雄性

They wanted to find out whether polygynous males had lower survival rates and aged faster than those of monogamous species.

他们希望发现一夫多妻制的雄性是否比一夫一妻制的雄性的存活率更低而且老得更快。

They wanted to find out whether polygynous males had lower survival rates and aged fast er than those of monogamous species.

他们希望发现一夫多妻制的雄性是否比一夫一妻制的雄性的存活率更低而且老得更快。

In order to trace the male cytoplasm transmission during double fertilization process, the mature gametophyte, zygote, proembryo and primary endosperm in Pelargonium hortorum Bailey and Rhododendron mucronulatum Turcz were investigated using transmission electron microscope and DNA staining technique.

本研究应用透射电镜及DNA荧光技术对天竺葵和杜鹃的成熟配子体以及在受精以后雄性细胞器的存在和分布进行了系统的细胞学研究，阐明了这两种植物中雌性生殖单位的超微结构特点及雄性和雌性细胞中质体和线粒体在受精作用中的传递。

At the same time, a chimera gene pTA29-Barnase, which can induce male sterility in transformants, was transferred into three seedy cultivars (Valencia, Ponkan and Anliucheng) to obtain male sterility citrus plantlet in the future. It is a new strategy for seedlessness breeding in citrus.

同时，以柑橘的无核育种为目标，在建立的转化体系的基础上，将人工雄性不育基因pTA29-barnase转入三个多籽品种（伏令夏橙、〓柑、暗柳橙）中，以期创造新的柑橘雄性不育类型，并为今后柑橘的无核育种提供新的思路和材料。

The five kinds of male germ cell cytogenetic assays used to detect genotoxicity of ani-mal drugs to each spermatogenetic stage of male germ cells,such as spermatogonia, primary spermatocytes, secondary spermatocytes,spermatids and spermatozoa,had beensystematically studied.

本文系统地研究了适合我国国情的检测兽药对哺乳动物精原细胞、初级精母细胞、次级精母细胞、精细胞和精子等各个发生阶段雄性生殖细胞遗传毒性的5种测定方法，并首次为国产阿维菌素安全性毒理学评价提供了系统的雄性生殖细胞遗传毒性资料。

The male sterility resulted from nucleus-cytoplasmic interaction (nuclear genome of common wheat--cytoplasmic genome of D〓-type cytoplasm donor), D〓-type CMS was sporophytic sterility pattern.

一、D〓型CMS系的花粉育性对光周期的变化不敏感（不同于已有光敏不育性的报道），属非光敏细胞质雄性不育系；其不育性起因于核质互作（普通小麦核基因组--D〓型细胞质变异基因组）、属孢子体不育类型；雄性不育受核内隐性基因控制、育性恢复受核内显性基因控制。

Ex Spreng was carried out between the male sterile line and its corresponding maintainer line by means of paraffin section.

为了从细胞学角度研究韭菜雄性不育的机理，本试验利用石蜡切片法对韭菜雄性不育系及其对应保持系花药与花粉发育过程进行了比较研究。

Botany A plant having only staminate flowers.

雄性植物：只具有雄性花的植物

In Thompson's gazelle, only males in good physical condition stot, and stotting males are more likely to escape cheetah attacks than those who do not.

在汤姆生瞪羚里，只有身体强壮的雄性才会跺脚，而且，跺脚的雄性瞪羚比不跺脚的更有可能逃脱猎豹的袭击。

In this present study, sterile hybrid progenies derived from optimal combinations guaranteed the protection of intellectual property. Meanwhile, inter and intra-specific hybridization using male sterility and molecular method for hybrid seed identification paved a new way for crossbreeding Tagetes erecta through male sterility.

本研究所选育出的优良组合子代全部是不育类型的杂种，有力地保护了自主知识产权，利用雄性不育进行种内和种间杂交以及分子鉴定杂交种的方法，开创了万寿菊利用雄性不育进行杂交育种的新途径。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。