As the ovule is fully developed, the obturator becomes considerably large and closely covers the micropyle.

隨著胚珠生長，珠孔塞逐漸增大，胚珠成熟時珠孔塞變得相當(dāng)大并緊密地覆蓋在珠孔上iGao中文视频网为爱搞点激情。

For thesake of knowing mechanism of preparing nacreouspigment of mica titanium and adjusting pH with urea, we need to measure fast and exactly concentration of titanium to direct preparing top grade nacreous pigment of mica titanium.

為了更好地了解尿素中和法制備云母鈦珠光顏料過程中鈦水解的機(jī)理国产福利网在线，指導(dǎo)高檔次云母鈦珠光顏料的制備，需要對該過程中鈦的含量進(jìn)行準(zhǔn)確快速的測定久久久亚洲天堂，本文對過氧化氫分光光度法測定鈦的方法進(jìn)行了實驗研究gogo全球高清国模私拍。

Double steel-ball extrusion deep hole solves the matching problem of steel-ball nucellus with workpiece axis, using this technology, extruding deep hole with smaudiameter is attained efficiently with high quality .

文摘：雙珠式擠壓深孔有效地解決了鋼珠珠心與工件軸心重合的問題，高質(zhì)高效地實現(xiàn)了較小直徑深孔的擠壓加工思思久久成年人免费视频，實踐證明强奸高潮视频，且能實現(xiàn)彎孔的高精加工。

The results showed Cosmos bipinnatus had a stronger capability of accumulating Pb in shoot than Trachymene coerulea and Dianthus caryophyllus, which had the weakest accumulating ability. Cosmos bipinnatus accumulated more Pb in root than Dianthus caryophyllus and Trachymene coerulea, which accumulated the lowest Pb.

結(jié)果表明三種觀賞花卉中波斯菊地上部吸收富集鉛的量最大找点黄片看看听听叫床，積累鉛能力最強(qiáng)另类激情视频，其次為翠珠花，香石竹吸收積累鉛能力最弱wwwbbbb；根部鉛富集量最大的為波斯菊，其次為香石竹免费观看中日韩毛片视频，翠珠花根部鉛吸收積累能力最弱在线a片视频。。

Seven grapevine cultivars originated from different regions, i. e.'Carbernet Sauvignon' and'Queen of Vineyard'(two members of the Western Europe Cultivars Group),'Rizamat'(a member of the East Cultivars Group),'Red Double Taste'(a hybridized cultivar from Vitis vinifera L. and V. labrusca L.),'1103Paulsen','Red Globe'and 'Autumn Royal'(two new hybridized cultivars between cultivars groups which were warmly planted in recent years) were selected. After different drought stress, a combined measurement of gas exchange and chlorophyll fluorescence was conducted to evaluate the effects of drought stress to photoinhibition, as well as the role of photorespiration and xanthophyll cycle in photoprotective mechanism. After photorespiration and xanthophyll cycle were separately inhibited, the complementary effect of these two photoprotective pathways was discussed. Detached leaves of different grapevine cultivars, i. e.'Cabernet Sauvignon','Cabernet Franc','Merlot', and a rootstock,'1103Paulsen'were selected as materials, and photoinhibition degree, photorespiration activity as well as its photoprotective function under drought stress were studied. The results are as follows: 1. Under the same drought stress treatment, different photoinhibition degrees formed in different grapevine cultivars.

本研究選擇不同起源地的葡萄品種－－包括西歐品種群的赤霞珠和葡萄園皇后、東方品種群的里扎馬特自拍播放、歐美雜種紅雙味欧美偷拍99、美洲種砧木1103Paulsen，以及近年來發(fā)展較快的品種群間雜交新品種紅地球和皇家秋天等七個品種盆栽苗A级毛片久久精品免费看，在進(jìn)行不同程度的干旱脅迫處理后插穴影院，利用氣體交換參數(shù)和葉綠素?zé)晒鈪?shù)同步測定的方法，研究干旱對其光抑制程度的影響国产小视频网站，以及光呼吸和葉黃素循環(huán)組分在其光保護(hù)中的作用人人人人插人人干人人操；并在分別抑制光呼吸和葉黃素循環(huán)的基礎(chǔ)上，探討了赤霞珠葡萄兩種光保護(hù)機(jī)制的互補(bǔ)效應(yīng)免费人成在线观看网；同時選擇不同的釀酒葡萄品種赤霞珠国产在线网址、品麗珠、梅鹿輒和砧木1103Paulsen的葉片riAv.viP网站，研究其離體干旱條件下光抑制程度日本拍拍视频、光呼吸活性及其光保護(hù)作用，結(jié)果發(fā)現(xiàn)： 1国产福利91精品一区二区。

These results revealed that the pollen chamber developmental pattern passed through four phases. Firstly, a group of nucellar cells at the micropylar end elongated longitudinally. Thereafter, the uppermost nucellar cells at the micropylar end initiated PCD; and these elongated cells undergoed PCD in a basally and laterally oriented direction to form a cavity.

貯粉室的形態(tài)發(fā)生可分為4個階段：最先是位于珠孔端的幾層珠心細(xì)胞縱向地伸長日韩人成精品视频免费播放在线；接著，珠孔端最頂部的珠心細(xì)胞發(fā)生PCD日韩快播自拍图片在线观看网站；然后6080午夜久草，那些已經(jīng)縱向伸長的珠心細(xì)胞向基地和側(cè)向地依次發(fā)生死亡，產(chǎn)生貯粉室空腔；最后一区二区欧美性爱，珠孔端的珠心表皮細(xì)胞發(fā)生開裂国产亚洲欧美日韩精品A片，形成貯粉室的開口。

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To analyze effect of diclazuril and maduramycin on 18S rDNA of Eimeria tenella, the 18S rDNA of sporulated oocyst of the E. tenella anti-diclazuril strain, the E. tenellaanti-maduramycin strain and the E. tenella drug-sensitive strain were cloned and sequenced, and were compared by using DNAStar 5.0 and RNADraw 1.1, respectively.

為探討抗球蟲藥物地克珠利和馬杜拉霉素對柔嫩艾美球蟲18S rDNA的影響欧洲精品色在线，分別對人工誘導(dǎo)的柔嫩艾美球蟲地克珠利抗藥株、馬杜拉霉素抗藥株和藥物敏感株孢子化卵囊的18S rDNA基因進(jìn)行了克隆測序亚洲欧美日本另类，并通過生物信息軟件進(jìn)行對比差異分析高清日韩精品第一页在线观看网站。

This paper evaluates the water conservation effects of the young forests of the Shelter Belt Program of the Zhujiang Valley from three hydrologic levels of crown canopy, litter layer and soil layer, based on field investigations and measurements.

本文在對珠防工程監(jiān)測樣地調(diào)查、測定的基礎(chǔ)上日本中文在线中文幕，從林冠層深夜在线观看网址、枯落物層和土壤層3個水文層次對珠防二期工程幼林的綜合持水能力進(jìn)行了評價。3 a-4 a生珠防林幼林的綜合持水量在2 355.25-2 457.08 t/hm^2之間国产在线无码一区视频，比荒山高