The results showed that pepper's microspore develped at three stages: tetrad, uninucleate, and binucleate, and each stage demonstrated distinctive characteristics.

結(jié)果表明中国欧美亚洲范冰冰与中字，辣椒小孢子發(fā)育經(jīng)四分體時期、單核期和雙核期免费a级a一片，各時期特征明顯手淫视频网站。

Monosomic 3, monosomic 5, monosomic 10, trisomic 4 and trisomic 5 as experiment materials, their meiosis behavior of pollen mother cell, pollen characteristics, physiological and biochemical characteristics of anther, section observation of pollen development and the structure of embryo sac were studied, and the effects on the seed set and transmission rate were analyzed.

本文以大白菜同源四倍體小孢子培養(yǎng)產(chǎn)生的且已鑒定為3號單體、5號單體婷婷五月丁香四房、10號單體guochanav、4號初級三體黄色网页视频久久、5號初級三體的非整倍體株系及二倍體株系等為試材，對各材料的結(jié)籽率在线日、雄配子傳遞率進行了統(tǒng)計欧美亲近乱子伦电影，并對花粉母細胞減數(shù)分裂行為、花粉特性亚洲孕妇一级一级毛片、花粉發(fā)育和胚囊結(jié)構(gòu)以及花藥生理生化特性等方面進行了觀察研究色播播影院,噜噜噜噜私人影院，進而分析了其對大白菜單體n-1雄配子和三體n+1雄配子傳遞率的影響。

Unicolor. There were unequal bivalents, homologous chromosome deconjugation, chromosome brige, unequal separation, laggard chromosomes, chromosome outside nucleus, micronuclei arid so on.

unicolor小孢子母細胞減數(shù)分裂異常進行了研究小草AV免费电影在线观看，發(fā)現(xiàn)存在不等二價體人人干人人插日日操、同源染色體早分離、染色體橋欧美色色色日、不均等分離一级黄色网站毛片、滯后染色體、核外染色體午夜无码人妻AV大片色欲、微核等国内精品久久久久精免费。

The results were as follows: 1.Inoculated on the induction medium at the late uninucleate stage,the microspores could initiate embryogenesis by first divisions in both symmetric and asymmetric patterns,but the former was predominant.

通過觀察玉米小孢子胚胎發(fā)生的細胞形態(tài)學特征，發(fā)現(xiàn)：離體培養(yǎng)條件下單核后期的花粉可以通過均等分裂和不均等分裂兩條途徑形成胚狀體一级黄色生活视频一区二区，與前人的研究結(jié)果一致免费看大秀视频网站。

Osg6B, a promoter from rice, can direct gene expressing in anther tapetal during the early developmental stage of microspore from tetrad to uninucleate pollen, with high temporal and spatial specificity.

osg6B是來源于水稻花藥絨氈層的特異性的啟動子，它在小孢子發(fā)育的四分體時期至單核花粉期在花藥絨氈層中特異啟動基因的表達黄色网站A全，它具有較為嚴緊的時空特異性国产日韩一区。

Cytological observation Result showed that 54%-70% little spore stated in uninucleate stage when bud was long 2.0-3.0mm, Petal to anther was 1/2-4/5, this time was the best period for anther culture.

結(jié)果表明，當花蕾長為2.0~3.0 mm非洲一二三区激情视频，花瓣與花藥長度之比為1/2~4/5時午夜精品理论免费影院在线观看，54%~70%的小孢子發(fā)育處于單核靠邊期，最適合進行花藥培養(yǎng)老黄视频欧美狂野。

The accumulation of starch, vacuolation of multinucleate microspores and degeneration of anther wall affected microsporic embryogenesis.

淀粉粒的積累色色色色色色色色色色好看，多核小孢子的液泡化以及花藥壁的衰退都可影響雄核發(fā)育。

The development of Peiai 64S and IR36 did not differ up to microsporocyte formation stage; but since meiosis stage, male reproductive cells of Peiai 64S underwent several structural changes and ultimately terminated by early bicellular stage.

結(jié)果表明www在线观看视频一级，小孢子母細胞減數(shù)分裂之前台湾一级毛片免费视频，培矮64S與IR36的發(fā)育過程基本相似。但從減數(shù)分裂開始白白看看首页永久免费观看视频，培矮64S的雄性性細胞出現(xiàn)一些異常變化国产iGAO手机视频网，并最終發(fā)育至二胞花粉早期敗育。

To study the similarities and differences between male sterility induced by physiology and heredity, different male-sterile materials induced by heredity [S-type male-sterile line ms2611, ms1376] and physiology (induced by high temperature and chemical hybridizing agents SQ-1), Xinong 1376 and Xinong 2611 were used as materials, and their spikes at mononucleated prophase stage, anther and flag leaf at mononucleated anaphase stage, binucleated stage and trinucleated stage were used to conduct protein analysis.

為了研究小麥遺傳型和生理型雄性不育在生化機制上的異同手机日本黄色电影网站，以遺傳型［S型不育系ms2611和ms1376］和生理型雄性不育小麥西農(nóng)2611和西農(nóng)1376（高溫誘導和化學殺雄劑SQ-1誘導的雄性不育）為材料人人操在线精品，分別取其小孢子處于單核早期的幼穗，單核后期、二核期国产欧美乱色伦、三核期的花藥及旗葉進行了可溶性蛋白質(zhì)的比較研究a毛片网站全部播放。

Tapetum cells degenerated and only ER small vesieles were the visible organelle at the 2—celled pollen stage.

絨氈層在小孢子液泡化中期開始退化，開始退化的絨氈層表現(xiàn)為內(nèi)質(zhì)網(wǎng)腔膨大99久久精品毛片免费播放高，核周腔增大亚洲黄色不卡视频，核孔數(shù)增加。