In the self-bred progenies of autopolyploid,we found that a very few chimaeraexist in the cells of root tips,but most of them had no change in ploidy. We also found13 diploid plants in the experimental plot (ratio is 0.46%) and can be divided into 4categories.

在部分同源多倍體株系的自交結(jié)實后代中，隨機取樣進行根尖染色體檢查91亚洲福利，結(jié)果表明多倍株系體的自交結(jié)實后代倍性沒有變化偷拍福利视频网站，但發(fā)現(xiàn)有個別細胞為不同倍性的嵌合體；田間觀察到分離出來的極少數(shù)正常二倍體韩国无码理论，占0.46％free性video丝袜极品，按照形態(tài)特征可以分成四個不同的類型性爱高清Av。

So, the abnormality of embryo sac was one of the factors that induce low seed setting percentage in autotetraploid rice.

從對13個品種的成熟胚囊育性調(diào)查的結(jié)果來看，同源四倍體水稻胚囊育性是影響其結(jié)實率的原因之一久久无码精品国产。

Study on the pollen fertility and the process of pollen formation and development in autotetraploid rice showed that the pollen fertility was high (78.33%), though many abnormities appeared in this process.

通過對5個品種的同源四倍體水稻花粉發(fā)育過程和13 個品種的花粉育性調(diào)查結(jié)果表明涩视频，同源四倍體花粉平均育性為78.33%，明顯比二倍體（91.85%）低骚虎视频在线观看。

In conclusion, abnormal meiosis of PM-Cs is the cytogenetic causes for fertility reduction of tetraploid melon.

花粉母細胞減數(shù)分裂的異常是同源四倍體甜瓜育性低的細胞學(xué)原因国产会所在线观看。

This may be due to the characteristics of soybean genome,an ancient tetraploid.

這些基因位于10條不同染色體上，F(xiàn)T類基因具有成對排列于同一條染色體的短的區(qū)段的傾向暴操学污在线免费观看视频，TFL1和CEN的4個不同拷貝均位于不同的染色體上欧美狠狠综合精品。7對基因之間同源性高于90%，而且多位于不同染色體上国产A∨丝袜美腿丝袜视频，可能與大豆古四倍體的特性有關(guān)国产农村A片AAA片。4。

The phylogenetic analysis based on the sequences in this region indicated that the y-type HMW glutenin subunits of Agropyron elongatum species were different from other subunits, whereas the x-type subunits of them were most closely related to that from the B genome.

推測四倍體長穗偃麥草中的E1基因組可能起源于二倍體的E基因組又黄又大又硬又色的视频。與來自小麥族的A欧美色色干、B、D和G基因組部分亞基基因的啟動子序列比較表明先黄色网站在线观看，小麥族的這一區(qū)域在進化上是相當(dāng)保守的国产男人资源在线观看网站免费视频，不同基因組來源的序列同源性都在90%以上久亚洲美女视频。

However, analysis of DNA methylation level indicated that the total DNA methylation levels were not significantly different between diploid and autotetraploid. Autotriploid showed a trend of low DNA methylation level. It implied that the alterations of DNA methylation levels were not linear with the autopolyploidy level in watermelon.

有趣地是18福利午夜福利视频少妇，二倍體與四倍體西瓜相比DNA甲基化水準卻未發(fā)生大規(guī)模的調(diào)整，而三倍體西瓜顯示出較為明顯的低DNA甲基化水準趨勢欧美精品在线性爱视频，表明西瓜同源多倍化過程中其基因組DNA甲基化水準變化與其倍性不成線性關(guān)系A片免费网站一区二区。

Thus, the meiotic chromosome cofigurations showed that the tetraploids and hexaploids in C.reticulata allopolyploids, and the appearance of a few tetravalents in some populations might indicatehomology of chromosomes in different genomes to some extent.

根據(jù)減數(shù)分裂的構(gòu)型，我們認為天天操天天，四倍體和六倍體分別為異源四倍體和異源六倍體福利免费试看，少數(shù)四價體的存在表明染色體有部分同源性。

Most primers amplified same bands in diploids, tetraploids and hexaploids. It suggest that D and AB genomes have high homology and D genomes be successfully transferred from diploid to hexaploid.

從供試的絕大多數(shù)引物均能在不同倍性小麥中擴增出相同的條帶證明了D染色體組和AB染色體組間存在著很高的同源性以及利用二倍體和四倍體小麥雜交人工合成六倍體小麥的真實性欧美人和牲口杂交在线观看。

autotetraploid：同源四倍體

二倍體材料經(jīng)過秋永仙堿處理后,一些材料細胞的染色體全部加倍,成為同源四倍體(autotetraploid);一些材料二倍體與四倍體細胞并存出現(xiàn)嵌合體(cytochimaeras)現(xiàn)象;一些材料二倍體、四倍體細胞以及更高倍性的細胞混合而形成混倍體.

autotetraploid：同源四倍體(由二倍體生物的自身染色體組重復(fù)形成)

autotest | 自動檢測程序 | autotetraploid | 同源四倍體(由二倍體生物的自身染色體組重復(fù)形成) | autotetraploidy | 同源四倍性

autotetraploidy：[生]同源四倍性

line recorder mass spectrometer 連續(xù)記錄質(zhì)譜計 | autotetraploidy [生]同源四倍性 | bond dissociation energy 鍵裂解能

autotetraploidy：同源四倍性

autoteraploid同源四倍體 | autotetraploidy同源四倍性 | autotitrator自動滴定儀

autotomize：自行分裂,自割

autotetraploidy 同源四倍性 | autotomize 自行分裂,自割 | autotoxin 自生毒素,自體毒素