四倍

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。

To establish the efficient in vitro regeneration system and polyploidy induction system, the effects of hormones in media on shoot regeneration from leaves of plants and the suitable methods of tetraploid induction were studied.

为建立寒富苹果高效的离体再生体系和多倍体诱导体系，以试管苗叶片为外植体，研究了培养基中激素对寒富叶片再生芽的影响及适宜的四倍体诱导方法。

The present paper compared the major storage proteins in starchy endosperm of four autotetraploid rice lines with that of their corresponding diploid rice lines. The content of albumin, globulin, prolamin and glutelin in each sample was determined respectively.

以4份同源四倍体水稻和4份相应的二倍体水稻为研究材料，对其种子内清、球蛋白、醇溶蛋白和谷蛋白的含量进行了测定，利用聚丙烯酰胺凝胶电泳技术分析了其特异性。

They have now multiplied sixfold since 2002, compared with the fourfold increase of the 1973 and 1974 "oil shock" that ended the world's long postwar boom.

他们现在成倍增加六倍，自2002年以来，相对於增加了四倍的1973年和1974年"石油冲击"，结束了世界的长期战后繁荣。

If such gametophytes produce fertile gametes, the resulting sporophyte is then tetraploid, and large polyploid series may subsequently be developed.

如果这种配子体能够产生可育的配子，那么形成的孢子体通常是四倍体，这样就可以得到大量的多倍体。

There are tetraploid and diploid regenerated plants in "Page tangelo + Valencia orange" and "Hongju tangerine + Rough lemon".

丹西红橘+粗柠檬和佩奇橘柚+伏令夏橙2个组合的再生植株既有二倍体也有四倍体；

The results showed that the caffeic acid content in tetraploidy taraxacum officinale was 0.29%, and in diplontic taraxacam dissectum it was only 0.105%.

二倍体山西多裂蒲公英中咖啡酸含量仅为0.105%，四倍体药蒲公英中咖啡酸含量高达0.29%，比前者多176.1%。

Dot plot image of DNA fluorescence could form region of diploid and tetraploid in integrated cell.

结果显示：结构完整的细胞DNA的荧光点图形成二倍体、四倍体的区域。

Dot plot image of DNA fluorescence could farm region of diploid and tetraploid in integrated cell.

结果显示：结构完整的细胞DNA的荧光点图形成二倍体、四倍体的区域。

Hybridization of diploid and tetraploid is an effective way to breed seedless triploid citrus.

利用二倍体与同源四倍体杂交是培育无核三倍体柑橘的一种有效方法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。