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The young barrister had brought a couple of dogs with him; and the country gentleman who gave fifty pounds for a pointer, and travelled a couple of hundred miles to look at a leash of setters before he struck a bargain, laughed aloud at the two miserable curs; one of which had followed Robert Audley through Chancery Lane and half the length of Holborn; while his companion had been taken by the barrister vi et armis from a costermonger who was ill-using him.

年轻的大律师带来一对小狗;那位曾经花五十英镑买一头短毛大猎犬,而且居然在成交之前长途跋涉二百英里去瞧三头一组的塞特种猎狗的乡绅,如今大声嘲笑那两头可怜巴巴的杂种狗了。一头跟着罗伯特·奥德利穿过大法官法庭巷,走了霍尔邦的一半路程;而它的同伴,乃是大法官从一个虐待它的、叫卖水果的小贩手里vietarmis①夺过来的。

The stalls were crammed haphazardly along the street—silver jewelery next to flat wedges of salt cod, wooden barrels of gleaming olives, hand-woven baskets, cinnamon and saffron and vanilla, cloudy bunches of gypsophila, a cardboard box full of mongrel puppies, lurid Johnny Hallyday T-shirts, salmon-pink corsets and brassières of heroic proportions, rough country bread and dark terrines.

摊位沿街一字儿摆开,五彩缤纷――卖银饰的摊子隔壁卖的是腌鳕鱼,再过去,有一木桶一木桶的新鲜橄榄,手织的毛毯,肉桂,番红花和香草,一捆一捆的曲麦,硬纸盒里蠕动着的杂种小狗,颜色艳而不俗的运动衫,橙红的束腹,尺码巨大的胸罩,乡村自制的粗面包,深色陶罐等等,可谓应有尽有。

This course systematically describes the structure and function, transmission, expression and regulation, and evolution of genetic materials, covering basis of cytology for inheritance, molecular basis of genetic materials, Mendel's principles of inheritance, linkage and sex linkage, genemutation, variations in chromosome structure and number, quantitative genetics, inbreeding and heterosis, inheritance of bacteria and viruses, extranuclear inheritance, gene engineering, genomics, gene expression and regulation, developmental genetics, population genetics and evolution.

本课程全面系统地介绍遗传物质的结构与功能、遗传物质的传递、遗传物质的表达与调控、遗传物质的进化等,包括遗传的细胞学基础、遗传物质的分子基础、孟德尔遗传、连锁遗传和性连锁、基因突变、染色体结构变异、染色体数目变异、数量性状的遗传、近亲繁殖和杂种优势、细菌和病毒的遗传、细胞质遗传、基因工程、基因组学、基因表达的调控、遗传与发育、群体遗传与进化。

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.

本研究选择不同起源地的葡萄品种--包括西欧品种群的赤霞珠和葡萄园皇后、东方品种群的里扎马特、欧美杂种红双味、美洲种砧木1103Paulsen,以及近年来发展较快的品种群间杂交新品种红地球和皇家秋天等七个品种盆栽苗,在进行不同程度的干旱胁迫处理后,利用气体交换参数和叶绿素荧光参数同步测定的方法,研究干旱对其光抑制程度的影响,以及光呼吸和叶黄素循环组分在其光保护中的作用;并在分别抑制光呼吸和叶黄素循环的基础上,探讨了赤霞珠葡萄两种光保护机制的互补效应;同时选择不同的酿酒葡萄品种赤霞珠、品丽珠、梅鹿辄和砧木1103Paulsen的叶片,研究其离体干旱条件下光抑制程度、光呼吸活性及其光保护作用,结果发现: 1。

Therefore, we selected the 5 genes, as well as SMTN gene related to human cardiovascular diseases, for chromosomal mapping, CDS cloning and analysis, spatio-temporal distribution, mutation riddling, and association analysis with production traits of 3 porcine populations. We expect to know the structure and function of these 6 genes primarily, and supply data for porcine marker assistant selection of improving meat production.

因此,本研究选择NADH呼吸链相关基因,以及与人类心血管疾病相关的SMTN基因,以猪的骨骼肌为研究对象,用人×仓鼠体细胞杂种克隆板进行6个基因的染色体定位、CDS克隆和序列分析、用半定量RT-PCR进行时空表达谱分析、进行突变位点的筛选、并利用3个猪群的产肉性状资料进行基因型与性状的关联分析,以期初步了解这些基因的结构和功能,并为改进猪产肉性能的标记辅助选择提供资料。

The genetic behavior of these QTLs were investigated accordingto the performance of backcrosses.

5对以IR24为遗传背景的一套籼型渗入系进行了三地两年的详细考察,初步确认了各渗入系中所携带的渗入片段对抽穗期、株高、穗数、实粒数、总粒数、千粒重、单株重和结实率等性状的影响,并初步定位了11个重要农艺性状和产量性状QTLs,估算了这些QTLs的遗传效应,并在回交和测交中进一步确定了这些QTLs的遗传行为,讨论了渗入系在QTL精细定位与杂种优势机理研究中的应用。

High molecular weight glutenin subunits 14+15 and 5+10 with good quality properties were introduced into the parents of high-yielding hybrid wheat XZ1 through biochemical marker assisted selection and greenhouse backcrosses breeding,and then gained hybrid wheat with 5+10,14+15,and pyramided 5+10 and 14+15 though cross-fertilize between parents with good HMW-GS.

随着社会的发展、人们生活水平的提高和消费意识的改变,品质育种已成为当今小麦育种的主攻目标之一。我国在十五&期间,提出了超级小麦育种&计划,力求产量、品质与环境的协调提高。杂种优势是生物界普遍存在的一种现象,是大幅度提高作物产量和品质的有效途径[1]。

Fifty-five lines with different Wx genes from the DH population of Yangmai 10/Waxy C, and 12 waxy wheat varieties derived from the crosses or backcrosses of Yangmai 9 as no-waxy parent or recurrent parent with different waxy wheat varieties were used to study the effects of Wx genes on percentage of vitreous kernel. The grain protein content of 12 waxy wheat varieties with floury endosperm from different crosses was also tested.

为了明确Wx基因变异与小麦籽粒胚乳的关系,以玉米花粉诱导扬麦10号(角质胚乳品种,非糯小麦)与糯质供体Waxy C杂种F1产生的不同Wx基因变异类型的55个双单倍体系以及以扬麦9号与不同糯质供体亲本杂交、回交育成的12个糯小麦品系为材料,研究了Wx基因变异对籽粒胚乳质地的影响,同时测定了12个不同来源的粉质胚乳糯小麦籽粒蛋白质含量。

The results showed that: at metaphase I, the homoeologous chromosome pairing among different F1 hybrids ranged from 2.0 to 11.4 bi-valents formed by homoeologous chromosomes per pollen mother cell, and very few multivalents, and even very few bivalents were formed by two chromosomes within one genome rather than homoeologous chromosomes in some PMCs; at anaphase I, all biva-lents were disjoined and most univalents were divided.

结果表明在中期I阶段,这些杂种一代的近缘染色体联会变化很大,每个花粉母细胞中二价体形成的数目从平均2个到11.4个不等,甚至在某些花粉母细胞中,还发现极少的多价体和非部分同源染色体所形成的单基因组内二价体;在后期I时,所有的二价体分离,同时多数单价体也分离,分离的二价体和分离的单价体都移向两极,从而形成两组染色体;因为这时完整花粉母细胞中分离的二价体在两组染色体中总是对应出现,从而根据半二价体上染色体重组的位置可以分析在二价体的四分体时期发生在非姊妹染色体之间的多种染色体交换类型,如单交换、三线双交换、四线双交换、四线三交换和四线多交换。

In this paper, male sterile line of alfalfa was used to be improved with crossing, because the seed production of crossing is low. The affecting factors of seed production of male sterile line of alfalfa and its crossing progenies that are crossed with male sterile lines of alfalfa and good alfalfa that male is fertile were analyzed. The characteristics of female reproductive organs of male sterile line and its crossing progenies are analyzed in cell morphology. The genetic difference of male sterile line and its crossing progenies are analyzed in enzyme protein. The results showed: 1、Rate of podding of nature crossing and fecundity of artificial crossing of the male sterile plant BC1-2 that is the crossing progency of male sterile line of alfalfa and Medicago varia Martin.cv.'Caoyuan No.1'is higher than male sterile lines. Rate of podding of nature crossing and fecundity of artificial crossing of the male sterile plants BC1-19、BC1-21、BC1-22、BC1-23 that are the crossing progencies of male sterile line of alfalfa and Medicago sativa L.cv.

针对苜蓿雄性不育系杂交制种产量低的问题,采用杂交法对苜蓿雄性不育系进行改良,以原苜蓿雄性不育系为轮回亲本与雄性可育优良苜蓿品种杂交,分析苜蓿雄性不育系及其杂交后代种子产量的影响因素,从细胞形态学方面观察和分析杂交后代及原不育系在雌性生殖器官上的变异特点,从酶蛋白水平对杂交后代及原不育系的遗传差异进行分析,初步研究结果如下: 1、苜蓿雄性不育系与草原一号苜蓿的杂交后代不育株BC1-2,以及苜蓿雄性不育系与X′(苜蓿雄性不育系与新疆大叶苜蓿的杂种F1代)的杂交后代不育株BC1-19、BC1-21、BC1-22、BC1-23的天然杂交结荚率和人工杂交制种的结荚率和百粒重均高于原苜蓿雄性不育系。

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