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 Materials and methods
 Discussion
 Summary
 Tables






Group Title: Research report - Bradenton GCREC - BRA1988-9
Title: Evaluation of Catharanthus roseus (Vinca) during 1986
CITATION PAGE IMAGE ZOOMABLE PAGE TEXT
Full Citation
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Permanent Link: http://ufdc.ufl.edu/UF00067772/00001
 Material Information
Title: Evaluation of Catharanthus roseus (Vinca) during 1986
Series Title: Bradenton GCREC research report
Physical Description: 4, 8 leaves : ; 28 cm.
Language: English
Creator: Howe, T. K ( Teresa K )
Waters, W. E ( Will E )
Gulf Coast Research and Education Center (Bradenton, Fla.)
Publisher: Gulf Coast Research & Education Center, IFAS, University of Florida
Place of Publication: Bradenton FL
Publication Date: 1988
 Subjects
Subject: Catharanthus roseus -- Field experiments -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
non-fiction   ( marcgt )
 Notes
Statement of Responsibility: T.K. Howe and W.E. Waters.
General Note: Caption title.
General Note: "April 1988."
Funding: Florida Historical Agriculture and Rural Life
 Record Information
Bibliographic ID: UF00067772
Volume ID: VID00001
Source Institution: Marston Science Library, George A. Smathers Libraries, University of Florida
Holding Location: Florida Agricultural Experiment Station, Florida Cooperative Extension Service, Florida Department of Agriculture and Consumer Services, and the Engineering and Industrial Experiment Station; Institute for Food and Agricultural Services (IFAS), University of Florida
Rights Management: All rights reserved, Board of Trustees of the University of Florida
Resource Identifier: oclc - 73716989

Table of Contents
    Copyright
        Copyright
    Materials and methods
        Page 1
    Discussion
        Page 2
        Page 3
    Summary
        Page 4
    Tables
        Page 5
        Page 6
        Page 7
        Page 8
        Page 9
        Page 10
        Page 11
        Page 12
Full Text





HISTORIC NOTE


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or recommendations. These texts
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Agricultural Sciences and should be
used only to trace the historic work of
the Institute and its staff. Current IFAS
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(EDIS)

site maintained by the Florida
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Copyright 2005, Board of Trustees, University
of Florida




[co



GULF COAST RESEARCH & EDUCATION CENTER -i
(CP- ) IFAS, UNIVERSITY OF FLORIDA
5007 60TH STREET EAST i
BRADENTON, FL 34203

Bradenton GCREC Reseach Report BRA1988-9 April 1988

EVALUATION OF CATHARANTHUS ROSEUS (VINCA) DURING 1986
T. K. Howe and W. E. Waters1

Interest in the use of Catharanthus roses (periwinkle or vinca) in
the landscape has risen in recent years. Vinca is tolerant of heat,
drought and air pollution. Disease and insect problems are infrequent and
the plant is easily propagated from seed. These qualities make vinca an
attractive plant for use in Florida landscapes. Inquiries about various
cultivars and surveys conducted by Bedding Plants Incorporated, which
placed vinca among top ranked planned increase items for the last several
years, prompted the cultivar trials the Gulf Coast Research and Education
Center, Bradenton, FL. Vinca was assessed in 6-inch pots and in field
beds during the spring, summer and fall seasons of 1986.
Materials and Methods

Transplant production Seed of vinca cultivars (Table 1) were sown
in flats filled with peat:vermiculite medium (1:1, v:v, amended with
dolomite (16.9 lb/yd3), superphosphate (0-8.7-0, N-P-K at 5.5 lb/ydJ) and
minor elements (1.1 Ib/yd ) on 29 Jan., 17 Apr. and 21 Jul. Seedlings
were transplanted into 1.5 x 1.5 x 2.5 inch containerized cells filled
with the same peat:vermiculite medium. Transplants received liquid
fertilizer (20-8.7-16.6, N-P-K) as needed during production. No plant
growth regulators were used in this study. Seedling damp-off was a
problem in the spring and fall, and ethazole was applied as a drench.
Field trials Beds of EauGallie fine sand were formed to a width of
30 inches on 4.5 ft. centers. Slow release fertilizer (1673 Ib/acre
Osmocote 18-2.6-11.2 (N-P-K)) was broadcast over the full bed surface and
incorporated to a depth of 3-4 inches. Beds were fumigated with 67%
methyl bromide:33% chloropicrin and covered with black polyethylene mulch
in the spring and white polyethylene mulch in the summer and fall. The
fields were irrigated by seepage via lateral ditches spaced every 7 beds.
The trial area was in full sun. Plants were set into beds staggered on 12
inch centers with three rows per bed on 31 Mar, 11 Jun, and 3 Sep. Plants
were drenched with 20-8.7-16.6 N-P-K at 5 lb/100 gal water. Four
replications of six plants per cultivar were arranged in a randomized
complete block design. Pest pressure throughout the year was very light,


1Biological Administrator I and Center Director, respectively.







however, the summer trial was affected by an unidentified disease which
caused tip die-back.

Container trials Transplants, produced as described above, were set
one per 6-inch pot on 10 Apr, 18 Jun and 11 Sep. Potting medium consisted
of peat:vermiculite:sand:perlite (1.6:l:l:0.5,v:v) amended with dolomite
(18.7 Ib/yd3), superphosphate (4.7 Ib/yd3), Micromax (1.4 Ib/yd3) and
Osmocote 18-2.6-11.2 (8 Ib/yd3). Six pots of each cultivar were arranged
on 15 inch centers in three rows on a raised bed in a randomized complete
block design. Plants were in a sarancloth production house with
approximately 70% full sunlight. Plants were irrigated by hand.

Data collection Cultivars were evaluated for earliness to flower,
flower size and color, plant growth habit, mature plant dimensions, and
other horticultural qualities. Subjective ratings were assigned to field
plots based on a 1 to 10 scale, where 1 was poor and 10 was excellent.
Vigor, floriferousness, habit and uniformity were considered in this
single rating. Subjective ratings were assigned to potted plants in three
categories: habit, flower cover and overall. These ratings were based on
a 1 to 5 scale, where 1 was poor and 5 was excellent. The overall rating
combined the other two categories as well as plant vigor.

DISCUSSION

In the spring and summer, daily temperatures were typical as compared
to the 32-year means (Table 2). In the fall, mean temperatures were above
normal, especially the overnight minimum temperatures, for the months of
October, November and December.

Field trials (Tables 3, 4, 5) The three categories of vinca
(creeping, border and bush) were clearly distinguished by plant height at
maturity during each season. The 'Rosea' cultivars were always tallest
(15-18 inches), the 'Little' series, 'Pink Panther' and 'Morning fist'
were of intermediate height (10.5 15 inches) and the 'Carpet' series and
'Polka Dot' were the shortest (5.5 8 inches). In contrast, plant width
was not consistent within cultivar series or among the three plant types.

The three vinca types were indistinguishable with respect to flower
diameter. 'Morning Mist' produced small, atypical flowers during the
summer and fall in which the petals of the flowers were either very close
together or overlapping. And although 'Little Bright Eye' displayed a
typical flower in the spring and summer, it was observed to have flowers
with overlapping petals in the fall. Number of dFays to flower from seed
sowing ranged from 73 to 83 days in the spring, 55 to 64 days in the
summer and 55 to 66 days in the fall. No plant type or cultivar series
was consistently early.

Ratings of 7 or greater in the spring were given to all but four
entries. Those four were creeping types and ha;; low scores due to plant
losses, plant stunting and chlorosis. In the sumiier, ratings were given
on two occasions, 24 Jul and 21 Aug. On 24 Jul, ratings ranged from 6.8
to 9.4 where only two entries 'Polka Dot' and 'Pink Panther', were rated
significantly lower than the highest score. On 21 Aug, the ratings ranged






from 4.4 to 9.1 where the three 'Vinca Rosea' cultivars and 'Polka Dot'
were rated significantly lower than 'Little Pinkie' and 'Little Delicata'.
The 'Vinca Rosea' cultivars declined in quality rapidly during the period
between the two rating dates. Ratings were also assigned twice for the
fall trial, on 16 Oct and 3 Dec. Ratings ranged from 8.0 to 9.9 on 16 Oct
and ranged from 3.4 to 8.4 on 3 Dec. 'Morning Mist' was prominent in the
rapid decline of quality. In addition to having small flowers and leaves
during the season, as time progressed the leaves became extremely small
and plants were nearly devoid of flowers by 3 Dec.

Container Trials (Tables 6, 7, 8) As in the field trials, there
were clear distinctions among the bush, border and creeping types of vinca
with respect to mature plant height. The 'Rosea' cultivars were tallest
(15 18 inches) each season, the 'Carpet' series and 'Polka Dot' were the
shortest (4 8 inches), and the 'Little' series, 'Pink Panther' and
'Morning Mist' were of intermediate height (10 14 inches).

Flower size varied among the entries. Cultivars within the 'Carpet'
series were not uniform in flower size, except during the spring when all
'Carpet' cultivars had the smallest flowers, however, not all cultivars
were significantly smaller than the other series. No cultivar series or
category of vinca was earlier to flower in any season.

When rated for plant habit in 6-inch pots, the 'Rosea' cultivars were
rated below 3 (acceptable). These bush type vinca were too tall and open
in growth habit to be attractive as a single specimen in a 6-inch pot.
The plants lodged and grew in less than upright conformations. The
'Rosea' cultivars were acceptable in the number and distribution of
flowers, however, the large, open frame of the plant gave the appearance
of fewer flowers. (In mass plantings in the field trial this feature was
less obvious.) Overall ratings for the bush type cultivars were generally
just below acceptable.

The creeping type vinca cultivars generally received ratings near 3
(acceptable) for growth habit in containers. These cultivars were
somewhat lopsided, eg. draping one side of the container. In the spring,
'Dawn Carpet' and 'Snow Carpet' habit ratings were near 4 and in the
summer 'Snow Carpet' was rated near 4. These particular cultivars draped
over the container evenly, and would be acceptable in hanging baskets
also. Flower cover was acceptable for the creeping-type cultivars. There
was the tendency for these types to be bare of flowers in the center of
the plant until later in the season. This was also observed in the field,
although mass plantings masked this tendency to some degree due to the
overlapping branches of plants. Overall ratings for the creeping type
vinca ranged from below average (near 2) to above average (near 4).
Individual cultivars had superior ratings within the group each season
(eg. 'Snow Carpet').

The 'Little' series and 'Pink Panther' were well suited for use in 6-
inch containers, whereas 'Morning Mist' was not. Except for six
instances, growth habit ratings were 3.7 or above for the 'Little'
cultivars in all three seasons. And except for four instances, flower
cover ratings were equal to or greater than 3.7. Overall ratings for the
'Little' series ranged from 3.3 to 4.8 during the three seasons. The







conformation of the border types in pots ',-as the deteri.ining factor in the
above average to excellent overall performance ratings. The plants :.er:
compact and square with slight tendency to lodge. The dwarf, upright
growth habit has been heavily favored by commercial growers (Dall Red,
Book, 19O8; Dedding Plants III, 1985).

Summary

Dased on three seasons of evaluation in field trials, the 'Little'
series was best suited for planting during the spring, summer or fall, the
'Vinca Rosea' cultivars performed better in the spring or fall than in the
summer, whereas the 'Carpet' series did best in the summer and fall.

The 'Little' series and 'Pink Panther' were well suited for use in 6-
inch containers, whereas, the taller bush-type 'Vinca Rosea' cultivars
were definitely not. The creeping-type vinca received only fair ratings
for use in 6-inch containers.

NJote: The information contained in this report is a summary of
experimental results, and should not be used as recommendations
for crop production. Hhere trade names are used, no
discrimination is intended and no endorsement is implied. The
authors wish to thank Sierra Chemical Co. of ililpitas, CA for
the donation of Osmocote fertilizer used in this study.








Table 1. Catharanthus roseus (Vinca) cultivars, with description,
evaluated in trials during 1986.

Cultivarz Flower Color Type of Habit

Carpet Series
Dawn It, pink w/rose ctr creeping
Magic mix creeping
Pink med. pink w/rose ctr creeping
Rose v. dk. purple-pink creeping
Snow white w/yellow ctr creeping

Little Series
Blanche white w/yellow ctr border (dwarf upright)
Bright Eye white w/red ctr border (dwarf upright)
Delicata It. pink w/rose ctrY border (dwarf upright)
Formula Mix mix border (dwarf upright)
Linda dk. purple-pink border (dwarf upright)
Pinkie med. pink w/dk. ctr border (dwarf upright)
Rosie dk. purple-pink border (dwarf upright)

Morning Mist white w/rose ctr border (dwarf upright)
Pink Panther v. dk. red-pink border (dwarf upright)
Polka Dot white w/red ctr creeping
Tall Rosea Mix mix bush (tall upright)
Vinca Rosea Alba White white w/yellow ctr bush (tall upright)
Vinca Rosea Mix mix bush (tall upright)
Vinca Rosea Rose med. pink w/rose ctr bush (tall upright)

zCooperating seed companies included: Ball Seed Co., W. Chicago, IL;
Bodger Seeds Ltd., El Monte, CA; Denholm Seeds, Lompoc, CA; Harris ioran
Seed Co., Rochester, NY; Geo. W. Park Seed Co., Greenwood, SC; and Sakata
Seed America Inc., Salinas, CA.

YSome commercial seed catalogs list 'Little Delicata' as having flowers
which are white with rose center.









Table 2. Temperature and rainfall for 1986 and 32-year averages for
Bradenton, FL.z

1986 32-year average
Daily Temp (oF) Rainfall Daily Temp (OF) Rainfall
Month Max. Min. (inches) Max. Min. (inches)

Jan. 72 48 3.06 71 49 2,60
Feb. 77 54 3.16 79 51 3.27
Mar. 77 53 3.18 77 55 3.15

Apr. 81 55 0.93 82 60 1.63
May 88 64 1.93 87 64 3.15
Jun. 90 70 7.80 91 70 7.73

Jul. 90 73 11.18 91 72 9.06
Aug. 92 73 10.44 91 72 10.07
Sep. 91 72 6.07 89 71 8.27

Oct. 86 67 3.37 85 64 2.83
Nov. 85 67 2.95 78 57 1.95
Dec. 77 59 2.78 73 52 2.42


ZStanley, C. D. 1986. Temperature and
Bradenton GCREC Res. Rept. BRA1987-5.


rainfall report for 1986.









Table 3. Growth and performance of vinca cultivars in field beds at
through 16 May)


the G.C.R.E.C., Bradenton, FL. (31 Mar.


Flower
Plant Heightz Plant Widthz Diameterz Days to
Cultivar (inches) (inches) (inches) FlowerY Ratingx

Vinca Rosea Rose 17.2 a" 16.9 b 1.9 ab 77 e 9.5 ab
Vinca Rosea Mix 16.0 b 16.6 bc 1.9 a-c 79 b-e 10.0 a
Vinca Rosea Alba White 15.9 b 16.6 bc 1.9 a-c 81 a-d 10.0 a
Tall Rosea 1ix 15.5 b 16.1 b-d 2.0 a 79 b-e 9.5 ab
Little Formula lix 13.0 c 16.1 b-d 1.9 ab 83 a 8.8 a-c
Little Blanche 12.9 c 14.9 b-e 1.8 a-d 79 c-e 8.5 a-c
Little Bright Eye 12.6 c 14.6 b-e 1.7 b-d 78 e 9.0 a-c
Little Delicata 10.5 d 14.2 de 1.8 a-d 73 f 7.3 a-d
Snow Carpet 8.4 e 19.4 a 1.9 ab 31 a-d 8.0 a-c
Magic Carpet 7.8 e 16.0 b-d 1.8 a-d 82 a 6.8 b-d
Rose Carpet 7.6 ef 13.8 e 1.7 b-d 81 a-c 7.3 a-d
Polka Dot 7.6 ef 13.5 e 1.7 b-d 82 ab 6.3 cd
Pink Carpet 7.5 ef 14.6 c-e 1.7 cd 79 de 5.0 d
Dawn Carpet 6.7 f 14.8 b-e 1.6 d 83 a 4.5 d


ziieasured 14 May.
YDays from sowing to opening of
XRating scale; 1 = poorest, 5 =
Ratings given 16 May.
Wiiean separation within columns


the first flower. Sown 29 Jan.,
acceptable; 10 = excellent.


except Little Delicata, sown 11 Feb.


by Duncan's multiple range test, 5% level.








Table 4. Growth and performance of vinca
through 21 Aug.)


cultivars in field beds at the G.C.R.E.C., Bradenton, FL. (11 Jun.


Flower
Plant Heightz Plant Widthz Diameterz Days to Ratingx Ratingx
Cultivar (inches) (inches) (inches) FlowerY No, 1 No. 2

Vinca Rosea Mix 18.1 a" 16.2 c-f 2.0 a 64 a 8.9 a-c 5.2 b
Vinca Rosea Rose 18.0 a 17.8 a-c 2.0 a 59 c-e 9.1 ab 4.4 b
Vinca Rosea Alba White 16.3 a 17.2 b-d 2.0 a 59 c-e 8.6 a-c 4.9 b
Little Blanche 14.4 b 15.8 c-f 1.9 ab 60 b-e 8.1 a-c 7.6 ab
Little Linda 13.5 bc 16.8 c-e 2.0 a 62 a-c 7.6 a-c 5.9 ab
Little Bright Eye 13.3 bc 14.4 e-g 1.9 a-c 60 b-e 8.3 a-c 7.1 ab
Little Pinkie 13.2 bc 15.8 c-f 1.9 ab 55 f 9.0 a-c 9.1 a
Pink Panther 12.4 b-d 13.0 g 1.8 b-e 60 b-e 7.0 bc 7.3 ab
Morning Mist 11.7 cd 13.6 fg 1.7 e 60 b-e 7.3 a-c 6.0 ab
Little Delicata 11.7 cd 14.9 d-g 1.9 a-d 61 b-d 8.8 a-c 8.9 a
Little Rosie 11.0 d 13.6 fg 1.8 a-e 58 de 8.5 a-c 7.4 ab
Snow Carpet 7.6 e 19.7 ab 2.0 a 61 b-e 9.4 a 7.1 ab
Polka Dot 7.2 e 20.0 a 1.9 a-d 59 c-a 6.8 c 5.0 b
Magic Carpet 6.6 e 17.4 a-d 1.9 ab 62 ab 7.5 a-c 6.4 ab
Dawn Carpet 6.3 e 17.9 a-c 1.8 c-e 60 b-e 7.5 a-c 6.3 ab
Pink Carpet 6.0 e 19.6 ab 1.7 de 58 ef 9.1 ab 7.4 ab


ileasured flower diameter 14 Jul.; measured plant dimensions 23 Jul.
YDays from sowing to opening of the first flower. Sown 17 Apr.
Rating scale: 1 = poorest, 5 = acceptable, 10 = excellent.
Rating No. 1 given 24 Jul.
Rating No. 2 given 21 Aug.
WMean separation within columns by Duncan's multiple range test, 5% level.










Table 5. Growth and performance of vinca cultivars in field
through 3 Dec.)


beds at the G.C.R.E.C., Bradenton, FL. (3 Sep.


Flower
Plant Heightz Plant Widthz Diameterz Days to Ratingx Ratingx
Cultivar (inches) (inches) (inches) FlowerY No. 1 No. 2

Vinca Rosea Rose 18.1 a" 20.6 a-c 1.9 ab 61 b-d 8.8 bc 6.4 ab
Tall Rosea Mix 18.0 a 20.1 a-c 1.9 ab 66 a 9.1 ab 5.0 bc
Vinca Rosea Mix 17.7 a 18.0 bc 2.0 ab 59 c-e 9.0 ab 6.9 ab
Vinca Rosea Alba White 16.7 a 20.8 ab 2.0 a 63 b 8.9 a-c 6.5 ab
Little Blanche 14.5 b 18.8 bc 1.9 ab 57 ef 9.6 ab 7.1 a
Little Formula Mix 14.1 bc 17.7 bc 1.9 ab 55 f 8.8 bc 6.9 ab
morning Mist 13.9 bc 18.7 bc 1.6 c 62 bc 8.9 a-c 3.4 c
Pink Panther 13.6 bc 19.5 bc 1.9 ab 59 c-e 9.1 ab 7.4 a
Little Delicata 13.2 bc 19.0 bc 1.8 b 63 b 9.8 ab 7.9 a
Little Linda 13.2 bc 19.3 bc 1.9 b 58 d-f 9.6 ab 7.5 a
Little Rosie 12.8 bc 17.5 c 1.9 ab 61 bc 9.9 a 8.3 a
Little Bright Eye 12.7 c 18,9 bc 1.8 b 59 c-e 9.5 ab 6.6 ab
Polka Dot 5.7 d 22.7 a 1.9 b 61 b-d 9.1 ab 8.4 a
Magic Carpet 5.3 d 22.9 a 1.8 b 63 b 8.0 c 7.6 a


Zfeasured flower diameter 15 Oct.; measured plant dimensions 16 Oct.
YDays from sowing to opening of the first flower. Sown 21 Jul.
XRating scale; 1 = poorest, 5 = acceptable, 10 = excellent.
Rating No. 1 given 16 Oct.
Rating No. 2 given 3 Dec.
W"ean separation within columns by Duncan's multiple range test, 5% level.










Table 6. Growth and performance of vinca cultivars in
through 9 Jun.).


6 inch pots at the G.C.R.E.C., Bradenton, FL. (10 Apr.


Flower Ratingsx
Plant Heightz Plant Widthz Diameterz Days to Flower
Cultivar (inches) (inches) (inches) FlowerY Cover Habit Overall

Vinca Rosea Rose 15.7 aW 22.9 a 2.0 ab 77 d 3.7 a-c 2.5 c-e 2.8 d-f
Vinca Rosea Alba White 15.3 a 21.3 ab 2.0 ab 81 b-d 3.3 cd 2.4 c-e 2.8 d-f
Vinca Rosea Mix 14.9 a 20.0 a-c 2.0 ab 87 a 3.3 cd 2.3 de 2.5 ef
Little Formula Mix 14.1 ab 18.1 b-d 2.1 a 85 ab 3.4 b-d 3.7 ab 3.7 a-d
Little Bright Eye 12.7 bc 17.5 b-d 2.0 ab 81 b-d 4.3 ab 3.9 ab 3.9 ab
Little Blanche 12.0 c 17.0 cd 2.0 ab 80 b-d 4.4 a 4.2 a 4.2 a
Little Delicata 11.0 c 18.2 b-d 1.9 a-c 76 d 3.9 a-c 4.1 a 4.0 ab
Snow Carpet 7.2 d 18.6 b-d 1.8 b-d 82 a-d 4.0 a-c 3.8 ab 3.8 a-c
iagic Carpet 6.4 d 15.6 cd 1.6 d 81 b-d 3.3 cd 3.1 bc 3.2 b-e
Pink Carpet 6.3 d 18.5 b-d 1.7 cd 79 cd 3.1 cd 2.8 c-e 2.9 c-f
Dawn Carpet 5.8 d 17.8 b-d 1.7 cd 88 a 3.8 a-c 4.0 a 3.8 a-c
Rose Carpet 5.5 d 14.8 de 1.7 d 85 a-c 2.8 de 2.9 cd 2.7 ef
Polka Dot 5.3 d 12.6 e 1.6 d 86 ab 2.0 e 2.1 e 2.2 f


Zieasured 9 Jun.
YDays from sowing to opening of
XRating scale for flower cover,
Rating given 9 Jun.
WIean separation within columns


the first flower.


Sown 29 Jan.; except Little Delicata sown 11 Feb.


habit and overall; 1 = poorest, 3 = acceptable, 5 = excellent.


by Duncan's multiple range test, 5% level.









Table 7. Growth and performance of vinca cultivars in 6 inch
through 5 Aug.)


Bradenton, FL. (18 Jun.


FlowerzY RatingX
Plant Heightz Plant Widthz Diameter Flower
Cultivar (inches) (inches) (inches) Cover Habit Overall

Vinca Rosea Rose 16.2 aW 15.7 a-e 2.3 a 3.7 ab 2.7 e-i 3.1 d-f
Vinca Rosea Alba White 15.8 a 15.0 b-f 2.2 a-c 3.7 ab 2.3 hi 2.8 f-h
Vinca Rosea lix 15.5 a 15.3 a-f 2.2 a-c 3.5 a-c 2.1 i 2.5 gh
Tall Rosea Mix 15.0 a 14.6 b-f 2.1 a-d 3.3 bc 2.6 f-i 3.0 d-g
Little Formula Mix 13.0 b 12.9 ef 2.1 a-d 3.8 ab 3.7 a-c 3.7 a-c
Little Blanche 12.9 b 13.3 d-f 2.1 a-d 4.0 a 3.9 a 4.2 a
Little Pinkie 12.9 b 13.0 d-f 2.1 a-d 3.8 ab 3.5 a-d 3.8 a-c
Little Bright Eye 12.8 b 12.7 f 2.2 ab 3.8 ab 3.7 a-c 3.8 ab
Little Delicata 12.3 b 13.8 c-f 2.1 a-d 3.7 ab 3.9 a 3.9 ab
Pink Panther 12.0 b 12.8 f 2.0 b-d 3.6 ab 3.1 b-g 3.3 c-f
Little Linda 11.8 bc 14.1 b-f 2.0 a-d 3.8 ab 3.2 b-g 3.5 b-d
morning Mist 11.0 bc 14.5 b-f 1.8 e 4.0 a 2.0 i 2.3 h
Little Rosie 9.8 c 13.0 d-f 2.0 c-e 3.3 bc 3.3 a-f 3.4 b-e
Snow Carpet 7.8 d 15.8 a-d 2.1 a-d 4.0 a 3.8 ab 3.9 ab
Magic Carpet 5.9 de 16.8 ab 2.0 c-e 3.7 ab 3.1 b-g 3.3 c-f
Pink Carpet 5.5 e 16.5 a-c 1.9 de 3.5 a-c 2.9 d-h 3.0 d-g
Dawn Carpet 5.5 e 15.5 a-f 1.9 de 4.0 a 3.3 a-e 3.5 b-d
Rose Carpet 5.4 e 14.5 b-f 2.0 c-e 3.0 c 3.0 c-h 2.9 e-g
Polka Dot 5.1 e 17.9 a 2.0 a-d 3.3 bc 2.5 g-i 2.8 f-h


ZMeasured 23 Jul.
YAll cultivars flowering when transplanted to pots on 18 Jun. Sown 17 Apr.
XRating scale for flower cover, habit and overall; 1 = poorest, 3 = acceptable,
23 Jul.
WMean separation within columns by Duncan's rmult'le ;~"-re -st 5, level.


5 = excellent. Ratings given


pots at the G.C.R.E.C.,









Table 8. Growth and performance of vinca cultivars in
(11 Sep. through 16 Oct.)


6 inch pots at the G.C.R.E.C., Bradenton, FL.


Flower Ratingsx
Plant Heightz Plant Widthz Diameterz Days to Flower
Cultivar (inches) (inches) (inches) FlowerY Cover Habit Overall

Vinca Rosea Rose 17.6 a" 19.4 ab 2.0 a-c 62 c-f 3.3 d-f 2.8 b-e 2.8 c-f
Vinca Rosea Alba White 16.3 a 17.3 d-f 2.1 a 61 d-g 3.2 d-f 2.2 de 2.3 f
Vinca Rosea Mix 16.1 a 16.9 d-f 2.0 a-c 61 d-g 2.9 ef 2.5 c-e 2.7 d-f
Little Bright Eye 13.1 b 15.7 f 1.8 cd 59 f-h 3.8 b-d 3.3 b-d 3.6 c-d
Little Formula Mix 12.7 b 16.8 d-f 2.0 a-c 56 h 3.8 b-d 3.8 b 3.8 b
Little Delicata 12.5 b 16.8 d-f 2.0 ab 65 b-d 4.8 a 4.9 a 4.8 a
Little Blanche 12.5 b 17.6 c-e 1.8 b-d 57 gh 4.3 a-c 3.5 bc 3.7 bc
Little Linda 11.6 b 17.0 d-f 2.1 a 59 e-h 3.4 d-f 3.2 b-d 3.3 b-e
Little Rosie 11.4 b 16.3 d-f 2.0 ab 64 b-d 3.4 d-f 3.9 b 3.7 bc
Pink Panther 11.2 b 17.9 b-d 1.9 a-d 57 gh 3.8 c-e 3.3 b-d 3.6 b-d
Morning Mist 10.6 b 16.0 ef 1.7 d 63 c-f 4.7 ab 1.8 e 2.4 ef
Polka Dot 5.7 c 19.1 a-c 2.0 a-c 66 a-c 2.9 ef 3.0 b-d 3.2 b-f
Magic Carpet 5.6 c 20.0 a 2.0 ab 68 ab 2.5 f 2.9 b-e 3.0 b-f
Dawn Carpet 4.3 c 18.1 b-d 2.0 a-c 70 a 3.3 d-f 2.9 b-e 3.3 b-e
Rose Carpet 3.9 c 17.2 d-f 2.0 ab 64 b-e 2.3 f 2.8 b-e 2.8 c-f

ZMeasured 16 Oct.
YDays from sowing to opening of the first flower. Sown 21 Jul.
XRating scale for flower cover, habit and overall, 1 = poorest, 3 = acceptable, 5 = excellent. Ratings given
15 Oct.
wMean separation within columns by Duncan's multiple range test, 5% level.




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