This paper summarized the experiments which support or negate the existence of female sterility,analyzed the experimental ideas and inference methods of these experiments,especially Sano' s;and concluded that the conclusion that the hybrid sterility is only caused by male or female sterility is a one - sided view,therefore attention should be paid to the genetics of both female and male sterility.

本文對證明水稻亞種間雜種存在和不存在雌性不育的研究進行了綜述與分析久久精品国内，從中可以看出無論是認為水稻亞種間雜種不育性表現(xiàn)為雄性不育還是雌性不育的結論都有一定的片面性欧美另类在线观看；尤其是Sano證明基因座S-5不存在的研究存在較大的缺陷a片射。因此黄色网站视频你懂得，水稻亞種間雜種雌雄配子敗育對小穗育性影響的大小有待進一步研究人人操人人鲁操肉肉。

The effect of gamefocidal 2C derived from Aegilops cylindryca on meiosis and mitosis of pollen grains of triticale.

來自山羊草的殺配子染色體(Aegilops cylindryca 2C)對小黑麥減數(shù)分裂及花粉的有絲分裂的影響亚洲日本久久。

For the approach to the relations between the endangered situation and their sexual reproductive processes in Cimicifuga nanchuanensis, some comparative studies were made in C.simplex , a close and widespread species.

為了探討南川升麻瀕危與其生殖過程的聯(lián)系。對廣布近緣種單穗升麻進行了部分對照研究一级国产男女性爱带套午夜那些事。論述單穗升麻的小孢子發(fā)生和雄配子體發(fā)育以及花藥壁的發(fā)育日韩A片无码毛片免费视频。

The temperature affects the sustained time of secondary sporogenous cell split, the sustained time of microspore mother cell, formation speed and regular of male gametophyte.

溫度影響次生造孢細胞持續(xù)分裂的時間、小孢子母細胞的持續(xù)時間及雄配子體的形成速度和整齊度wdi5.com。

The results showed: four devices flower pollen sacs, anther wall conforms to the basic, from epidermis, the indoor wall, middle (2-3 layers) and tapetal composition tapetum to glandular type.

對懸鈴木小孢子發(fā)生及雄配子體發(fā)育過程進行了觀察毛片视频在线播放，結果表明：花藥具4個花粉囊www人人色，花藥壁發(fā)育為基本型免费黄的网站，由表皮、藥室內(nèi)壁杭州最疯狂一级毛片视频、中層（2-3層）和絨氈層組成久久久特级黄毛片免费看，絨氈層為腺質(zhì)型欧美午夜艳。

NodD binds to and bends target promoters through anchoring two tandem and individual specific DNA sites. NodD functions as a tetramer, which has a V-shaped main body. Tetrameric NodD is to change its own conformation rather than its oligomeric forms in response to small signal molecules. The specific interaction between each NodD DNA-binding domain and each specific DNA site does not alter itself in spite of naringenin induction, and the induced conformational change is transferred from protein to DNA. Only the DNA conformation incited by induced NodD is competent for RNA polymerase to form the transcriptional open complex. It cannot be excluded that NodD may have protein-to-protein contacts with RNA polymerase, and that the NodD conformational change may also directly contribute to the transcriptional open complex formation. However, the NodD conformational change itself cannot serve as the determinant of the transcriptional molecular switch.

通過研究，我們提出了初步的NodD操縱子激活模型：第一91AV网址，四聚體是NodD蛋白的功能單位亚洲乱色无码一区二区，它通過鉚釘兩個串聯(lián)的相對獨立的DNA靶位點結合被誘導的啟動子；第二亚洲唯美国产区，小分子配基的結合是改變NodD四聚體的構象而不是引發(fā)不同形式的寡聚體久久自慰流水喷白浆免费看，在我們的模型中，NodD四聚體縮小其V形主體的彎折角国产免费一级无码A，進而縮短其DNA結合功能域的間距50岁熟女；第三，小分子信號的誘導并沒有改變NodD的DNA結合域和其DNA靶位點的相互作用国产成年无码中国字幕AV片，NodD的構象改變由蛋白質(zhì)經(jīng)其雙鉚釘位點傳遞給DNA欧美色图片一区；第四，只有誘導狀態(tài)的NodD激發(fā)的DNA構象才能有效地使RNA聚合酶形成轉錄開放復合物91香蕉国产线观看免费永久；第五18禁亚洲深夜福利入口导航，不排除NodD與RNA聚合酶可能有直接的相互接觸位點，不排除NodD構象的改變可能直接有利于RNA聚合酶形成轉錄開放復合物又爽又黄一级毛片，但是我們認為NodD構象改變本身不是充當轉錄激活開關的決定因素国产精品碰碰免费观看。

A technique that mimics a business card printing and membership card in making laws and dot dot point of view as well as other business card printing and membership card making characteristics; the child through the use of special thin WOP color (sometimes as GRACol and matching Eurocolor).

該技藝模仿了制卡和會員卡制作洋的網(wǎng)不面增不小次序和網(wǎng)不面角量以及其它制卡和會員卡制作共性；堵住擱置不入格的子薄片為WOP色彩（有時為GRACol和Eurocolor）供應配墨日韩毛片福利在线。

In order to study transmission of 6VS/6AL chromosome through gametes and its genetic stability in different genetic background, the 6VS/6AL translocation line 92R137 (highly resistant to powdery mildew) were respectively crossed to common wheat varieties Bainong 64, Bainong 9310, Han 5310, Xiaoyan 54, Huaimai 20 and Xumai 856 introduced from different areas of China and the hybrids F1 were backcrossed as male and female.

為研究小麥－簇毛麥6VS/6AL易位染色體在不同小麥背景中的遺傳穩(wěn)定性及其在配子中的傳遞亚洲视频免，利用高抗白粉病的普通小麥－簇毛麥6VS/6AL易位系92R137與不抗白粉病的栽培品種百農(nóng)64影音先锋网址资源在线播放、百農(nóng)9310、邯5310亚洲日本看视频、小偃54曰批免费视频播放、淮麥20、徐麥856進行雜交欧美性爱高潮免费看，并用這些品種分別與雜種Fl進行正反回交国内自拍日韩在线观看网站视频。

Source images with wavelet are decomposed, and corner information can be detected in the two approximate sub-images on the wavelet coarsest level. The initial registration parameters are achieved through affine transform model. The optical flow is iteratively refined to get the coarse registration parameters. The process will continue until the final and accurate matching parameters are obtained.

首先對源圖像進行小波分解，在小波金字塔最頂層的低頻近似子圖像上進行角點檢測白丝美大高潮流白浆视频，通過仿射變換模型得到初始配準參數(shù)26uuu欧美视频在线观看；然后將這一參數(shù)逐層進行迭代精煉美女一级a，直至達到金宇塔最底層黄色视频在线免费亚洲，得到最終精確的配準參數(shù)。

A two directional SSHcDNA library of cold acclimation about Physcomitrella patens gametophyte was constructed.

本實驗構建了一個小立碗蘚配子體冷脅迫的SSHcDNA雙向文庫日韩毛片无码一区二区三区。