It was proved by ultrastructure observations that male plastid excluded during microspore mitosis.

超微結(jié)構(gòu)的研究證明了菜豆雄性質(zhì)體在小孢子分裂時(shí)被排除脚交视频一区二区，質(zhì)體全部分布在營養(yǎng)細(xì)胞中国产精品免费一区二区久久，初形成的生殖細(xì)胞已不含質(zhì)體美女艹网站免费。

Stomia The site at which a sporangium or pollen sac ruptures to release the spores or pollen.

裂口：孢子囊或花粉囊的開裂位置免费在线综合，小孢子或花粉粒從中散出。

The abnormal expression of COD is one of the cause of the pollen abortion.

細(xì)胞色素氧化酶的異常表達(dá)是小孢子敗育的原因之一www黄色小说com...。

F1 hybrid has the morphological feature which is between the male and female parents and shoed strong heterosis, exuberant vitality, late ripe period and low rate of self-fertility. The average chromosome configuration of F1 in PMC MI was 18.58Ⅰ+18.59Ⅱ+0.085Ⅲ+0.028Ⅳ. At anphase Ⅰ in PMC, some laggard chromosomes arranged in equatorial plate. Micronucleus and a lot of abnormal cells can be observed at dyad, tetrad and microspore.

雜種F1形態(tài)特征介于雙親之間久久久经典中文字幕一区二区三区，具有較強(qiáng)的雜種優(yōu)勢，生長旺盛精品毛片一区二区免费看，熟期晚A欧美网站，自交結(jié)實(shí)率較低。F1花粉母細(xì)胞減數(shù)分裂中期Ⅰ平均染色體構(gòu)型為18.58Ⅰ+18.59Ⅱ+0.085Ⅲ+0.028Ⅳ一级免费黄片插插插，PMC后期Ⅰ觀察到部分落后染色體排列在赤道板上清纯唯美亚洲综合五月；二分體、四分體和小孢子時(shí)期你懂得视频网站，細(xì)胞內(nèi)普遍觀察到微核日韩欧美一区二区视频，且出現(xiàn)大量異形細(xì)胞。

Based on principle of pollen abortion, utilizing tapetum of anther cell, mitochondria of tapetum, callose well, process of cell meiosis during formation process of pollen, we adopt genetic transformation to create plant male sterility, such as, exogenous cytotoxin gene, chaperones, anti-sense RNA, degradation of callose ahead of time, disturbing information intercommunion between mitochondria and nucleolus and affected development of pollen sporule by bacteria.

根據(jù)花粉敗育的原理国产福利一区在线，利用花藥細(xì)胞絨氈層欧美片在线观看、絨氈層線粒體、胼胝質(zhì)壁四川老熟女下边又黑又肥、細(xì)胞減數(shù)分裂過程等花粉形成過程中的不同環(huán)節(jié)91黄版短视频在线看，采取外源細(xì)胞毒素基因、分子伴侶深夜久久久、反義RNA技術(shù)精品九久、提早降解胼胝質(zhì)、擾亂線粒體與細(xì)胞核之間的信息交流和細(xì)菌影響花粉小孢子發(fā)育等策略呦呦呦网站，使花粉不能正常形成美女一级黄色视频免费看，從而產(chǎn)生不育花粉久久99久久99精品免视频，達(dá)到產(chǎn)生雄性不育的目的亚洲三区精品国产福利。

Different fruit type of sweet and hot pepper were used as experimental material.

不同類型辣椒游離小孢子的雄核發(fā)育與胚胎發(fā)生程序相同。

It was speculated that the sterility of the RNMS line was related to the delay of tapetum cells breaking down.

因此久久网精品aaa，四川隱性核不育是絨氈層降解延遲導(dǎo)致小孢子解體而發(fā)生的無花粉雄性不育制服丝袜中文字幕av第一页。

The tapetum cells oftrisomic 7 and 10 showed abnormal phenomenon at meiosis,but trisomic 7 recovered normality at other periods.

而10號(hào)三體的絨氈層雖在四分體時(shí)期表現(xiàn)正常，但在小孢子時(shí)期又表現(xiàn)了異常A级毛片18以上观看免费网站，并且花粉全部敗育日韩欧美国产一卡。

In succession, the middle layer of anther wall had the strongest Ca^2＋ fluorescence intensity, and the tapetum took second place during the meiosis of microspore mother cell.

小孢子內(nèi)Ca^2＋分布不均勻，細(xì)胞質(zhì)中的Ca^2＋熒光較弱https://igao39.com…，細(xì)胞壁處Ca^2＋熒光較強(qiáng)开操网，二細(xì)胞花粉時(shí)期精品日韩妖精视频网站，細(xì)胞呈現(xiàn)較強(qiáng)的Ca^2＋熒光。

ATPase precipitates were present in the microspore cell during the early tetrad stage.

四分體早期的小孢子細(xì)胞質(zhì)中開始出現(xiàn)ATPase反應(yīng)顆粒日韩精品国内直播在线观看视频免费。