查询词典 autotetraploid

All these contributed to the genetic selection and improvement in rice breeding. As mentioned above, the results are not only helpful to promote the process ofrice improvement, but also to confirm the basic for further study of autotetraploid rice.

上述产量、品质性状及遗传差异分析的结果，不仅有利于加快同源四倍体水稻的遗传改良进程，而且为进一步研究、利用同源四倍体水稻奠定了初步基础。

Study on the pollen fertility and the process of pollen formation and development in autotetraploid rice showed that the pollen fertility was high (78.33%), though many abnormities appeared in this process.

通过对5个品种的同源四倍体水稻花粉发育过程和13 个品种的花粉育性调查结果表明，同源四倍体花粉平均育性为78.33%，明显比二倍体（91.85%）低。

The formation and development of embryo sac in the diploid and its autotetraploid of rice cultivar IR36 was examined using Laser Scanning Confocal Microscopy.

利用激光扫描共聚焦显微镜术对水稻品种IR36二倍体及其同源四倍体的胚囊形成和发育过程进行了系统的研究。

From 1996 to 2005, someautotetraploid rice had been selected and improved. T-test showed that seed setincreased obviously. The relationships among yield characters of autotetraploid ricewere analyzed.

从1996年到2005年对部分同源四倍体水稻进行了连续选择改良，T检验表明经过9年的选择改良，其结实率显著提高。

To establish a new technique for in vitro rapid propagation and conservation of germplasm of autotetraploid plant of Plalycodon grandiflorum, basal MS medium supplemented with different hormones was filtrated and optimized by using uniform design and orthogonal design.

为了建立优良同源四倍体桔梗的快速繁殖和离体保存技术，采用均匀设计和正交设计以添加不同激素的MS培养基为基本培养基进行筛选和优化。

Along with rapid development of bio-technology, artificial chromosome doubling in vitro is the efficiency approach of producing polyploidy plants. Advances on in vitro induction of autotetraploid in plants was reviewed.

随着生物技术的迅速发展，通过植物离体组织人工诱导多倍体已经成为获得多倍体植株的有效途径，本文就植物离体组织染色体加倍诱导同源四倍体的研究进展做一介绍。

Plalycodon grandiflorum ; Autotetraploid ; Uniform design ; Orthogonal design ; In vitro conservation

桔梗；同源四倍体；均匀设计；正交设计；离体保存

The structure and expression pattern of each storage protein was investigated using one-dimensional SDS-PAGE. Our results showed that the protein content of each fraction in endosperm of autotetraploid rice line is mostly higher than that of its corresponding diploid rice line.

结果表明：同源四倍体水稻胚乳蛋白各组分含量与相应的二倍体相比，大部分呈增加趋势；同源四倍体水稻胚乳蛋白的亚基类型与相应的二倍体水稻基本一致，仅在全蛋白电泳和清、球蛋白电泳中各发现1条差异条带。

The results showed the autotetraploid and triploid cultivars had lower cold resistance than that of diploid under the condition of 12℃ temperature and 1000Lx. With the increase of stress time, the SOD and POD activities of three ploidy cultivars were gradually increased.

低温胁迫对不同倍性西瓜叶片膜脂过氧化及保护酶的影响：通过对蜜枚西瓜幼苗进行低温弱光处理（12℃，光强为10001x，光/暗处理时间为14h/10h）的试验结果表明，在没有冷诱导时M4x、M3x的耐冷性不如M2x。

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。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。