1) sterility
难稔性
1.
By studying the characters,pollen fertility and fecundity of self-cross of interspecific hybrid,it was found that interspecific hybrid of Dendranthema possessed sterility,which characterized as some interspecific hybrids could not flower normally,the pollen fertility and the fecundity of self-cross were low.
远缘杂交亲本由于缺少可识别遗传信息及染色体同源性差异,种间杂种可能具有难稔性[2]。
补充资料：积稔
1.犹积年。
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