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Table 2.
Pollen mother cell chromosomal aberrations in Yachaeranthera tortifolia
from Reck Vailey Experimental Radiation Field
NEAR THE SOURCE ~ DOSE RATE 2.5 TO 4.5 R/DAY
Prophase I — Metapnase 1
£9e
Sample
Number
Fragments
511,21
68
132
133
134
151
187
208
210
211
1
0
0
0
7
0
9
0
0
* Normal "
lotal
Fragments
Dicentrics
1
1
0
1
}
0
“0
1
2
2
|
0
}
8
0
0
1
2
149
149
157
1h
68
151
150
165
149
151
150
157
12
76
151
150
156
151
0
0
0
0
0
0
2
1
0
93
6
0
0
5
9
4
0
4
93
6
0
Q
5
9
6
1
4
15
124
Totals
8
7
0.6
0.6
Total
Anaphase [ — Telophase |
Abert ations
Percents
1
:
1239
1254
3
let
98.8
190.0
0.6
23.6
Percent Aberrants Prophase I — Metaphase |
(1.2 Total Aberrations)
Total
Aberrations
“ Normal" 4
Total
52
37
39
a
28
a7
71
27
58
145
43
39
0
33
86
77
28
62
389
513
75.8
100.0
Percent Aberrants Anaphase I — Telophase 1
(24.2 Total Aberrations)
Percent Aberrants Prophase — Metaphase Plus Anaphase | — Telophase [ = 139/1767 = 7.9%°
OUTSTOE IMMEDLATE SOURCE AREA — DOSE RATE LESS THAN 1.0 2/DAY
114
118
122
145
219
)
3
)
0
0
0
5
i)
1
0
0
3
1
1
0
45
Totals
4
1
Percents
0.6
0.)
Percent Aberrants Prophase I -- Metaphase I
{0.7 Total Aberrations)
156
153
149
59
153
156
156
150
60
153
2
0
Q
0
]
8
9
3
3
7
40
9
3
3
8
33
670
675
3
30
99.2
99.9
li
11.0
98
4
30
34
73
239
272
87.9
100.0
Percent Aberrants Anaphase 1 — Telophase |
{12.1 Total Aberrations}
Percent Aberrants Propnase — Metaphase Plus Anaphase 1 — Telophase I = 38/940 = 4.0%?
‘Five bivalents plus two univalents.
*These values are not statistically different based on Minn Whitney test.
103
13
33
cy)
8)