不育

It was identified that male sterility of Tagetes erecta was Nucleo-Cytoplasmic interaction type with the characteristics of environment insensitiveness and stable inheritance, and was qualitatively controlled by a recessive gene in nucleus.

对雄性不育遗传规律进行了研究，对不同杂交组合亲本和子代的性状进行了分析，找到了一个重要的育性形态标记，即无花瓣型不育类型。

The intine of pollen wall was constructed dur-ing the stage of 2-cellular pollen and consisted ofcellulose material coming from vegetative cell ofpollen.

邓继新等(1990)用生理学方法研究了光敏核不育水稻可育花药和不育花药中的ATP酶含量，发现两种花药有差异。

Cytological observation was made,which indicated that microspore degeneration was a successive process.

比较研究了可育花及两种类型的不育花小孢子发育的细胞形态学特征，发现萝卜小孢子败育是个连续过程，在造孢细胞时期就已出现败育迹象。

Leaves tufted; stipes 15-30 cm long, densely scaly at base, glabrous above; sterile lamina about 60 cm long and 20 cm wide, simply pinnate; pinnae numerous, alternate or subopposite, linear-lanceolate, the largest about 12 cm long and 1 cm wide, base cordate, apex acuminate, margin finely toothed; veins close, forking once or twice and forming areoles near the midrib; fertile lamina similar to sterile ones, but somewhat reduced, about 8 cm long and 0.4 cm wide, lower surface almost entirely covered with sporangia.

叶簇生；叶柄长15-30厘米，基部密被鳞片，向上近光滑；不育叶片长约60厘米，宽20厘米，一回羽状；羽片多数，互生或近对生，线状披针形，最长者长达12厘米，宽约1厘米，顶端长渐尖，基部心形，边缘有细密锯齿；叶脉1-2次分叉，近中脉形成网眼；能育叶与不育叶相似，但较小，长约8厘米，宽约0.4厘米，下部满布孢子囊。

Compared with different type male-sterile line found at binucleate microspore stage non-1B/ 1R type male sterile lines and YS type male sterile lines both increase l7kD polypeptide compared with maintainers.

同时通过对比不同类型的不育系发现非1B/1R类K型不育系732A和YS光温敏不育小麦A3017在小穗发育的二核期均多1条分子量大小为17kD的多肽。

It has showed that plant CMS is the result of the interaction between nuclear and cytoplasmic.

现有的研究结果表明，植物CMS是核不育基因和质不育基因互作的结果，不育性受核质基因的共同控制。

The isonucleus-allocytoplasmic materials ms-Xinong 1376,-Xinong 1376, and ms-Xinong 1376 were used to investigate the protein expression profile in mononucleated anaphase anthers of wheat (Triticum aestivum L.) after silver staining and analysis by PDQuest software. About 320 to 350 distinct protein spots were detected reproducibly.

为了研究小麦雄性不育蛋白表达机制，以具有异质同核的3个亲本：即遗传型不育系ms-西农1376、对应的保持系-西农1376和生理型(化学杀雄剂SQ-1诱导)雄性不育系ms-西农1376为材料，利用IEF/SDS-PAGE凝胶电泳技术，对发育到单核后期的花药全蛋白特异性进行了比较分析，得到320~350个清晰的蛋白点。

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。

Using plant AT-1found by kenaf breeding research group of institute of bast fiber crops Chinese academy of agricultural sciences in Sanya of Hainan province were used as female parent in crossing with 15-4, 04K1 and then backcrossed four times with male parent in order to select two high sterile male sterility.

利用中国农业科学院麻类研究所红麻育种课题组在海南三亚发现的红麻不育株AT-1做母本分别与15-4，04K1做杂交，再用父本回交4次，选育出2个高度不育的不育系。

The results showed that the varieties and activity of POD isoenzyme expression exist in difference in anther of male sterility line and maintainer in different development stage in sweet pepper and hot pepper. POD isozyme activity of anther was very low in meiosis stage in male sterility line of sweet pepper. There is a POD special band in meiosis and pollen mature stage in male sterility line of pepper respectively.

结果表明不育系与保持系，在花药发育的不同时期POD同工酶表达种类及表达活性之间存在差异，其中甜椒不育系在减数分裂期POD同工酶的活性非常低，辣椒雄性不育系在减数分裂期及花粉成熟期分别多一条POD特征带。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐