Total carotenoid and Hunter color values for La Estrella, El Dorado and La Primera tropical pumpkin cultivars. Spring 2001.
42.67 a 70.42 a 40.08 a 14.27 b 71.13 ab 51.67 ab La Primera 41.72 a 66.14 b 38.08 a 16.88 a 69.28 b 48.92 b La Estrella 43.11 a 65.82 b 39.28 a 17.70 a 73.24 a 56.82 a u El Dorado
Hunter chroma v
Hunter Hueº w
Hunter b x
Hunter A* y
Hunter L* z
Carotenoids (mg∙kg 1 FM) Cultivar
z L* = lightness values (100 = white; 0 = black). Y a* = redness, the higher the value the more red the flesh. X b* = yellowness, the higher the value the more yellow the flesh. w Hue angle = measured in degrees from 0360. For this product 0º = red, 45º = orange, and 90º = yellow v Chroma = measures color intensity, the higher the value, the “brighter” the flesh appearance. u Mean separation in columns by Duncan’s multiple range test, 5% level.
El Dorado Tropical Pumpkin Pedigree
M295 894413 Cornell 894413 F 8 F 9 F 1 F 7
TP411 Bulk Self La Primera
Bush Butternut El Dorado Hollar
F 4 D431
TP241 F 8 F 1 F 7 La Segunda Bulk Self S876
NK Seminole Pumpkin
El Dorado
La Estrella Tropical Pumpkin Pedigree
Bush Butternut Hollar
F 4 D431
F 1 F 5 La Segunda G38228 G382 Self S876 Self NK
Seminole Pumpkin
La Estrella
La Primera Self
La Estrella
PUMPKIN VARIETY COMPARISON
+ Yield + Flesh Color + Fruit Uniformity
+ Fruit Size + Earliness
+ Compact Plant La Estrella El Dorado Characteristic
ADVANTAGES OF COMPACTVINE
HYBRID TROPICAL PUMPKINS
*Commercial Seed Availability
*Higher Plant Populations
*Earlier, Concentrated Harvest
*Higher Yields
DISADVANTAGES OF COMPACTVINE HYBRID TROPICAL PUMPKINS
*Higher Seed Costs *Concentrated Maturity for Smallholder Production
SUMMARY •Compact plant type tropical pumpkin inbreds have been developed
•Hybrids have been constructed between compact plant inbreds (SS) and vining and compact plant inbreds (SV)
•Heterosis has been shown
•SS hybrids produce compact plants, SV hybrids develop intermediatelength vines
•SV hybrids are earlier than SS hybrids and produce larger, but more variable fruit
•Compact plants permit greater plant density and higher concentrated yields per unit area
RECOMMENDED TROPICAL PUMPKIN SPACING
1.5 1.0 x 1.5 Compact
5.0 2.0 x 2.5 Vining
Area (m 2 )
Spacing (m) Plant Type
Seed Source Rupp Seeds, Inc. 17919 County Road B
Wauseon, Ohio 43567
Phone: 4193371841
Fax: 4193375491
http://www.ruppseeds.com
ADVANCED
EXPERIMENTAL
HYBRIDS