Group Title: Research report - Ft. Pierce Agricultural Research and Education Center ; RL-1975-4
Title: An evaluation of pepper breeding lines no. 136 and 211
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Full Citation
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Permanent Link: http://ufdc.ufl.edu/UF00055983/00001
 Material Information
Title: An evaluation of pepper breeding lines no. 136 and 211
Series Title: Ft. Pierce ARC research report
Physical Description: 3, 1 p. : ; 28 cm.
Language: English
Creator: Ozaki, H. Y ( Henry Yoshio ), 1923-
Cook, Allyn Austin
University of Florida -- Agricultural Research Center
Publisher: University of Florida, Institute of Food and Agricultural Sciences, Agricultural Research Center
Place of Publication: Fort Pierce Fla
Publication Date: [1975]
 Subjects
Subject: Peppers -- Diseases and pests -- Florida   ( lcsh )
Peppers -- Varieties -- Florida   ( lcsh )
Genre: bibliography   ( marcgt )
non-fiction   ( marcgt )
 Notes
Statement of Responsibility: H.Y. Ozaki, A.A. Cook.
General Note: Caption title.
General Note: "April 1975."
 Record Information
Bibliographic ID: UF00055983
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 67291274

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used only to trace the historic work of
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Copyright 2005, Board of Trustees, University
of Florida






Ft. Pierce ARC Research Report RL-1975-4


AN EVALUATION OF PEPPER BREEDING LINES NO 13

H. Y. Ozaki /
University of Florida / P
Institute of Food and Agriculturai Sciences 219
Agricultural Research Cen1f' o
Fort Pierce, Florida .'{ /

A. A. Cook Of a
University of Florida
Institute of Food and Agricultural Sciences
Plant Pathology Department
Gainesville, Florida

Potato Y, tobacco etcl, and pepper mottle viruses are three destructive diseases
of peppers grown on the lower east coast of Florida. Crop losses sometimes amount
to several millions of dollars.

The purpose of this study was to evaluate breeding lines developed by the
junior author for tolerance to viruses. Lines 136 and 211 tolerate certain potato
Y and tobacco etch virus strains. The test was conducted at the ARC (Ft. Pierce)
Morikami Farm, located at Delray Beach.

Experimental Methods

The trial was sown in early fall to mature pods before the winter pepper mottle
virus infection. Breeding lines 136 and 211 were compared to Early Calwonder and
Avelar. The seeds were planted on October 9, 1973 in 2-inch by 2-inch plastic pot
trays filled with 1:1 peat moss and vermiculite plus nutrients. Two plants were
grown in each pot. Approximately 1900 pounds of dolomite and 900 pounds of high
calcic limestone per acre were broadcast and rototilled prior to bedding of the
Pompano fine sand which contained approximately 700 pounds CaO and 125 pounds MgO
per acre before liming. The water table was maintained approximately 18 inches
below the bed top. Each plot, 0.0005 acre consisted of a 3.5 foot long bed segment.
Two rows of peppers, 18 inches apart, were transplanted October 25, on 6 foot wide
beds. Twelve single plants per plot were spaced 7 inches in the row in four rep-
lications.

Approximately 300 pounds each of N and K20 and 150 pounds of P205 per acre
were applied as follows: 300 pounds of 10-26-10 with 0.8 CuO-1.2 MnO-0.8 ZnO-0.4
B 0 -0.8 Fe203-4.0 MgO fertilizer per acre were broadcast and rototilled prior to
bedding. Another 300 pounds per acre application was banded on top of the bed
between the two pepper rows along with 600 pounds each KIO3 and NH4NO3 prior to
plastic mulch laying.

Vorlex was applied with a hand gun at 15-20 gpa prior to mulching. Mole cricket
bait containing chlordane and toxaphene was scattered over the plant holes. Copper
and maneb were sprayed alternately at 3-4 day intervals for disease control. Lannate
was added for insect control.

Results and Discussion

The growing season was warm and wet. The daily maximum temperatures ranged
mostly between 75 and 85 degrees F. In mid-November and early December the daily








minimum temperature dropped to 36 to 40 degrees for 3 days. Most of the daily mini-
mum temperatures ranged between 60 to 70 degrees.

Heavy rains fell during the growing season. Rains between 2.0 and 2.8 inches
per 24 hour period fell in November andDecember. A 9 inch rain fell on January 13,
and a 3.6 inch rain fell on January 14. Plants were showing water injury when the
two harvests were made in late January.

There were no significant yield differences for the large podded varieties
(Table 1). Line 136 produced the best yields of quality pods. Tables 2-4 contain
summary data for physical measurements and visual ratings.

Summary


Pepper breeding line 136 produced the best quality pods
injured by rains falling shortly after the maturity of early
equalled that produced by Early Calwonder.


in a trial
set pods.


RL-1975-4 -300 copies


that was
Its yield




-3-


Table 1. Pounds of pepper pods per 7 foot


1/
row-


U.S. Fancy Total
Breeding line U.S. Fancy plus U.S. 1 (including culls)
2/
2. 136 3.8 a-8 7.5 a 8.6 a
8. 211 : 3.2 a 7.0 a 8.8 a
19. Early Calwonder 3.9 a 6.6 a 6.8 ab
20. Avelar 0.0 b 0.4 b 5.4 b


1/ For bushels per acre, multiply plot yield by 70.

2/ Numbers followed by same letter are not significantly different from each
other at the 5% level.



Table 2. Number of times- pepper pods rated for good quality.

i 2/
Entry Quality rating-2

9 8.5 8
2. 136 1 2 2
8. 211 0 0 5
19. Early Calwonder 0 0 5
20. Avelar 0 0 0


S8 is highest possible number for each quality rating.

- 10 is highest possible for quality rating. !



Table 3. Average U.S. Fancy pepper pod weight from 1st harvest.

Line Average pod weight,. lb.

136 0.372
211 0.326
Early Calwonder 0.335
Avelar 0






Table 4. Pepper pod characteristics.


Size Shape no. of times rated:
Length Std. Diameter Std. Elongated Blocky but.
I/ 11
Line mm1 dev. (mm)- mm dev. Blocky blocky end pointed Pointed

136 89.79 9.71 71.50 6.25 3 1
211 95.50 11.31 71.04 4.75 1 3 1
Early Calwonder 93.82 11.72 62.92 12.03 1 3 1
Avelar 90.64 9.32 47.50 6.28 2


/ 25mm = approximately 1 inch.
2/
- Smaller deviation indicates more uniform pods.

Table 4 (cont'd)


Pod color No. of cells,% Wall
Line Green Red Lt. red Yellow 2 3 4 5 thickness (mm at mid-section)

136 X X :: X 30 70 5.8
211 X X X X 42 58 5.2
Early Calwonder X X X X 54 46 5.0
Avelar X X X 5 55 40 3.3


Table 4 (cont'd)
Green pod no. times rated Red pod no. times rated
Taste Taste
Line Flat Good Slightly sweet Flat Good Slightly sweet
136 4 2 1 3 2
211 4 2 3
Early Calwonder 6 5S
Avelar 3 '1 3 1
i '




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