Summary
Chromosome association at MI of PMCs in hybrids of I. laevigata x I. ensata was examined and compared with that of parental species. The mean chromosome association per cell in the parental species was 0.02I+11.99II for I. ensata (‘Kachô’, 2n=24), 0.11I+15.94II and 0.15I+15.92II for I. laevigata (‘Yukidôrô’ and wild type, 2n=32), respectively. On the other hand, the mean chromosome association per cell in the hybrids (2n=28) was 20.22I+3.88II+0.0046IV for ‘Yukidôrô’ × ‘Kachô’ and 20.92I+3.54II for wild type × ‘Kachô’. Thus, the hybrids indicated a low homology between I. ensata and I. laevigata, and did not exhibit pollen and seed fertility. The utility of the hybrids was discussed.
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Yabuya, T. Chromosome association and fertility in hybrids of Iris laevigata Fisch. x I. ensata Thunb. . Euphytica 33, 369–376 (1984). https://doi.org/10.1007/BF00021134
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DOI: https://doi.org/10.1007/BF00021134