NCSU Cucumber Breeding Report - 2007
Todd C. Wehner
Professor
Tammy L. Ellington
Agric. Res. Tech. III
Department of Horticultural Science
North Carolina State University
Raleigh, NC 27695-7609
Summer (Stage 4) Slicing Cucumber Trial
2007
Todd C. Wehner and Tammy L. Ellington
Experiment Design
1. A randomized complete block with 3 replications of slicer cultivars and
breeding lines (collectively referred to as cultigens) was grown.
2. Plots were single 20 ft. rows with 5 ft. alleys at each end.
3. Rows were on raised 18" beds spaced 60" apart (center to center).
4. Fertilizer consisted of 80-80-80 lb/A (N-P-K) broadcast preplant
and 30-0-0 lb/A (N-P-K) sideplaced at the 2 to 4 leaf stage.
5. Curbit was applied preemergence at the rate of 1 lb. a.i./A.
6. The trial was planted 9 July, and harvested 4 times
(Mondays and Thursdays) between 20 August and 7 September.
Data Collection
1. Fruit were weighed after sorting into No.1, No.2 and cull
(nubs and crooks) grades according to U.S.D.A. standards.
2. Fruit length, diameter and weight were recorded for 3 fruit per plot.
3. Quality ratings were from 1 to 9, with 1 = worst, 9 = best.
4. Disease ratings were from 0 to 9, with 0 = no disease, 1-2 = trace,
3-4 = slight, 5-6 = moderate, 7-8 = severe, 9 = plant dead.
Results
The following cultigens performed well, and could be advanced
to the next stage:
01 G83xNC-59 NCStateUniv
02 PX147-10896 Seminis
03 G83xNC-63 NCStateUniv
04 G83xNC-62 NCStateUniv
05 G83xNC-58 NCStateUniv
06 WSA-9119 WesternSeed
Table 27. Stage 4 summer slicer trial - yield data (cultigens ranked by
cwt/A of Fancy + No. 1 grade fruit).
_________________________________________________________________________________
Yield(cwt/A) Percent Plants
Cultivar Seed Fancy Market- fancy Percent per A
Rank or line source +No.1 able +No.1 culls (x1000)
_________________________________________________________________________________
1 G83xNC-59 NCStateUniv 67 137 31 31 26
2 WSA-9119 WesternSeed 35 72 33 32 26
3 PX147-10896 Seminis 35 79 25 37 26
4 G83xNC-62 NCStateUniv 34 60 34 41 25
5 G83xNC-63 NCStateUniv 34 63 34 37 25
6 G83xNC-58 NCStateUniv 32 65 28 43 26
7 Cherokee 87 Check 32 61 24 53 26
8 General Lee HarrisMoran 31 67 27 38 26
9 Dasher II Seminis 26 48 29 45 26
10 NC-Sunshine NCStateUniv 26 60 22 47 26
11 Ashley Check 17 29 32 16 8
12 NC-Stratford NCStateUniv 17 44 18 54 26
13 WSA-8119 WesternSeed 17 32 28 44 26
14 PX147-10885 Seminis 16 37 27 34 23
15 Panther Nunhems 13 35 23 38 26
16 G57xNC-59 NCStateUniv 5 13 5 18 9
17 G57xNC-63 NCStateUniv 4 15 4 19 9
18 G57xNC-58 NCStateUniv 1 3 2 29 9
_________________________________________________________________________________
CV (%) 91 72 57 46 29
Mean 25 51 24 36 22
LSD (5%) 37 61 23 28 10
_________________________________________________________________________________
Correlation (Marketable yield with % culls) = 0.02ns
Table 28. Stage 4 summer slicer trial - earliness data (cultigens ranked by
weight of Fancy + No.1 grade fruit in harvests 1 and 2).
_________________________________________________________________________________
Cumulative fruit weight and % of
total weight (6 harvests) for harvest:
Cultivar Seed 1 1-2 1-3 1-4 1-5
Rank or line source Wt. % Wt. % Wt. % Wt. % Wt. %
_________________________________________________________________________________
1 NC-Sunshine NCStateUniv 6 5 21 32 38 60 46 76 53 93
2 G83xNC-62 NCStateUniv 0 0 20 39 36 64 45 77 56 93
3 PX147-10896 Seminis 0 0 19 33 46 60 54 68 68 89
4 G83xNC-58 NCStateUniv 0 0 9 10 30 34 43 62 53 88
5 G83xNC-63 NCStateUniv 2 2 8 13 17 25 33 49 55 88
6 NC-Stratford NCStateUniv 2 4 6 15 18 40 31 72 41 94
7 G83xNC-59 NCStateUniv 1 0 6 3 37 19 76 47 121 85
8 G57xNC-59 NCStateUniv 0 0 6 14 10 26 11 28 13 33
9 PX147-10885 Seminis 2 4 4 9 7 14 16 37 31 84
10 WSA-9119 WesternSeed 1 1 4 5 22 22 39 52 60 83
11 General Lee HarrisMoran 0 0 3 6 23 38 38 56 55 81
12 Cherokee 87 Check 1 1 3 4 10 17 30 47 52 85
13 Dasher II Seminis 0 0 3 7 10 21 27 55 39 81
14 G57xNC-58 NCStateUniv 1 14 2 18 3 26 3 26 3 29
15 WSA-8119 WesternSeed 0 0 2 4 2 5 5 14 23 74
16 G57xNC-63 NCStateUniv 0 0 1 3 7 15 8 18 10 23
17 Panther Nunhems 0 0 1 3 2 7 11 34 21 67
18 Ashley Check 0 0 0 0 1 2 6 14 21 49
_________________________________________________________________________________
CV (%) 329 371 120 126 106 79 91 53 73 34
Mean 1 2 6 12 18 28 29 46 43 73
LSD (5%) 5 11 13 25 31 36 44 41 52 41
_________________________________________________________________________________
Correlation (Marketable yield with yield in harvests 1-2) = 0.36**
Correlation (Marketable yield with % of yield in harvests 1-2) = 0.04ns
Table 29. Stage 4 summer slicer trial - fruit quality data (cultigens ranked
by average quality).z
_________________________________________________________________________________
Cultivar Seed Average Seed- Overall
Rank or line source quality Shape Color cell impression
_________________________________________________________________________________
1 PX147-10896 Seminis 7.2 8 8 7 7
2 G83xNC-58 NCStateUniv 6.9 7 8 7 7
3 Dasher II Seminis 6.8 6 7 8 6
4 NC-Stratford NCStateUniv 6.8 6 7 8 6
5 G83xNC-59 NCStateUniv 6.7 6 7 7 7
6 G83xNC-63 NCStateUniv 6.6 6 8 7 6
7 NC-Sunshine NCStateUniv 6.6 6 8 8 6
8 WSA-9119 WesternSeed 6.6 6 8 7 6
9 G83xNC-62 NCStateUniv 6.4 6 9 7 6
10 PX147-10885 Seminis 6.4 6 9 7 6
11 General Lee HarrisMoran 6.2 6 7 7 6
12 Ashley Check 6.0 6 4 7 5
13 WSA-8119 WesternSeed 6.0 5 7 8 5
14 Panther Nunhems 5.9 5 6 8 4
15 G57xNC-58 NCStateUniv 5.6 5 9 7 5
16 Cherokee 87 Check 5.4 5 6 6 5
17 G57xNC-63 NCStateUniv 5.3 5 6 6 4
18 G57xNC-59 NCStateUniv 4.8 4 6 6 4
_________________________________________________________________________________
CV (%) 9.8 16 12 11 16
Mean 6.2 6 7 7 6
LSD (5%) 1.0 2 2 1 2
_________________________________________________________________________________
z Quality rated 1 to 9 (1 = poor, 5 = average, 9 = excellent;
except color where 1 = white, 5 = medium green, 9 = very dark green).
Correlation (Marketable yield with average quality) = 0.30*
Table 30. Stage 4 summer slicer trial - fruit dimensions and comments
(cultigens ranked by average quality rating).z
_________________________________________________________________________________
Cultivar Seed Length Diameter Wt. Defect1° Defect2°
Rank or line source (inch) (inch) (lb.) 2 4 6 2 4 6
_________________________________________________________________________________
1 PX147-10896 Seminis 7.3 2.0 0.58 A K H T T T
2 G83xNC-58 NCStateUniv 7.5 1.9 0.60 K K K T T T
3 Dasher II Seminis 6.7 1.8 0.44 C H H H T T
4 NC-Stratford NCStateUniv 6.9 1.9 0.52 D D H H H T
5 G83xNC-59 NCStateUniv 7.3 2.0 0.65 M D K T H H
6 G83xNC-63 NCStateUniv 7.0 1.9 0.55 D H K H T T
7 NC-Sunshine NCStateUniv 7.0 1.9 0.57 A D D K H H
8 WSA-9119 WesternSeed 7.4 1.8 0.53 D K G T T T
9 G83xNC-62 NCStateUniv 7.6 1.9 0.57 D K K K T T
10 PX147-10885 Seminis 6.7 2.0 0.38 D C G T T T
11 General Lee HarrisMoran 7.3 1.8 0.49 D H K T T T
12 Ashley Check 7.3 1.8 0.55 M M M H H H
13 WSA-8119 WesternSeed 6.6 1.5 0.33 D D T H T D
14 Panther Nunhems 6.5 1.7 0.37 D D H H H T
15 G57xNC-58 NCStateUniv 6.6 1.9 0.47 D D D H H H
16 Cherokee 87 Check 6.7 1.9 0.51 M D M D M T
17 G57xNC-63 NCStateUniv 6.0 1.8 0.35 H D D T H H
18 G57xNC-59 NCStateUniv 6.5 1.9 0.51 D M M H D D
_________________________________________________________________________________
CV (%) 6.1 10.3 13.99
Mean 6.9 1.8 0.50
LSD (5%) 0.7 0.3 0.12
_________________________________________________________________________________
z Defects were rated as follows (giving primary and secondary for each harvest):
A - wArty fruit J – RiDGed S - Separated carpels
B - Blossom end defects K - Keep(excellent) T - Tapered ends
C - Crooks excessive L - Late maturity U - Uniform green
D - Dogbone shape M - Mottled fruit V - Varicolor (dark stem
E - Early maturity N - Nubs excessive end, light blossom end)
F - Four celled O - Offtype fruit W - White fruit
G - lonG fruit P - Placental hollows X - neCKS on fruit
H - sHort fruit Q - Y - Yellow fruit
I - strIped fruit R - Reject (poor) Z - diSeased fruit
Table 31. Stage 4 summer slicer trial - sex expression and vine data
(cultigens ranked by gynoecious rating).
_________________________________________________________________________________
Early Earli-
Cultivar Seed Gyn. yield ness Vine Vine
Rank or line source ratingz (cwt/A) (%)x sizew colorw
_________________________________________________________________________________
1 G57xNC-63 NCStateUniv 9 1 3 7 7
2 PX147-10885 Seminis 8 4 9 8 8
3 PX147-10896 Seminis 8 19 33 8 7
4 G57xNC-59 NCStateUniv 8 6 14 7 6
5 G57xNC-58 NCStateUniv 8 2 18 5 7
6 WSA-8119 WesternSeed 7 2 4 8 8
7 G83xNC-62 NCStateUniv 7 20 39 7 6
8 Cherokee 87 Check 6 3 4 6 7
9 G83xNC-63 NCStateUniv 6 8 13 6 6
10 NC-Sunshine NCStateUniv 6 21 32 5 5
11 Dasher II Seminis 6 3 7 8 7
12 Panther Nunhems 6 1 3 6 8
13 General Lee HarrisMoran 5 3 6 8 8
14 G83xNC-59 NCStateUniv 5 6 3 7 5
15 G83xNC-58 NCStateUniv 5 9 10 7 6
16 NC-Stratford NCStateUniv 5 6 15 6 5
17 WSA-9119 WesternSeed 5 4 5 7 8
18 Ashley Check 4 0 0 6 7
_________________________________________________________________________________
CV (%) 17 120 126 14 15
Mean 6 6 12 7 7
LSD (5%) 2 13 25 2 2
_________________________________________________________________________________
z Gynoecious rating (1 = androecious, 2-3 = andromonoecious, 4-6 = monoecious,
7-8 = predominately gynoecious, 9 = gynoecious).
y Early yield is weight of Fancy+No.1 grade fruit produced in harvests 1 and 2.
x Earliness is the percent of the yield (Fancy + No.1 grade fruit) of 6 harvests
that was produced in harvests 1 and 2.
w Vine size & color are rated 1 (small or yellow green) to 9 (large or
dark green).
Correlation (Marketable yield with gynoecious rating) = -0.32*
Table 32. Stage 4 summer slicer trial - disease ratings (cultigens ranked
by average disease resistance).z
_________________________________________________________________________________
Cultivar Seed Downy
Rank or line source mildew
_________________________________________________________________________________
1 G83xNC-63 NCStateUniv 1.0
2 WSA-8119 WesternSeed 1.3
3 Cherokee 87 Check 1.7
4 Dasher II Seminis 1.7
5 Ashley Check 1.7
6 G57xNC-63 NCStateUniv 2.0
7 Panther Nunhems 2.0
8 WSA-9119 WesternSeed 2.0
9 PX147-10885 Seminis 2.7
10 General Lee HarrisMoran 2.7
11 G83xNC-59 NCStateUniv 2.7
12 G83xNC-58 NCStateUniv 2.7
13 PX147-10896 Seminis 3.0
14 G83xNC-62 NCStateUniv 3.3
15 NC-Stratford NCStateUniv 3.3
16 NC-Sunshine NCStateUniv 5.0
17 G57xNC-59 NCStateUniv 6.0
18 G57xNC-58 NCStateUniv 7.0
_________________________________________________________________________________
CV (%) 38.9
Mean 2.9
LSD (5%) 1.9
_________________________________________________________________________________
z Disease rated 0 to 9 (0=none, 1-2=trace, 3-4=slight, 5-6=moderate, 7-8=advanced,
9=plant dead).
Correlation (Marketable yield with disease rating) = -0.17ns
Table 33. Stage 4 summer slicer trial - selection indexes (cultigens ranked
by SWI1).z
_________________________________________________________________________________
Simple weighted Average rank
Cultivar Seed indexes indexes___
Rank or line source SWI1 SWI2 ARI1 ARI2
_________________________________________________________________________________
1 G83xNC-59 NCStateUniv 4.4 4.0 7.8 7.7
2 PX147-10896 Seminis 4.4 4.2 5.9 6.1
3 G83xNC-63 NCStateUniv 4.2 3.9 6.5 6.2
4 G83xNC-62 NCStateUniv 4.0 4.0 7.9 7.7
5 G83xNC-58 NCStateUniv 4.0 3.7 7.7 8.2
6 WSA-9119 WesternSeed 4.0 3.6 8.3 8.6
7 Dasher II Seminis 3.9 3.5 7.1 7.3
8 General Lee HarrisMoran 3.7 3.4 9.6 9.1
9 NC-Sunshine NCStateUniv 3.7 3.6 8.8 9.0
10 PX147-10885 Seminis 3.6 3.3 9.2 9.4
11 WSA-8119 WesternSeed 3.6 3.2 9.6 9.8
12 NC-Stratford NCStateUniv 3.6 3.4 7.9 8.2
13 Cherokee 87 Check 3.6 3.2 10.6 9.8
14 Ashley Check 3.4 3.0 11.0 11.2
15 Panther Nunhems 3.4 3.0 11.1 11.0
16 G57xNC-63 NCStateUniv 3.1 2.7 12.8 12.4
17 G57xNC-58 NCStateUniv 2.4 2.4 14.1 14.4
18 G57xNC-59 NCStateUniv 2.4 2.3 15.3 14.9
_________________________________________________________________________________
CV (%) 12.4 13.8 21.8 22.5
Mean 3.6 3.3 9.5 9.5
LSD (5%) 0.7 0.8 3.4 3.5
_________________________________________________________________________________
z SWI is simple weighted index calculated from the performance of a cultigen for
yield; earliness; fruit shape, seedcell size and overall impression; and disease
resistance. The index is calculated with 2 different methods of weighting each
trait (10 is best, 1 is worst).
ARI is the average ranking of each cultigen for yield, earliness, fruit quality
and disease resistance. The index is calculated with 2 different sets of
secondary traits added in with the primary traits (1 is best).
Correlation (Marketable yield with SWI1) = 0.81**
Correlation (Marketable yield with ARI1) = -0.56**