Clinton Spring (Stage 3) Slicing Cucumber Trial – 2010

NCSU Cucumber Breeding Report - 2010cuke.gif

Todd C. Wehner
Professor

Tammy L. Ellington
Research Specialist


Department of Horticultural Science
North Carolina State University
            Raleigh, NC 27695-7609



Clinton Spring (Stage 3) Slicing Cucumber Trial
2010
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 29 April, and harvested 6 times
     (Mondays and Thursdays) between 10 and 28 June. 
Data Collection
1.   Fruits 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:

 1   G83xNC-59                       NC StateUniv
 2   General Lee                     Clause-HM   
 3   Dasher II                       Mon-Seminis 
 4   Intimidator                     Mon-Seminis 

 
Table 20.  Stage 3 spring slicer trial (Clinton) - 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    Cherokee 87     Check             258      476       39       28     22
  2    General Lee     Clause-HM         256      484       42       21     26
  3    G83xNC-62       NC StateUniv      241      504       36       25     23
  4    G83xNC-59       NC StateUniv      237      517       34       27     26
  5    NC-Sunshine     NC StateUniv      222      375       41       31     13
  6    Dasher II       Mon-Seminis       220      457       40       18     26
  7    G83xNC-58       NC StateUniv      214      406       39       25     20
  8    Intimidator     Mon-Seminis       211      503       33       22     25
  9    NC-Stratford    NC StateUniv      209      422       35       30     20
 10    G83xNC-63       NC StateUniv      195      389       35       31     25
 11    Panther         BayerNunhems      172      334       40       23     18
 12    Ashley          Check             147      313       39       16     12
 13    Marketmore76    Check             145      271       45       13     22
 14    Poinsett 76     Cornell Univ      136      267       40       23     25
_________________________________________________________________________________
       CV (%)                             26       20       17       20     15
       Mean                              205      408       38       24     22
       LSD (5%)                           88      137       11        8      5
_________________________________________________________________________________
Correlation (Marketable yield with % culls) = 0.03ns

 
Table 21.  Stage 3 spring slicer trial (Clinton) - 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    G83xNC-62     NC StateUniv   84  17  276  52  351  67  416  82  462  92
 2    G83xNC-59     NC StateUniv   75  15  240  47  320  62  387  75  494  96
 3    Dasher II     Mon-Seminis    21   5  226  49  286  63  332  73  402  88
 4    Intimidator   Mon-Seminis    11   2  195  37  315  62  398  78  479  95
 5    General Lee   Clause-HM      62  11  191  39  266  55  355  73  418  86
 6    G83xNC-63     NC StateUniv   49  13  179  46  233  60  284  73  329  85
 7    G83xNC-58     NC StateUniv   56  14  176  44  263  65  334  82  371  92
 8    Cherokee 87   Check          23   5  165  34  275  58  354  74  402  84
 9    NC-Stratford  NC StateUniv   47  11  150  35  287  68  335  79  393  93
10    NC-Sunshine   NC StateUniv   24   6  126  34  247  66  298  79  353  94
11    Poinsett 76   Cornell Univ   35  11  109  41  168  66  211  79  243  91
12    Panther       BayerNunhems   14   4   60  18  188  57  249  75  288  87
13    Ashley        Check          13   4   48  15  146  47  232  74  272  87
14    Marketmore76  Check           0   0    3   1   63  24  144  52  226  83
_________________________________________________________________________________

      CV (%)                       67  58   40  22   25  13   23   6   21   5
      Mean                         37   8  153  35  243  59  309  75  367  89
      LSD (5%)                     41   8  103  13  101  12  119   8  129   8
_________________________________________________________________________________
Correlation (Marketable yield with yield in harvests 1-2)      = 0.85**
Correlation (Marketable yield with % of yield in harvests 1-2) = 0.57**

 
Table 22.  Stage 3 spring slicer trial (Clinton) - fruit quality data (cultigens
ranked by average quality).z
_________________________________________________________________________________
        Cultivar          Seed         Average                    Seed- Overall
 Rank    or line         source        quality    Shape   Color   cell impression
_________________________________________________________________________________
  1     NC-Sunshine    NC StateUniv      7.9        7       8       9       8
  2     Marketmore76   Check             7.7        8       8       7       8
  3     NC-Stratford   NC StateUniv      7.4        7       8       8       7
  4     G83xNC-58      NC StateUniv      7.2        8       8       6       8
  5     Intimidator    Mon-Seminis       6.7        7       7       6       7
  6     Panther        BayerNunhems      6.7        7       7       6       7
  7     General Lee    Clause-HM         6.6        7       6       6       7
  8     G83xNC-63      NC StateUniv      6.4        7       7       6       7
  9     G83xNC-59      NC StateUniv      6.3        7       6       5       7
 10     G83xNC-62      NC StateUniv      5.6        6       7       5       6
 11     Dasher II      Mon-Seminis       5.4        6       5       4       6
 12     Poinsett 76    Cornell Univ      5.3        6       7       4       6
 13     Cherokee 87    Check             5.2        5       6       5       5
 14     Ashley         Check             4.7        5       5       5       4
_________________________________________________________________________________
 15     CV (%)                           8.9       12      15      13      10
 16     Mean                             6.4        7       7       6       7
 17     LSD (5%)                         1.0        1       2       1       1
_________________________________________________________________________________
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) = 0.01ns

 
Table 23.  Stage 3 spring slicer trial (Clinton) - fruit dimensions and comments
(cultigens ranked by average quality rating).z
_________________________________________________________________________________
      Cultivar         Seed        Length Diameter  Wt.    Defect 1°   Defect 2°
Rank   or line        source       (inch)  (inch)  (lb.)   2   4   6   2   4   6
_________________________________________________________________________________
 1   NC-Sunshine    NC StateUniv     9.0     2.4    1.09   K   K   H   H   J   K
 2   Marketmore76   Check            8.6     2.3    0.99   K   K   K   T   T   T
 3   NC-Stratford   NC StateUniv     9.0     2.3    1.16   K   K   K   M   J   G
 4   G83xNC-58      NC StateUniv     8.9     2.3    1.11   K   K   T   K   H   K
 5   Intimidator    Mon-Seminis      8.8     2.3    1.03   K   T   K   K   Y   T
 6   Panther        BayerNunhems     9.1     2.4    1.12   K   K   D   T   T   T
 7   General Lee    Clause-HM        8.8     2.4    1.13   K   H   G   K   T   K
 8   G83xNC-63      NC StateUniv     9.0     2.4    1.09   K   G   G   H   K   K
 9   G83xNC-59      NC StateUniv     9.6     2.5    1.32   K   K   M   K   M   T
10   G83xNC-62      NC StateUniv     9.0     2.4    1.25   K   K   H   O   O   K
11   Dasher II      Mon-Seminis      8.5     2.3    0.99   H   H   T   D   T   K
12   Poinsett 76    Cornell Univ     8.6     2.5    1.15   H   H   H   D   K   D
13   Cherokee 87    Check            8.4     2.4    1.05   H   M   M   M   J   H
14   Ashley         Check            8.6     2.4    1.12   H   H   H   M   M   M
_________________________________________________________________________________
     CV (%)                          5.4     5.0   11.20
     Mean                            8.8     2.4    1.11
     LSD (5%)                        0.8     0.2    0.21
_________________________________________________________________________________
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 24.  Stage 3 spring slicer trial (Clinton) - 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    Intimidator     Mon-Seminis         7      195      37        8       8
  2    Panther         BayerNunhems        6       60      18        6       7
  3    Dasher II       Mon-Seminis         6      226      49        9       8
  4    G83xNC-62       NC StateUniv        6      276      52        7       6
  5    Cherokee 87     Check               6      165      34        7       7
  6    NC-Sunshine     NC StateUniv        6      126      34        6       7
  7    G83xNC-63       NC StateUniv        5      179      46        8       8
  8    General Lee     Clause-HM           5      191      39        8       7
  9    G83xNC-58       NC StateUniv        5      176      44        7       7
 10    NC-Stratford    NC StateUniv        5      150      35        6       7
 11    G83xNC-59       NC StateUniv        4      240      47        8       6
 12    Poinsett 76     Cornell Univ        4      109      41        8       6
 13    Ashley          Check               3       48      15        6       7
 14    Marketmore76    Check               2        3       1        7       7
_________________________________________________________________________________
       CV (%)                             29       40      22       11      18
       Mean                                5      153      35        7       7
       LSD (5%)                            2      103      13        1       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) = 0.40*

 
Table 25.  Stage 3 spring slicer trial (Clinton) - disease ratings (cultigens
ranked by average disease resistance).z
_________________________________________________________________________________
                   Cultivar            Seed                 Downy
           Rank     or line           source                mildew
_________________________________________________________________________________
            1      Marketmore76      Check                   3.0
            2      Dasher II         Mon-Seminis             3.3
            3      Panther           BayerNunhems            3.7
            4      Cherokee 87       Check                   3.7
            5      General Lee       Clause-HM               3.7
            6      Ashley            Check                   3.7
            7      Intimidator       Mon-Seminis             4.0
            8      G83xNC-59         NC StateUniv            4.0
            9      Poinsett 76       Cornell Univ            4.0
           10      G83xNC-62         NC StateUniv            5.0
           11      G83xNC-58         NC StateUniv            5.0
           12      NC-Stratford      NC StateUniv            5.0
           13      NC-Sunshine       NC StateUniv            5.7
           14      G83xNC-63         NC StateUniv            5.7
_________________________________________________________________________________
                   CV (%)                                   30.2
                   Mean                                      4.2
                   LSD (5%)                                  2.1
_________________________________________________________________________________
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) = 0.19ns

 
Table 26.  Stage 3 spring slicer trial (Clinton) - 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-62       NC StateUniv     11.0        8.6    8.3      7.4
    2      G83xNC-59       NC StateUniv     10.8        8.6    6.2      5.7
    3      General Lee     Clause-HM        10.2        8.3    6.3      6.3
    4      Dasher II       Mon-Seminis      10.0        8.1    7.5      6.3
    5      Intimidator     Mon-Seminis       9.8        8.0    6.3      6.1
    6      Cherokee 87     Check             9.4        7.7    8.7      8.1
    7      G83xNC-58       NC StateUniv      9.4        7.8    5.5      6.1
    8      NC-Stratford    NC StateUniv      9.0        7.5    6.2      6.8
    9      G83xNC-63       NC StateUniv      8.8        7.3    7.9      8.0
   10      NC-Sunshine     NC StateUniv      8.6        7.4    6.0      7.5
   11      Panther         BayerNunhems      6.9        6.0    8.3      8.8
   12      Poinsett 76     Cornell Univ      6.7        5.8   10.6      9.7
   13      Marketmore76    Check             5.9        5.3    6.4      7.6
   14      Ashley          Check             5.7        5.0   11.0     10.6
_________________________________________________________________________________
           CV (%)                           17.6       14.5   16.8     14.7
           Mean                              8.7        7.2    7.5      7.5
           LSD (5%)                          2.6        1.8    2.1      1.8
_________________________________________________________________________________
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) = 0.94**
Correlation (Marketable yield with ARI1) = -0.40*