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Group Title: Evaluations of sweet corn varieties.
Title: Evaluations of sweet corn varieties. Spring 1996
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Permanent Link: http://ufdc.ufl.edu/UF00075807/00003
 Material Information
Title: Evaluations of sweet corn varieties. Spring 1996
Series Title: Evaluations of sweet corn varieties.
Translated Title: Research Report - University of Florida Institute of Food and Agricultural Sciences ; 97-01 ( English )
Physical Description: Serial
Language: English
Creator: White, James M.
Hancik, Ivalou D.
Publisher: Central Florida Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida
Publication Date: 1996
 Record Information
Bibliographic ID: UF00075807
Volume ID: VID00003
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 144607376

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HISTORIC NOTE


The publications in this collection do
not reflect current scientific knowledge
or recommendations. These texts
represent the historic publishing
record of the Institute for Food and
Agricultural Sciences and should be
used only to trace the historic work of
the Institute and its staff. Current IFAS
research may be found on the
Electronic Data Information Source
(EDIS)

site maintained by the Florida
Cooperative Extension Service.






Copyright 2005, Board of Trustees, University
of Florida






C flarston Science
CFS /University of Florida i b r cary
3), "/- 0 / Institute of Food & Agricultural Sciences
Central Florida Research & Education Center AUG 1 3 199
Sanford, FL 32771-9608

Research Report SAN 97-01 n1ie ugusti" q

Evaluations of Sweet Corn Varieties, Spring 1996

J. M. White and Ivalou D. Hancik


A supersweet (shrunken-1 gene) sweet corn variety trial was conducted in the Zellwood
area at Crakes & Son, Inc., Apopka, FL, during the spring 1996 growing season. The trial was
limited to cultivars/breeding lines of the gene type homozygous shrunken-2 (sh2), i.e., supersweet,
since these cultivars are the standard for commercial growers. Yellow, white, and bicolored lines
were included in the trial.

The kernels of the sh2 type sweet corn have at least 2-3 times the total sugars of "normal"
sweet corn at optimum harvest; conversion of sugar to starch is much slower. This slower
conversion facilitates a longer harvest and storage period along with an increased time for
consumption. Consumer preference has shifted toward the supersweet type sweet corn. In light
of the widespread use of sh2 type sweet corn, it is important to evaluate commercially available
and advanced breeding lines for their adaptability to central Florida's growing conditions.

Materials & Methods

Seeds were planted by hand on March 19, 1996; plots were single-row 3'wide x 20' long
with 9" in-row spacing. Four replications were arranged in a randomized complete block design,
with the first replication being a demonstration trial for a field day.

Cultural practices, provided by the cooperating grower, were comparable to the routine
practices used by commercial growers to produce a sweet corn crop in central Florida.

Plots were harvested by hand at peak maturity, beginning May 28 and ending June 6.
Only first ears and/or marketable second ears were harvested. Individual plots were harvested
only once. Ears were counted and weighed; subsamples of 10 marketable ears/plot were selected,
husked, and evaluated for length, width, maturity, tip fill, husk cover, and kernel color (Table 1).
Weather data are recorded in Table 2.

Results and Discussion

Sweet corn yields, expressed as 42 lb crates/acre, ranged from 155-425 crates/acre. The
five top-yielding entries were XPH 3105, Maverick, XPH 3103, 3056, and HMX 43435. The
lowest yielding lines in the trial were FMX 412 and FMX 402.








Considerable variation in ear length among lines was recorded; ear length (cm) ranged
from 17.6 (Sweet Magic) to 21.2 (Scrumptious). Ear diameter (cm) was less variable ranging
from 3.9 (GSS 7887) to 5.1 (Victor).

Husk cover was marginal on UFBC1352R, Silver Dollar, and Sweet Magic as evidenced
by protruding ear tips, green tips, and loose husks. Tip fill was generally acceptable; however,
UFBC 1352R, FMX 413, and Scrumptious were somewhat weak in tip fill.

This report is not intended to recommend one variety over another, but rather is meant
as a general guideline for variety selection. Different field locations, planting dates, and cultural
practices may alter the performance of these sweet corn lines; growers should be mindful of this
variability when selecting a new variety and planting small tests area of new varieties may be
advisable.

Seed Sources

AG Agrisales, Inc., P. O. Box 2060, Plant City, FL 33564
AS Asgrow Seed Co.., 7000 Portage Rd., Kalamazoo, MI 49001
ER Everglades-REC, P. O. Box 8003, Belle Glade, FL 33430-8004
FM Ferry-Morse Seed Co., Box 4938, Modesto, CA 95352-4938
GL Gardenland, 1400 W. First Street, Sanford, FL 32771
HM Harris Moran Seed Co., P. O. Box 3091, Modesto, CA 95352
RO Rogers Seed Co., P. O. Box 4188, Boise, ID 83711-4188




w


U


Table 1. Sweet corn variety trial Zellwood, FL Spring 1996.


Days to Yield/acrey Husk Tip Kernel Avg. earu (cm)
Entry Source harvest crates cwt cover" fillw color' length diam. Maturityt Notes and comments

XPH 3105 AS 70 425 az 179 a 4.0 a-f 4.8 a Y 18.7 g-n 4.5 b-d +1 long flags
Maverick AS 77 420 a 176 a 3.2 d-f 4.2 a-c Y 20.5 b 4.5 b-d 0 no flags, green tips
XPH 3103 AS 72 413 a 174 a 4.7 a-c 4.7 ab W 17.9 m-o 4.1 f-h -2 medium flags
3056 AG 77 392 ab 165 ab 4.8 ab 4.0 b-d Y 20.0 b-d 4.7 b 0 long flags
HMX 4343S HM 77 391 ab 164 ab 5.0 a 4.2 a-c Y 18.5 h-n 4.4 c-e 0 medium flags
-------------------------------------------------------------------------------------------------------------------------------------------------------------


UFBC 1352R
Appalossa
BSS-1609
WSS-9748
UFWC 1429R


379
379
378
375
375


a-c
a-c
a-d
a-e
a-e


159
159
159
157
157


a-c
a-c
a-c
a-e
a-e


1.7
4.8
4.8
4.2
4.0


g
ab
ab
a-e
a-f


4.7
5.0
5.0
5.0
4.5


ab
a
a
a
a-c


19.1
18.1
19.4
18.5
19.2


f-j
k-o
d-g
h-n
e-i


4.6 c
4.6 be
4.1 f-h
4.3 d-f
4.4 c-e


+2
+1
0
0
0


long flag, green tips
short/few flags
long flags, long shank
medium flags/glossy
medium flags, crooked rows, thin husk


UFBC 1439R
FMX 413
Punchline
FMX 404
XP-7


Primetime
Endeavor
Day Star
Headliner
Forever


ER
FM
AS
FM
AG


364
360
357
356
350


RO
AS
HM
AG
AS


347
341
338
337
336


a-e
a-e
a-e
a-e
a-e


a-e
a-e
a-e
a-e
a-e


153
151
150
150
147


146
143
142
142
141


a-e
a-e
a-e
a-e
a-e


a-e
a-e
a-e
a-e
a-e


3.5
4.7
5.0
5.0
5.0


4.8
4.7
4.8
5.0
5.0


c-f
a-c
a
a
a


3.8
3.0
4.7
4.3
5.0


ab
a-c
ab
a
a


5.0
4.2
4.3
5.0
4.0


cd
e
ab
a-c
a


a
a-c
a-c
a
b-d


20.3
18.7
17.8
19.2
18.3


19.4
19.2
19.0
19.0
20.7


be
g-n
no
e-i
i-o


4.4 c-e -1 little flags, some green tips
4.5 b-d 0 medium flags
4.2 e-g 0 small flags, small kernels
4.2 e-g 0 medium flags
4.3 d-f -1 long flags

4.0 g-i 0 long flags, easy husk/snap
4.4 c-e 0 short flags
4.7 b 0 medium flags
4.3 d-f 0 medium flags
4.7 b -1 long flags


d-g
e-i
f-1
f-1
ab


Victor FM 77 331 a-e 139 a-e 3.7 b-f 4.0 b-d Y 20.0 b-d 5.1 a +1 medium flags, too fat
BSS 4340 RO 72 330 a-e 139 a-e 4.8 ab 4.7 ab B 19.3 d-h 4.3 d-f 0 medium flags
Scrumptious AG 77 326 a-e 137 a-e 4.5 a-c 3.3 de Y 21.3 a 4.6 bc +1 long flags
UFY 13-14 AG 70 326 a-e 137 a-e 3.5 c-f 5.0 a Y 19.6 c-f 4.5 b-d +2 long flags
Silver Dollar HM 72 326 a-e 137 a-e 2.8 f 5.0 a W 18.3 i-o 4.7 b +1 long flags, pointy, hard to husk
- ----------------------------------------------------------------------------------------------------- 7------------------------------------------------------


ER
AG
RO
RO
ER


------------------------------------------ -- -- -- -- -- - -- - - - -- --- -- - - - -


----------------------------------------- --- --- ---- -- - ---- -- -- -- -- -- -- --- -- --- ---





Table 1.


Days to
VrvicrnP nbrinmct+


Yield/acrey
rrqthc r'Cwtf


Husk
coverx


Entry r Uk IA..' JAWU tLiu at%.-kJ HVL%%. al_-- L


Tip
fill"


Kernel
colors


Avg. ear" (cm)
length diam.


Maturityt


Notes and comments


FL Staysweet
Sweet Magic
HMX 3365BS
HMX 3364BS
UFY C4468


GL,
HM
HM
HM
ER


318
311
311
290
281


a-e
a-e
a-e
b-e
b-e


134
131
131
122
118


a-e
a-e
a-e
b-e
b-e


5.0
3.0
5.0
4.3
5.0


a
ef
a
a-d
a


4.7
5.0
5.0
5.0
5.0


19.4 d-g
17.6 o
18.0 l-o
18.2 j-o
18.5 h-n


4.5
4.5
4.7
4.3
4.5


b-d
b-d
b
d-f
b-d


long flags
medium flags
medium flags, too short
medium flags, glossy
medium flags, lots of husk


GSS 3577 RO 72 277 b-e 116 b-e 3.7 b-f 4.7 ab Y 18.1 k-o 4.3 d-f +2 medium flags
GSS 7887 RO 72 265 c-f 111 c-f 4.5 a-c 5.0 a Y 18.9 g-1 3.9 i 0 medium flags, long shank, easy husk
GSS 1526 RO 77 256 d-g 108 d-g 4.7 a-c 4.0 b-d Y 19.3 d-h 4.5 b-d 0 short flags, slight curve
FMX 414 FM 72 254 e-g 107 e-g 3.8 a-f 4.3 a-c W 18.8 g-m 4.5 b-d +1 pale husk, no flags
FMX 412 FM 72 164 fg 69 fg 4.7 a-c 4.3 a-c Y 18.3 i-o 4.0 g-i -2 medium flags, slightly immature
FMX 402 FM 72 155 g 65 g 5.0 a 5.0 a B 19.2 e-i 4.1 f-h -1 long flags, non-uniform maturity
FMX 402 FM 72 155 g 65 g 5.0 a 5.0 a B 19.2 e-i 4.1 f-h -1 long flags, non-unifom atry


WMean separation in columns by Duncan's Multiple Range Test, 0.05 level General Linear Models Procedure.
significantly different.


Means followed by the same letter are not


YYield expressed as 42 lb crates/acre.

xHusk cover: 1=ear protrudes from husk; 5=ear tightly wrapped and completely covered.

"Tip fill, 0 = at least 1" of unfilled kernels at the ear tip; 5 = full at tip.

'Kernel color: B = bicolor; W = white, Y = yellow.

"Ear length/diam. (cm): measurements on husked ears, an average value of a 10-ear sample/replication.

tMaturity: 0 = harvested at optimal maturity, (+) or (-) indicates over mature or under mature, respectively, followed by the number of days.


T -.__


Cont'd.







Table 2. Temperature and rainfall at CFREC-Sanford (30 miles
east of Zellwood) during the spring 1996 sweet corn
season (March 19 June 4).

Daily temperature (F) Rainfall
Month Maximum Minimum (in)

March 19-31 86 38 5.45

April 1-30 91 41 1.86

May 1-31 94 59 4.22

June 1-9 87 60 0.34
Total 11.87




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