100 Gy ⁶⁰Co -Ray Induced Novel Mutations in Tetraploid Wheat

Figure 2

Chromosome pairing at metaphase I in the pollen mother cells. (a) T. dicoccoides (As835) 237-9, with a quadrivalent (arrowed), (b) T. dicoccoides (As835) 237-11, with 4 univalents (arrowed), (c) T. dicoccoides (As838) 239-7, with 2 univalents (arrowed), (d) T. dicoccoides (As838) 239-8, with 2 trivalents (arrowed), (e) T. durum (As781), with 14 rings of the chromosomes, and (f) T. polonicum (As304) 230-7, with lagging chromosomes (arrowed).

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