The present work was de-signed to study systematically the changes of anther and pollen during themannitol pretreatment period on physiology and biochemistry;and then the ef-fects of mannnitol pretreatment on androgenesis and anther culture were stu-died.The donor plants used in this experiment grow in the field.

所以本文從以上幾個問題出發(fā)，以大田生長的植株作為供試材料91免费国产极品视频，首次系統(tǒng)地研究了甘露醇預(yù)處理過程中大麥花藥花粉在生理生化方面所發(fā)生的變化国产日韩三级片；以及甘露醇預(yù)處理后對大麥雄核發(fā)育和培養(yǎng)效果的影響。

It is concluded that there are three reasons resulted in male-sterility by floral organs abormality as follows :(1) The stomium enlongates faster;(2) Anther filaments do not elongate sufficiently to position the locules above the stigma at anthesis;(3) The anther locules do not dehisce at the time of flower opening (although limited dehiscence occurs later).

用石蠟切片技術(shù)国内精品1024地址一地址二，在光學(xué)顯微鏡下觀察擬南芥部分雄性不育材料小孢子發(fā)育過程和各時期的花形態(tài)特征欧美日韩精品综合，分析雄性不育的原因。從花表型上分析導(dǎo)致雄性不育的原因有三個方面：（1）柱頭伸長過快黄色网站在线观看2019；（2）花藥生長過慢久久久久国产一级毛片高清版；（3）花藥開裂晚。

More calcium precipitates were located in the epidermis, endothecium and tapetum of the sterile anther than in those of the fertile anther. Longitudinal inner cell wall of the sterile anther became thicker than that of the fertile anther at the dyad stage and uninucleate pollen stage.

到四分體與單細(xì)胞花粉時期2021亚卅精品，不育花藥的木質(zhì)部細(xì)胞的次生加厚壁上有較多的Ca2+沉淀AAA黄色视频免费看，連接組織中的Ca2+沉淀也大大增加，所有不育花粉外壁較厚而發(fā)育都不正常按摩毛片性。

By using a DH population derived from a rice indica/japonica cross, genetic analyses of floral characters, such as percentage of exserted stigmas, stigma length, stigma width, style length, anther length, anther width, spikelet length, spikelet width, length-width ratio of spikelet, and panicle exsertion degree, were conducted in the present study.

利用一個水稻秈粳交（窄葉青 8 號/京系 17 ）來源的 DH 群體對水稻柱頭外露率女人的逼逼视频、花柱長、柱頭長人人模人人模人人操人人干、柱頭寬免费久久一级欧美大黄、花藥長、花藥寬国产成年综合、穎花長99riav67、穎花寬和穎花長寬比 9 個花器性狀和穗抽出度進(jìn)行遺傳分析。

In anther culturesucrose is betterbut more attention should be paid to maltose which has a positive effect in anther culture.

在植物花藥培養(yǎng)中日韩一区二区A片免费，蔗糖較好一级婬片A片AAA毛片，但應(yīng)注意麥芽糖對花藥培養(yǎng)的促進(jìn)作用。

In anther culture, sucrose is better, but more attention should be paid to maltose which has a positive effect in anther culture.

在植物花藥培養(yǎng)中内射美女处女视频，蔗糖較好8050国产午夜二级，但應(yīng)注意麥芽糖對花藥培養(yǎng)的促進(jìn)作用。

Pollen plants from octoploid triticale anther culture were propagated as clone linesand had been used as anther donors for further culture in two successive years....

由八倍體小黑麥花培所得的花粉植株再進(jìn)行一次花培精品自拍1314，在所獲得的 C 類植株中就能選出花培效率達(dá)到八倍體小黑麥水平的個體华人在线观看。

The capacity of dehiscent anther was determined to the size and the morpha of anther stomium cell, epidermal cell and fibrous stratum's plastic property of the pollen sac wall.

成熟花藥開裂的能力與花藥裂口細(xì)胞的大小、形態(tài)有關(guān)国产真实强推不让在线观看，同時又與成熟花粉囊壁的表皮細(xì)胞和纖維層細(xì)胞的可塑性結(jié)構(gòu)功能有關(guān)jiujiuse在线。

The DGCMS plants were complete sterile at the both temperature situations, and there was no pollen sac differentiation and had smaller petals and stamens at the higher temperature situation, but there were 1～4 pollen sacs in each anther and had bigger petals and stamens at the lower temperature situation. The cytological characteristics of the anther development were the same as that of GMS plants in Yi-3AB.

表現(xiàn)質(zhì)核不育的植株，在高溫條件下黄片免费2021，花瓣小，表現(xiàn)徹底的pol CMS不育，無花粉囊的分化国产一级做a爱免费视频，在低溫條件下免费毛片入口，花瓣變大，也表現(xiàn)徹底雄性不育欧美强奸乱轮，具有核久操国内精品、質(zhì)不育的共同特點，每個花藥可分化出1～4個花粉囊2005最新免费黄色网站，但無可育花粉国产制服丝袜在线91，其雄性敗育時期和特點與宜3A相同。

The results show that: Each anther has four pollen sac, anthers from the epidermis, medicine room wall, the middle, composed of the tapetum, Mature middle and all the disintegration of tapetum; is symmetrical tetrad type, pollen is a 2 - cell-type pollen; in anther culture lei check standards should be time for about 3-4mm.

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