"EL °3T4 “UOTSA@AUY SO fajuaceied e 10g snodézozaqay st WTUs go4 atdues nizof1qu0y DAY ZUDA GDYOD! woaj Juowery pue oT IUWacTgq 99L 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)