VARIABILITY IN LINKAGE OF CHARACTERS OF MAIZE 
29 
the evidence it would seem logical to conclude that a differential 
maturity is involved, with the waxy pollen reaching maturity at a 
later period than the horny. 
Table 18. — Differences in percentages of ichite, waxy, and crossovers, in fresh 
and old pollen of oack-crossed ears (2 cc icx wx X S Cc Wx ivx) 
[The minus sign preceding a difference indicates cases where the old pollen was deficient] 
Heterozygous 
Age of 
pollen 
Pollen application 
Number 
of 
seeds 
Percentage of— 
plant No, 
Hr. 
Min. 
White 
Waxy 
Crossovers 
8 
8 
7 
7 
7 
7 
8 
8 
5 
7 
8 
7 
5 
10 
40 
15 
10 
05 
20 
25 
20 
30 
25 
[Fresh .. 
824 
148 
46. 1±1. 17 
64. 2±2. 65 
45. 5il. 17 
76. 4=h2. 35 
33 3=1=1 11 
3988 
lOld 
34. 0=h2 62 
I Difference . 
18. 1±2. 88 
30. 9i2. 61 
. 7=1=2 84 
[Fresh 
577 
289 
50. 4±1. 40 
57. 8±1. 95 
44. Oil. 92 
80. 3=1=1. 58 
38 8=1=1 37 
3984 
lOld 
33. 5=1=1. 87 
7. 4±2. 41 
36. 3±2. 49 
—5. 3=1=2 32 
[Fresh 
496 
233 
47. 8±1. 51 
54. 5i2. 20 
48. Oil. 51 
63. 9±2. 12 
37. Oil 46 
JOld 
41. 3=h2. 17 
3993.. 
. 
6. 7±2. 67 
15. 9i2. 62 
4. 3±2. 62 
[Fresh 
295 
69 
42. 7±1. 94 
52. 2±4. 05 
44. lil. 94 
56. 5=1=4. 03 
39. 9=1=1. 92 
Old 
39. 2±3. 98 
3989 
[Difference. . _ . 
9. 5=1=4. 63 
12. 4d=4. 46 
— . 7±4. 41 
[Fresh 
359 
257 
47. 7±1. 78 
52. 9i2. 10 
45. 1=1=1. 77 
60. 7±2. 05 
41. l=t=l. 75 
JOld 
34. Oil. 99 
3994 
. 
5. 2±2. 75 
15. 6i2. 72 
-7. Ii2. 65 
160 
133 
47. 5±2. 66 
57. 9±2. 88 
43. 8i2. 64 
82. 0±2. 25 
47. 7i2. 67 
4009 
lOld 
46. 5i2. 92 
10. 4±4. 00 
38. 2i3. 47 
— 1. 2i3. 95 
[Fresh.. 
355 
371 
50. 7±1. 79 
55. 5=1=1. 74 
48. 7±3. 18 
61. 5=1=1. 70 
43. 7il. 78 
4010. 
lOld 
40. 6il. 72 
4. 8=1=2. 49 
12. 8=1=2. 17 
-3. 1=1=2. 47 
[Fresh. . 
628 
674 
44. 7=1=1. 34 
49. 4=hl. 30 
43. Oil. 33 
53. 9=1=1. 29 
35. 6il. 29 
lOld 
33. Oil. 23 
3998 
4. 7±1. 87 
10. 9=1=1. 85 
-2. 6il. 78 
[Fresh ... .. 
181 
128 
53. 0±2. 50 
53. 1=1=2. 98 
55. 2i2. 48 
52. 3±2. 98 
36. 5=1=2. 41 
JOld 
38. 3i2. 91 
3977 
. 1=1=3. 77 
-2. 9=1=3. 86 
1. 8i3. 77 
[Fresh 
283 
313 
48. 1=1=2. 00 
57. 8il. 88 
46. 3=1=2. 00 
76. Oil. 63 
33. 5il. 88 
4013 
lOld 
39. 9=1=1. 87 
[Difference .. 
9. 7=1=2. 75 
29. 7=1=2. 58 
6. 4±2. 65 
[Fresh. 
408 
77 
50. Oil. 67 
67. 5i3. 60 
44. 9=bl. 66 
62. 3i3. 70 
34. 9=1=1. 59 
Old 
33. 0±3. 63 
4019 
I Difference.. 
17. 5=1=3. 97 
17. 4±4. 07 
-1. 9=1=3. 95 
[Fresh .. . .. 
1974 
635 

48. 2±1. 08 
50. l=hl. 34 
46. 9=1=1. 08 
51. 6=1=1. 34 
38. 1=1=1. 05 
lOld.... 
37. 2=1=1. 29 
4022 
(Difference 
1. 9±1. 72 
4. 7il. 72 
-. 9=1=1. 66 
[Fresh. 
310 
26 
52. 9=1=1. 91 
53. 8=1=6. 66 
47. 4il. 91 
38. 5±6. 44 
38. 8il. 87 
JOld 
36. 4i6. 36 
3992 
[Difference 
. 9=1=6. 94 
-8. 9i6. 72 
-2. 4i6. 60 
(Fresh 
5,850 
3,353 
400 
258 
\01d 
[Fresh. 
48. 1 ± . 48 
53. 98i . 83 
45. 98=h . 44 
62. 03=1=2. 00 
37. 55i. 61 
Mean 
lOld 
36. 91i. 67 
[Difference 
6. 50i. 676 
16. 73i2. 2 
-1. 18i6. 59 
1 Average of three fresh (a. m.) pollinations. 
