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. 2019 Apr 5;14(4):e0214953. doi: 10.1371/journal.pone.0214953

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© 2019 Bei et al

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig 2 — (a): Pollens of diploid rice (>95% pollen fertility). (b) and (c): Pollens of autotetraploid parents (T44 and T45), Arrows indicated abnormal pollens. (d), (e) and (f): Pollens of neo-tetraploid rice lines, and more than 92% pollens were normal. (g) The normal structure of mature embryo sac in diploid rice, showing the egg cell (E), synergid (S), polar nucleus (P) and antipodal (A). (h) and (i) The normal structure of mature embryo sac in autotetraploid parents. (j), (k) and (l): The normal structure of mature embryo sac in neo-tetraploid rice lines.