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Diploid species and hexaploid, octoploid species of triticeae had remarkable differences in micro-morphological characteristics of pollen grain and stomata. However, some differences between hexaploid species and octoploid species were not significant.

可见,小麦族二倍体物种与六倍体物种、八倍体物种在花粉粒和气孔的微观特征方面有明显差异,但六倍体和八倍体物种之间差异不明显。

Comparison of the micro-morphological characteristics of pollen grain and leaf epiderm among diaploid Thinopyrum elongatum, Elytrigia intermedia, common wheat and octoploid Tritielytrigia types were carried out by observation under scanning electronic microscope.

方法]通过扫描电镜对二倍体长穗偃麦草、中间偃麦草、普通小麦、和八倍体小偃麦的花粉粒和叶表面的微观形貌特征进行了比较。

The spikes per plant of diploid and tetraploidspecies were higher, but the kernels per spike, 1000 kernels weight and grain yield werelower than those of hexaploid and octoploid species. The NYE, NHI and NPE of diploidand tetraploid were lower; NDE was higher than these of Hexaploid. Variation of NPE andNYE was higher than other NUE indexes, which indicated that NPE and NYE could beused as indexes for NUE differences in different wheat related species.

与普通小麦相比,二倍体和四倍体材料单株穗数较多,但穗粒数、千粒重和产量比较低;氮素籽粒生产效率、氮素收获指数和生理效率比较低,具有较高的氮素干物质生产能力;NYE和NPE的变异性较大,可以作为小麦不同近缘种氮素利用效率差异的主要指标。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。