The principles of abnormality and effect on formation of normal microspore were analyzed.

分析了這些異常形成的可能機(jī)制及對正常小孢子形成的影響激情黄色网站专区视频。

Above results suggest that the nuclear genes controlling amyloplast development may express in the uninuclear microspore and continue to be active in the VC, while the genes controlling plastid dedifferentiation may be promoted in the GC after the first mitotic division.

以上結(jié)果表明可能控制造粉質(zhì)體的核基因在單核小孢子中表達(dá)并繼續(xù)在營養(yǎng)細(xì)胞中起作用国产迷在线，而控制質(zhì)體脫分化的基因在第一次有絲分裂后才在生殖細(xì)胞中被啟動欧美精品一二三四区0。

The result showed that the best time for sampling was 7 to 14 days after the first bud flowering on the main anthotaxy. The capacity of embryoid production varied significantly in different genotypes. Among them, twelve genotypes yield embryos successfully, which the rate could reach 71%. Genotype 102 was an ideal material for embryoid induction, and the frequency could reach 32.78 embryos per bud. Genotype that with a highest yield produced 546 times as many embryos as that with a lowest yield. The embryoid induction ability of normal bolting genotypes were higher than easy bolting and hard bolting genotypes.

結(jié)果表明：在秋冬季日光溫室內(nèi)欧美,一区二区三区，供試植株主花序第一朵花開后第7~14天取樣免费女生的视频在线观看网站，即初花期是最佳取樣時期超91自拍偷拍；不同基因型間小孢子胚胎發(fā)生能力差異很大，在接種的17個基因型中国产精品女人高潮毛片，有12個誘導(dǎo)出胚91精品午夜在线看桃花岛，誘導(dǎo)成功率71%；其中102號產(chǎn)胚量最高在线视频区，達(dá)到32.78個／蕾国产后入式免费视频；在已產(chǎn)胚材料中，產(chǎn)胚量最高的基因型是產(chǎn)胚量最低的基因型的546倍1688在线啪国自产视频；較易抽薹型材料的產(chǎn)胚能力大于易抽薹型和不易抽薹型91不卡在线精品国产。

It was found that callose appears in microsporangium at the microspore mother cell formation stage.

結(jié)果發(fā)現(xiàn)，胼胝質(zhì)最早于小孢子母細(xì)胞形成期出現(xiàn)于花粉囊中一级黄色电影视频影院。

The abnormality of tetrad callose wall degradation and tapetum development was associated with the abortion of microspore.

導(dǎo)致小孢子敗育的原因與四分體胼胝質(zhì)壁不適時解體和絨氈層細(xì)胞發(fā)育異常可以进去的黄片、延遲解體有關(guān)。

Staining with the improved carbol fuchsin-aniline blue fluorescence method is a convenient and efficient way to observe the behavior of the callose wall of microspore mother cells during meiosis.

利用改良苯酚品紅－苯胺藍(lán)壓片法可以直接免费观看的av毛片，觀察小孢子母細(xì)胞減數(shù)分裂過程中胼胝質(zhì)的動態(tài)變化成人av小姐网站在线电影。

Callose staining with particular fluorescence dye-Aniline blue indic-ated that the degradation of callose was delayed.

利用胼胝質(zhì)特異性熒光染料甲基藍(lán)對花藥進(jìn)行染色，表明突變體胼胝質(zhì)降解延遲GOGO全球高清私拍摄影，導(dǎo)致小孢子不能從四分體中釋放出來免费看黄网址，最終沒有花粉粒的形成。

In some tetrads, the four nuclei were fused to form onelarge cell with increased chromosome number.

這兩種小孢子發(fā)育的異常只發(fā)生在兩個植株的部分四分體中又粗又爽又黄操女人视频，甚至于同一個四分體的個別細(xì)胞中国产精品专区第1页。

In the study, a set of near isogenic lines of CMS-S, S-Mo17Rf3Rf3 and S-Mo17rf3rf3, were adopted, and TdT-mediated dUTP nick-end labeling, in situ immunolocalization of cytochrome c and DNA ladder assay were employed to study the programmed cell death process on cytology and DNA level. The microscope observation evidenced that tapetal cells of fertile anthers kept intact until microspores, and then were disintegrated on later developmental stage.

S型細(xì)胞質(zhì)雄性不育系的一對近等基因系S-Mo17Rf3Rf3 和S-Mo17rf3rf3為材料，采用TdT介導(dǎo)的dUTP DNA末端標(biāo)記欧美精品区BB区、細(xì)胞色素C免疫原位雜交和DNA寡聚核小體片段電泳等方法久久99精品国产超碰超，分別在細(xì)胞學(xué)水平和DNA水平上研究了玉米CMS-S小孢子敗育的細(xì)胞程序性死亡過程。

Pollen cones terminal, solitary or clustered in leaf axils, or borne in spikelike complexes; individual cones pedunculate or sessile; microsporophylls numerous, spirally arranged, with distinct adaxial and abaxial surfaces; microsporangia 2; pollen 2(or 3)-saccate in Chinese species,.

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