As there are only six parents in the diallel crossing. and one cross combination for genetic effect analyzing, and the datum from the number of regenerating didn't submit to the normal distribution formula even when they were transferred, there may be some aberrancy in the result of this character. Therefore, more experiments and larger samples are needful further to conform, improve or correct this research results later.

7本研究雙列分析的親本僅為6個，世代的基因效應(yīng)分析也僅只有1個組合，可能導(dǎo)致統(tǒng)計分析結(jié)果偏頗久久久丰满老熟妇，還由于性狀胚性愈傷組織綠苗再生數(shù)資料經(jīng)轉(zhuǎn)換后仍不能遵從正態(tài)分布久久免费视频免费看，也會使得該性狀的分析結(jié)果可能有偏差，今后需要用更多的試驗和抽取更大的樣本進行分析研究中老年女人A片，進一步證實av免费在线观看网站大全、完善或糾正本試驗結(jié)果。

The total genetic effect of progeny was obtained by economic weighting genetic effect of these two traits.

通過經(jīng)濟加權(quán)上述兩個性狀的遺傳效應(yīng)來預(yù)測后代的綜合遺傳效應(yīng)国产日韩成人香蕉软件。

The results indicated that:（1） The volume weight, isoleuclne, arginine and glycine are mainly influenced by the additive genetic effect; and protein, lysine, methionine and aspartate by both additive and non-additive effect; while starch, oil and other 10 amino acids by nonadditive effect.

結(jié)果表明：（1）玉米籽粒容重看美女被操久久精品、異亮氨酸、精氨酸和甘氨酸主要受加性基因效應(yīng)影響538视频在线播放欧美；粗蛋白在线人成、賴氨酸、蛋氨酸和天冬氨酸受加性效應(yīng)和非加性效應(yīng)同等影響欧美成三级；粗淀粉免费观看色视频网站、粗脂肪和其余10種氨基酸成份主要受非加性效應(yīng)影響。

稀有物種,生境損失和滅絕(V1) Founder effect This term describes the establishment of a new population by one or a few individual, resulting in low levels of genetic variation and often a disproportionate number of alleles that are rate in the parent population.

Genetic bottleneck 建立者效應(yīng)建立者效應(yīng)描述由一個或幾個個體建立新種群黄色网站男人天堂，導(dǎo)致低水平的遺傳變異和在親本種群中稀少的等位基因的經(jīng)常不成比例的數(shù)量www.操逼.com。

But more and more experimental data and QTL mapping showed that there exist major genes of large genetic effect besides the polygene with samll effect in quantitative traits.

但越來越多的試驗數(shù)據(jù)和QTL作圖結(jié)果表明，控制數(shù)量性狀的基因體系中既有遺傳效應(yīng)較小的微效多基因爽到高潮嗷嗷嗷叫视频软件，又有遺傳效應(yīng)較大的主基因不卡性爱视频。

But the former study was only the identification analysis of the existing of the major gene and polygene, the identification of genetic model and the analysis of genetic effect in major gene and polygene mixed inheritance model of quantitative trait from different animal-plant.

但以往的研究只是對不同動植物主基因-多基因混合遺傳的數(shù)量性狀的主基因和多基因存在的鑒別分析，以及遺傳模型識別和各種遺傳效應(yīng)的分析国产专区双飞。

The near isogenic lines containing the S5n allele from different original WCVs . and genetic background from japonica variety Balilla were crossed with 20 indica-japonica varieties representing different ecotypes, the results indicated that genetic effect of S5n from different wide compatibility varieties was not completely same, and that the compatibility power and compatibility spectrum of near isogenic lines carrying S5n from different donors were different.

以不同來源的廣親和品種為供體欧美精品午夜一级、以粳稻品種Balilla為受體的近等基因系與不同秈粳測驗種測交結(jié)果表明，不同起源的廣親和基因S_5~n對雜種育性的遺傳效應(yīng)是不完全相同的久久扭，親和力和親和譜都存在差異国产av一码二码三码无码。

In this study, nine aspects had been carried out, which included the condition optimization of inducing silkworm asexual reproduction; the effective technique of obtaining unfertilized eggs from virginal moth; the investigation of asexual reproductive genetic resources on bivoltine silkworm races; the creating of bivoltine female asexual reproductive lines; the genetic effect analysis of silkworm asexual reproductive character; the eggs protein study on different female lines; growing and developing comparison between asexual reproductive line and its sexual parent; RAPD study on asexual reproductive character; the utilization of asexual reproductive lines.

本論文主要研究內(nèi)容包括：家蠶無性繁殖誘導(dǎo)條件的優(yōu)化；從家蠶處女蛾獲取未受精卵的實用技術(shù)研究丁香六月深婷婷综合五月；二化性家蠶品種無性繁殖特性的遺傳資源調(diào)查中文字幕无码毛片一级；二化性雌蠶無性繁殖系的構(gòu)建；家蠶無性繁殖性狀的遺傳效應(yīng)分析rihanhuangsewangzhan；家蠶無性繁殖品種的蛋白質(zhì)研究婷婷丁香五月综合中文字幕；家蠶無性繁殖品種與其兩性親本生長發(fā)育對比研究；控制家蠶無性繁殖性狀的基因的RAPD分子標(biāo)記探索以及家蠶無性繁殖系的利用研究等九個方面18岁进看的黄色网站，取得的主要結(jié)果如下

Results After six passages in BHK-21 cells, cytopathic effect was observed by microscopy. The rescued virus was rejuvenated once in unweaned mice, and then came back to cell passage. We found that the poly tract of rescued virus was shortened when the virus was passaged twice in BHK-21 cells. Although the data of LD50 in mice and TCID50 in BHK-21 cells showed that the virulence and infectivity of genetic engineering viruses were lower than its parental virus, no significant difference was observed between the genetic engineering viruses with the different length poly tract.

我們發(fā)現(xiàn)火热福利视频导航，基因工程毒在BHK-21上連續(xù)傳代至第6代時，可見明顯的致細胞病變效應(yīng)(cytopathic effect精品欧美日韩一级视频在线观看，CPE)黄色带国产7J8在线观看；在經(jīng)過一代乳鼠接種之后再重新適應(yīng)到BHK-21細胞的過程中大陆精品国产AV成拍色拍，poly區(qū)段出現(xiàn)了縮短現(xiàn)象；乳鼠致病性試驗和BHK-21細胞TCID50測定結(jié)果表明欧洲色综合精品，盡管基因工程毒與母本毒相比毒力偏低舔美女屁眼的视频一区二区，但含有不同長度poly的基因工程毒之間并無顯著差異。

ABSTRACT It is because that the excellent acceptors for maize transgenic engineering are insufficient in our country, especially in the southwest mountain areas of china and hereditary variation regularity for the two characters such as efficiency of embryonic callus induction and number of regenerating plant (these two characters were abbreviated to the nduction efficiency and number of regenerating in the following of the paper, respectively), which hint the maize culturing capacity, is not very clear. Therefore, aiming at picking out superior acceptors, we had made systematic researches on the two characters with combing traditional quantitative-character genetic analyzing methods such as single-factor genetic mating design, diallel crossing genetic design, genetic effect analyzing method and the modern molecular locating method such as QTLs'. The main results are followed.(1) 50 superior inbred lines and about 30 crosses in our country, especially in the southwest of China were used for identifying and selecting the superior genotypes in the above two investigated characters under the same culturing condition in 2000 and 2001. There was very significant difference among the genotypes in the both characters. But the two characters were not certainly related. Some genotypes such as 18-599 and 18-599 were very good in them. For some ones such as zong 31, induction was higher than 18-599 and 18-599 in the efficiency, but it was only 1/3 to the later in regenerating number. In some genotypes such as S37, R08, R15, P138, A318, induction efficiency was just about 3% and scarcely any regenerating plants were got. On the whole, hybrids acted better than inbreeds in the both characters.(2) Two kind of inbreeds were selected as parents of the Griffing's method 1. 18-599 and 18-599 and the inbred line zong 31 are one kind because they are not only superior in the characters of maize cross breeding, such as CA, resistance to disease and the important agricultural characters, but also excellent in transformation characters as the induction and regeneration.

針對我國欧美性爱日韩一区二区、特別是西南山地所需玉米轉(zhuǎn)基因工程育種優(yōu)良受體極為匱乏和反應(yīng)玉米幼胚培養(yǎng)能力的2個主要性狀xigouqi.com，即玉米幼胚胚性愈傷組織誘導(dǎo)率和胚性愈傷組織綠苗發(fā)生數(shù)的遺傳變異規(guī)律十分不清楚的實際情況，本研究從篩選玉米轉(zhuǎn)基因工程所需要的優(yōu)良受體入手久久精久久精久久精品99，采用單因素遺傳交配設(shè)計黄页在线观看网站、雙列雜交遺傳交配設(shè)計、世代基因效應(yīng)等傳統(tǒng)數(shù)量性狀分析方法亚洲永久精品愉拍自拍，以及現(xiàn)代分子標(biāo)記定位主效QTL分析方法看看国产黄片视频在线，對玉米幼胚胚性愈傷組織誘導(dǎo)率和胚性愈傷組織綠苗發(fā)生數(shù)等2個性狀進行了較為系統(tǒng)的分析研究，取得以下主要研究結(jié)果：(1)于2000年和2001年通過對我國久艹精品综合伊人、特別是西南地區(qū)近50份優(yōu)良自交系和近30個雜交組合精品视频网站，在相同培養(yǎng)條件下，對幼胚培養(yǎng)胚性愈傷組織誘導(dǎo)率和胚性愈傷組織綠苗發(fā)生數(shù)等2個幼胚培養(yǎng)能力性狀進行了篩選與鑒定黄色网站上视频，發(fā)現(xiàn)玉米不同基因型具有完全不同的幼胚培養(yǎng)胚性愈傷組織誘導(dǎo)率和胚性愈傷組織綠苗發(fā)生數(shù)，但幼胚培養(yǎng)胚性愈傷組織誘導(dǎo)率與胚性愈傷組織綠苗發(fā)生數(shù)并不具有必然的相關(guān)關(guān)系AAA小黄片，有的基因型国产亚洲丝袜制服，如自交系18-599和18-599在胚性愈傷組織誘導(dǎo)率和愈傷組織綠苗發(fā)生數(shù)等2個性狀都表現(xiàn)相當(dāng)優(yōu)異；有的基因型免费观看的黄色网站在线，如自交系綜31爱爱人人，僅幼胚培養(yǎng)胚性愈傷組織誘導(dǎo)率性狀表現(xiàn)高于19-599和18-599，但在胚性愈傷組織綠苗發(fā)生數(shù)這一性狀則與它們有相當(dāng)大的差距欧美日韩午夜影院人妻，僅為19-599和18-599的1/3左右人人人人操人人人上；有的基因型，如S37日本高清中文字幕、R08同性AV无码免费无禁网站、R15、P138殴美A片免的视频刺激的、A318等玉米自交系不僅幼胚培養(yǎng)胚性愈傷組織誘導(dǎo)率很低欧美在线观看精品，平均僅在3％左右，而且胚性愈傷組織綠苗發(fā)生數(shù)表現(xiàn)也很差永久免费看A片无码不卡网站，基本上沒有分化成苗精品亚洲一区二区三区中文字幕。