Stacked rER cisternae dilated and rER blebs formed; tapetal cell nuclear envelopedistended and nuclear pores increased in number.

在自由小孢子期在线黄色国产91，絨氈層內(nèi)質(zhì)網(wǎng)發(fā)生疊堆好爽黄色视频，可能是對(duì)小孢子液泡化后產(chǎn)生的膨壓和張力的一種適應(yīng)。

The results shows that the tapetal expanding abnormally occurs in dyadphase stage, microspore abortion occurs in the early of monokaryon stage, disaggregation in the end of monokaryon stage, only some spall of microspore is observed in monokaryon stage, the four cell walls also exist, the tapetal cells became completely vacuolated, almost filled the whole locule. vascular bundle of male sterile line anther vanish at mature pollen stage.

結(jié)果發(fā)現(xiàn)花藥絨粘層在二分體時(shí)期發(fā)生異常怡红院宜春院十次综合啦首页，小孢子在單核前期開始敗育全网黄色在线看，至單核后期完全解體，花藥發(fā)育后期不育系藥腔中只觀察到少量的小孢子殘?bào)w黄色网站视频网址，花藥壁的四層細(xì)胞依然存在91原创自拍视频，絨粘層細(xì)胞已經(jīng)徹底液泡化，占據(jù)了藥腔的整個(gè)空間久免视频免费一区，花粉成熟期不育系花藥維管束消失永久免费黄片啊啊啊。

No tapetal cells were formed or tapetam collapsed at very early stage in some anther chamber during the microsporogenesis; Pollen mother cells in another chamber were not developed and microspore vacuolized; Tapetum cells developed abnormally, giantized and crammed the anther chamber; Some tapetum cells developed normally, but PMCs developed abnomally, which deformed at sporogeneous stage, and then were abhensive each other and finally degenerated. Nearly no PMCs could complete the process of meiosis, and form the tetrad, leading to the failure of normal microspore development.

藥室的絨氈層細(xì)胞不形成或提前解體；藥室內(nèi)的花粉母細(xì)胞不發(fā)育或小孢子液泡化亚洲屄屄视频网站；絨氈層細(xì)胞發(fā)育異常欧美18XXOO视频在线观看，出現(xiàn)巨型化而擠滿整個(gè)藥室；絨氈層細(xì)胞雖發(fā)育正常亚洲免费在线观看视频，但花粉母細(xì)胞發(fā)育異常国产对白放荡AV，在造孢細(xì)胞時(shí)期即開始出現(xiàn)變形現(xiàn)象，隨后發(fā)生粘連退化欧美、日韩黄片；絕大部分花粉母細(xì)胞不能完成正常的減數(shù)分裂過程形成四分體未满18勿入网站，導(dǎo)致小孢子退化。

Microscopic observation of microsporogenesis of the male sterile lines revealed that abortion occurred mononuclear stage. The tapetal cells became higly vaculate, pressing the microsporocyte seriously, interfering the normal microsporpgenesis development and finally leading to pollen grain abortion.

進(jìn)一步對(duì)其細(xì)胞形態(tài)學(xué)進(jìn)行觀察結(jié)果表明97在线视频人妻无码一期，ogura和改良型不育系敗育時(shí)期發(fā)生在單核花粉期欧美综合色一区二区三区，絨氈層異常膨大，擠壓小孢子正常發(fā)育一级黄免费网站，小孢子液泡化而導(dǎo)致敗育女被男啪到爽的视频网站，并且在花藥發(fā)育過程中有一些異常現(xiàn)象發(fā)生五月婷婷精品视频6。

The vacuolated cytomplasm could not provide energy for mitotic division, which made microspores keep at that stage. At last single nucleus microspores disappeared.

單核小孢子在發(fā)育過程中由于細(xì)胞質(zhì)液泡化国产污片免费，不能為核有絲分裂提供能量，使小孢子停滯在單核期一级黄色视频大片，最終消失强插在线观看。

The proliferation of the anthers and pollens were distinctly dysplastic. During the prophase of abortive pollens, the tapetums and middle layers of quadrants separated; during metaphase, the microspores were development arrest; during anaphase, the tapetums and microspores gradually disappeared after combination, the anthers finally turned into drying and shriveling to be unable to form pollens.

如主莖開花初期提前1~2d操美国美女，花萼和雄蕊個(gè)數(shù)為4~6個(gè)，花藥室數(shù)為2~4個(gè)搞那个黄色片来看一下，開花后花藥呈白色或淡綠色日本一区二区久久人妻高清，表面無皺紋，并延遲脫落2017av在线视频；其花藥和花粉發(fā)育明顯異常黄色一级国产视频，敗育初期在四分體期絨氈層與中層分離，中期小孢子形成時(shí)期發(fā)育停滯欧美一级精品日韩，后期絨氈層與小孢子粘連后逐漸消失级特大黄片视频影院春色，終期花藥干癟，不能形成花粉人人妻,人人操,人人爱人人乐。

Molecular studies have identified some genes participating in this process, including those regulating anther cell division and differentiation, controlling male meiosis, supporting pollen development, and promoting anther dehiscence.

分子生物學(xué)的研究已經(jīng)發(fā)現(xiàn)了一些參與這一過程的基因鸥美性爱操逼视频，包括控制花粉囊組織的分化、小孢子母細(xì)胞的減數(shù)分裂国产黄AV网站免费、小孢子的發(fā)育和花藥的開裂等毛片一区二区三区四区播放。

The treatment with 0.05% activated charcoal produced 24 embryos per plate,which increased 1.7 embryos per plate,as compared with the treatment without activated charcoal.

對(duì)甘藍(lán)型油菜小孢子培養(yǎng)再生植株的染色體加倍及移栽的研究結(jié)果表明，在小孢子培養(yǎng)初期加50mg/L秋水仙堿加倍效率最佳在线观看免费毛片高清，加倍率達(dá)到67.6%日韩天堂免费视频在线。

At the late microspore developmental stage, abundant ppts were found specifically at the germ pore and in the large vacuole of microspore.

在小孢子發(fā)育晚期，在花粉萌發(fā)孔處和小孢子大液泡中也特異性地聚集了較多ATPase顆粒精品自拍日韩视频在线播放免费观看。

In the isolated microspore culture, part of microspores were swelled and few could develop into tetrads and died after 1 week..

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