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Title: Celery yield and bolting test results with 9 advanced generation EREC early blight resistant, slow bolting liens [sic] and commercial cultivar checks
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Permanent Link: http://ufdc.ufl.edu/UF00076896/00001
 Material Information
Title: Celery yield and bolting test results with 9 advanced generation EREC early blight resistant, slow bolting liens sic and commercial cultivar checks
Series Title: Celery yield and bolting test results with 9 advanced generation EREC early blight resistant, slow bolting liens sic and commercial cultivar checks
Physical Description: Serial
Language: English
Creator: Wolf, Emil A.
Publisher: Everglades Research and Education Center.
Place of Publication: Belle Glade, Fla.
Publication Date: 1990
 Record Information
Bibliographic ID: UF00076896
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 166140919

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EV-1990-5 July 1990


Celery yield and bolting test results with 9 advanced generation
EREC early blight resistant, slow-bolting liens and commercial
cultivar checks harvested spring 1990, Belle Glade area.


Emil A. Wolf, IFAS, University of Florida,
Everglades Research and Education Center, Belle Glade

The writer wishes to thank A. Dud &-Sons,-Incn-and D.D.
Properties, Belle Glade for growing an assist gg <,nenpllection of
data reported herein. Library


SEP 18 1990
INTRODUCTION
UI L'i rsty of Florida
One of the objectives of the celery-braedingrprgra -aL the
Everglades Research and Education Center for a number of years has
been the development of a slow bolting, early blight resistant
cultivar or cultivars for harvest during the April and early May
bolting season. Prior to release of Florida Slobolt (M68-29-5M) in
1983 and its extensive planting for harvest during this potential
bolting period, heavy yield losses sometimes occurred as a result of
prolonged periods of low temperatures. Breeding work has continued to
develop a cultivar/s superior to Florida Slobolt in slower bolting
and/or other desired horticultural characteristics.

During the 1989-90 growing season, 9 advanced generation early
blight resistant slow-bolting lines and mass seed increases of two of
these lines -- 85-309 designated as 85-309M and 87-203 designated as
87-203M -- were evaluated in 2 yield trials and 2 bolting tests.

EXPERIMENTAL METHODS
Seed was planted on outdoor raised beds on Oct. 13, 1989. To
provide uniform size and age plants, the seedlings were transplanted
one and a three quarters inches apart on the bed and into soil
containing flats when they had their first true leaves and developing
the second. Plants were topped one to two times weekly to develop
root systems.

Yield tests were transplanted into the field on February 9 and
10, 1990 in randomized complete blocks designs with 6 replications.
Fifteen foot lengths of each plot were harvested for yield and
horticultural evaluation. The first trial transplanted on Feb. 9 was
harvested on April 3 and the Feb. 10 trial on April 11. Plants in
both trials were harvested at optimum maturity. Tables 1 and 2.

Flats containing plants for the two bolting tests were placed in
a cold room with 450F temperature and light on Jan. 8, 1990. On Feb.






1, 3 replications of 25 plants each were removed from the
vernalization chamber and transplanted to the field in a randomized
complete blocks design. On Feb. 8 the flats were removed from the
chamber and held outdoors until Feb. 12 when 3 replications of 25
plants each were transplanted into the field in a randomized complete
blocks design. The plants receiving 24 days vernalization were
harvested on May 6 and those receiving 31 days were harvested on May
12. Tables 3 and 4. Plants in the trial receiving 24 days
vernalization were 5 days to one week over mature. Plants in the
trial with 31 days vernalization were at optimum maturity.

RESULTS AND DISCUSSION
There were no significant differences in yields in crates per
acre in the Feb. 9 test but there were some differences on a weight
basis as a result of differences in number, length, and width of
petioles. Table 1. There were significant differences in both weight
and crates per acre in the Feb. 10 trial. Table 2. None of the lines
tested were superior to Florida Slobolt on the basis of yield in
crates per acre in either of the two tests. Pith and brown stem
occurred in only a few plants, insufficient to determine any
differences in either trial.

Good premature seeding occurred in the two bolting tests. Fifty-
eight and 75 percent of the 683 plants were culled for seedstem
formation in the 24 and 31 day cold treatments respectively. Tables 3
and 4. None of the breeding lines were superior to Florida Slobolt in
yield, though five in the second trial receiving 31 days cold
treatment showed a trend toward higher yields. Only 87:353 and Slow
Bolting Green #12 were free of any seedstem initiation in both trials.
Petioles of the later are too long, slender and pale to be acceptable.
Though not significantly different in these two tests, petioles of
87:353 tend to be slightly shorter than June Belle, and significantly
shorter than Florida Slobolt. Plants of the mass increases of 85-309
and 87-203 lines were similar to their parent lines.





Table 1. Comparison of marketable yields and plant charact<
resistant slow-bolting advanced breeding lines wil
the field February 9, 1990, Belle Glade area.


Marketable yieldz


Entry Pedigree (cwt/A) (crts/A


88:234 M68-29-A2-76-12 725 a 1220
88:354 M68-29-A2-69-77-10 700 ab 1205
*June Belle EREC 1622 700 ab 1205
85:309 M68-29-A2-51-4-2 700 ab 1185
85:256M M68-29-6-5-7M 695 ab 1200
-----------------------------------------------------
*Florida Slobolt M68-29-5M 695 ab 1185
88:236 M68-29-A2-76-18 690 b 1265
87:351 M68-29-A2-69-77-4 690 a-c 1185
87:203 259-19-SP (81-205-4) 685 a-c 1255
87:203M 87:203 mass increase 670 a-c 1185
---------------------------------------------------
87:330 M68-29-A2-69-5-6 650 bc 1160
85:309M 85:309 mass increase 645 bc 1175
87:353 M68-29-A2-69-77-8 615 c 1180


zMean separation by Duncan's Multiple Range Test, 5% level.i
significantly different. Crates based on grade size count

YPetioles cut by topping at 14".

xAverage length of outer petioles from 10 marketable plants

"Average width of outer petioles from 10 marketable plants
node.

*Standard checks.

Comments: Single row plots 15 ft. long, 24 in. between ro,
harvested April 3, 1990. Excellent quality celery.





Table 2. Comparison of marketable yields and plant characteristics of 9 E.R.E.C. early blight
resistant slow-bolting advanced breeding lines with 2 commercial cultivars transplanted to
the field February 10, 1990, Belle Glade area.


Marketable yield Petiole Characteristics
Lengthy Widthx
Entry Pedigree (cwt/A) (crts/A) (in.) (in.)


85:256M M68-29-6-5-7M 655 a 1265 a 9.6 ab 0.82 a
85:309 M68-29-A2-51-4-2 630 ab 1200 a 9.2 bc 0.86 a
87:351 M68-29-A2-69-77-4 620 a-c 1180 a 9.1 b-d 0.81 ab
88:354 M68-29-A2-69-77-10 585 a-c 1160 a 9.1 b-d 0.83 a
87:203 259-19-SP(81-205-4) 575 bc 1175 a 8.6 de 0.85 a

88:234 M68-29-A2-76-12 575 bc 1165 a 8.3 e 0.85 a
*June Belle EREC 1622 565 bc 1185 a 9.4 bc 0.81 ab
*Florida Slobolt M68-29-5M 565 bc 1155 a 10.0 a 0.85 a
88:236 M68-29-A2-76-18 565 bc 1125 ab 8.5 e 0.82 ab
85:309M 85:309 mass increase 560 bc 1125 ab 9.2 bc 0.84 a

87:203M 87:203 mass increase 560 bc 1155 a 8.4 e 0.81 ab
87:330 M68-29-A2-69-5-6 540 de 1130 ab 9.1 b-d 0.84 a
87:353 M68-29-A2-69-77-8 485 d 1010 b 8.8 c-e 0.74 b


zMean separation by Duncan's Multiple Range Test, 5% level. Means having same letter are not
significantly different. Crates based on grade size counts.
YAverage length of outer petioles from 10 marketable plants from base to first node.

XAverage width of outer petioles from 10 marketable plants at mid-point between base and
first node.

*Standard checks.

Comments: Single row plots 15' long, 24 in. between rows, and 7.5 inches between plants, harvested
April 11, 1990. Excellent quality celery.





Table 3. Comparison of marketable yields, percent bolting, and petiole characteristics of 9 EREC slow-bolting, early
blight resistant advanced breeding lines with 7 commercial cultivars vernalized at 450F for 24 days before
field transplanting, February 1, 1990, Belle Glade area.


Breeding Line Pedigree Marketable % Plants % Plants Total % Petiole Characteristics
or Yield culled for bolting but Plants Length' Widthu
Cultivars Crates/Az boltingY grading bolting" (in.) (in.)


M68-29-A2-76-12 1265 a
M68-29-A2-69-77-8 1245 a
M68-29-A2-69-77-4 1235 a
M68-29-6-5-7M 1230 a
M68-29-A2-69-77-10 1225 a
85:309 mass increase 1210 ab


87:203 259-19 SP (81-205-4) 1205 ab
87:330 M68-29-A2-69-5-6 1200 ab
87:203M 87:203 mass increase 1200 ab
88:236 M68-29-A2-76-18 1165 ab
*Florida Slobolt M68-29-5M 1155 a-c
Slowbolt Green #12 1155 a-c


Florimart 19
85:309
Napoleon
Florida 2-14
*June Belle
Florida 683


Keystone
M68-29-A2-51-4-2
Neuman Seed Co.
Fla. Celery Exc.
EREC 1622
Fla. Celery Exc.


1115 a-c
1070 a-c
1040 a-c
935 bc
885 c
435 d


0 c
0 c
0 c
0 c
O c
0 C
0 c

2 c
0 c
0 c
0 c
0 c
0 c


3 c
0 c
0 c
23 b
25 b
58 a


1.7 cd
0 d
0.3 d
1.3 d
0.3 d
0 d

2.0 cd
0 d
0.3 d
0.3 cd
2.3 cd
0

1.0 d
1.0 d
0.7 cd
5.0 b
8.0 ab
8.7 a


8 c
0 c
2 c
5 c
2 c
0 c


2 c
0 c
0 c
0 c
10 c
0 c

8 c
5 c
3 c
62 ab
60 b
78 a


8.9 e-g
9.3 d-g
9.7 b-e
10.5 ab
9.0 e-g
9.7 b-c

8.4 fg
8.7 fg
8.5 fg
9.6 c-e
10.4 a-c
8.5 f-g

10.3 a-c
9.9 b-d
8.4 g
10.8 a
9.9 b-d
9.4 d-f


0.84
0.72
0.83
0.80
0.79
0.81

0.79
0.74
0.77
0.78
0.77
0.64


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

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


0.74 b-e
0.77 a-d
0.68 de
0.71 c-e
0.73 b-e
0.64 e


zBased on counts of different grade sizes. Mean separation by Duncan's Multiple Range Test, 5% level. Means having
same letter are not significantly different. When more than 2 letters follow a mean, a dash indicates letters between.
YSeedstem height more than 2 times diameter of the plant at the base.
xSeedstems visible but plants grading.
"Includes bolters culled, those bolting but grading, plus those showing seedstem initiation when split longitudinally.
VAverage length of outer petioles from 10 marketable plants from base to first node.
uAverage width of outer petioles from 10 marketable plants at mid point between base and first node.
*Check cultivars.
Comments: Seeded Oct. 13,1989. Plots 15 feet long with plants 7.8 in. apart in 24 in. rows, transplanted Feb. 1 and
harvested May 6, 1990. Soil Pahokee Muck. Excellent quality celery.


88:234
87:353
87:351
85:256M
87:354
85:309M




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