Group Title: Mimeo report - University of Florida Everglades Experiment Station ; 59- 21
Title: Preliminary results of an experiment being conducted to develop a technique to test bolting characteristics of celery varieties and breeding lines and to eliminate easy bolting plants in segregation populations
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Permanent Link: http://ufdc.ufl.edu/UF00067551/00001
 Material Information
Title: Preliminary results of an experiment being conducted to develop a technique to test bolting characteristics of celery varieties and breeding lines and to eliminate easy bolting plants in segregation populations
Series Title: Everglades Station Mimeo Report
Physical Description: 2 leaves : ; 29 cm.
Language: English
Creator: Wolf, Emil A
Everglades Experiment Station
Publisher: Everglades Experiment Station
Place of Publication: Belle Glade Fla
Publication Date: 1959
 Subjects
Subject: Celery -- Varieties -- Florida   ( lcsh )
Genre: non-fiction   ( marcgt )
 Notes
Statement of Responsibility: Emil A. Wolf.
General Note: "May 6, 1959."
 Record Information
Bibliographic ID: UF00067551
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 65220976

Full Text


'verglades Station Mimeo Report 59-21


PRELIMINARY RESULTS OF AN EXPERIMENT BEING CONDUCTED TO DEVELOP A TECHNIQUE
TO TEST BOLTING CHARACTERISTICS OF CELERY VARIETIES AND BREEDING LINES AND
TO ELIMINATE EASY BOLTING PLANTS IN SEGREGATION POPULATIONS.

Emil A. Wolf


Two varieties of celery, Utah 52-70 and.259-19 Summer Pascal one an easy
bolting variety, the other a slow bolting variety were exposed to continuous
00OF temperature at 7, 9, and 11 weeks of age for 2, 3, 4, and 5 week periods of
time. Plants were grown at temperatures above 70OF before being given cold treat-
sent and at 650F after cold treatment. All treated plants and checks were trans-
planted to the field on January 19, 1959. Counts of seedstalks have been made
at weekly intervals commencing 85 days after transplanting.


Table 1. Average % seedetema in Utah 52-70 variety 99 days after transplanting
age.


Duration of 400 treatment P1'nt -Age (weeks)
(days) 7 9 1 Ave.

0 (check) 0 0 0
14 39 56 29 41
21 43 50 47 47
28 39 59 60 53
35 31 57 56 48
Ave. (excluding check) 38 53 6


Table 2. Percent of Utah 52-70 plants showing seedstem when exposed to from
2 to 5 weeks of 40oF temperature at three different ages.

Age of Plant when exposed Days from transplanting
(weeks) 85 92 99 Ave.

7 16 32 38 29
9 23 50 55 43
11 14 46 48 36
Ave. iz l3 7T


Table 3. Percent of Utah 52-70 plants showing seedstems when exposed to 2 to 5
weeks cold exposure at 7 to 9 weeks of age.


Duration of 40oF treatment Days from transplanting
(days) 85 92 99 Ave.
L(! 8 512 L II J' ] l- ...... ..


0
14
21
28
35
Ave. not including check


"" I-~- --~~-- ---' ------- ~-~-~ -~-- c~-~ -- ~-


May 6, 1959










This experiment may be observed in the field immediately east of the orange
grove east of the houses.

At the time the above data was summarized, there was no definite seed stalk
development in the 259-19 variety.

Discussion: Exposure of 9 and 11 week old Utah 52-70 plants to 28 days of con-
tinuous 40F temperature has given the highest percent of seeders. It appears
that the exceptionally high temperature in February and April (mean monthly
temperatures of 71 and 74 versus 35 year averages of 64 and 71, respectively)
has partially nullified the effects of the cold treatment and that we will not
obtain the complete bolting we obtained in the same variety in a similar experi-
ment last winter in which 75% of the checks bolted. From Table 1, increasing
the duration of the cold treatment would not have given any greater bolting.



































EES 59-21
250 copies Belle Glade, Florida




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