Frequencies of bivalents in the amphidiploids tended to increase obviously in comparison with the expected chromosome pairing model of the meiosis.

与期望染色体配对模式相比，双二倍体中二价体出现的频率有明显增大的趋势。

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Normal chromosome pairing between most species and n. Tabacum is rare.

大多数的种与红花间的正常染色配对是少见的。

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Homologous chromosome pairing in both F_1 and F_2 PMC's was observed.

对F_1和F_2花粉母细胞(PMC)的部分同源染色体配对进行了观察。

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Homologous chromosome pairing in both F_1 and F_2 PMC's was observed.

对F_1和F_2花粉母细胞(PMC)的部分同源染色体配对进行了观察。

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