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And it also showed that the inheritance of the growth-rate and pathogenicity to cotton seedlings of XC-6 could not be inherited steadily in zoospore progenies and oospore progeny, but the colony morphology and homothallic character of XC-6 could inherited steadily in both asexual and sexual progenies, which suggested that the inheritance and variation of the above characters might be related to long-selfing and hybridization in species.

同时，XC-6生长速率、对棉苗的致病力、菌落形态及同宗配合遗传和变异特性研究表明，其生长速率和对棉苗的致病力性状在单游动孢子后代和自交后代均不能稳定遗传，但菌落形态和同宗配合特性在单游动孢子后代和自交后代均能稳定遗传，提示上述性状在单游动孢子后代和自交后代的遗传和变异特性可能与菌株长期自交和种内杂交有关。

Microsatellite markers were used to make marker regression analysis on activity of lactate dehydrogenase based on double pseudo-testcross strategy using Windows Map Manager 2.0 software. The parents that came from the cross between progenies of Hebao-cold tolerance red carp and Barbless carp and F2 progenies were used as segregating populations.

利用SSR分子标记结合&拟测交&策略，以荷包红鲤抗寒品系和柏氏鲤远缘杂交所产生F1代为亲本及其F2代为作图群体，应用Windows Map Manager 2.0软件的标记回归法进行乳酸脱氢酶(Lactate dehydrogenase， LDH)活性数量性状基因座单标记定位分析。

Microsatellite markers were used to make marker regression analysis on activity of lactate dehydrogenase based on double pseudo-testcross strategy using Windows Map Manager2.0 software. The parents that came from the cross between progenies of Hebao-cold tolerance red carp and Barbless carp and F2 progenies were used as segregating popula-tions.

利用SSR分子标记结合&拟测交&策略，以荷包红鲤抗寒品系和柏氏鲤远缘杂交所产生F1代为亲本及其F2代为作图群体，应用Windows Map Manager 2.0软件的标记回归法进行乳酸脱氢酶(Lactate dehydrogenase， LDH)活性数量性状基因座单标记定位分析。

The results showed that karyotypic type of Ya01-21was 2n=104＝100m+4sm（4SAT）, Chromosome length ratio of the longest and the shortest 4.25, the average arm-ratio 1.35, belonging to 2C type of chromosome. Molecule identified combine with chromosome studied indicated that Ya01-21 was a progenies of Erianthus arundinaceum. following the law of n+n; ITS identify showed that Ya01-21 is a progenies of Erianthus arundinaceum, the somatic chromosome karyotypic type of Ya01-36 was 2n=132＝130m+2sm, Chromosome length ratio of the longest and the shortest 3.94, the average arm-ratio 1.27, belonging to 2B type of chromosome, combining the advance of characters the law of 2n+n can be resumed.

研究结果表明，崖城01－21的体细胞染色体核型公式为2n＝104＝100m+4sm（4SAT），最长与最短染色体的长度比为4.25，平均臂比1.35，染色体属2C型，分子鉴定结合细胞学研究认为其为斑茅的真实后代，其染色体遗传为n+n；崖城01－36经ITS签定为真实杂种，其体细胞染色体核型公式为2n＝132＝130m+2sm，最长与最短染色体的长度比为3.94，平均臂比1.27，染色体属2B型，结合其性状的进展，推断亲本向其传递染色体可能以2n+n的方式进行。

Firstly, cross donor and recipient lines to produce F1; secondly, repeated backcross the F1 individuals and the subsequent progenies with the recipient to recover its genetic background; and thirdly, intercross the backcrossed progenies to fix the introgressed genes in the population.

在标记辅助导入过程中，标记信息既可用于辅助前景选择，即对目标基因携带者的选择，以保证目标基因的正确导入，也可用于辅助背景选择，即对受体基因组的选择，以加快受体遗传背景的恢复。

The analyses of multivariate partial correlation,path,correspondence and genetic correlation of twelve rice quality indexes were performed using Chenghui 448(CH448),5 maintainer lines,the progenies from Basmati 370 backcrossed by Chenghui 448(BC_2F_5) and the hybrids of 5 male sterile lines with the progenies.

米粒延伸性(cooked rice elongation，CRE)是稻米在蒸煮和食用过程中所表现的延展伸长特性，它和直链淀粉含量、糊化温度、胶稠度、香味等米质性状都是蒸煮食用品质综合评定的重要指标。

This paper briefly reviews the research history of the lung cancer due to Radon and its progenies in the past hundreds years,then presents the relationship between risk of lung cancer and radon and its progenies inbreathed by uranium miners.

简要回顾氡致肺癌的长时间认识过程和研究历史，简述了当年铀矿工人和矿工吸入氡及其子体与肺癌发病率的关系，指出环境中氡的危害。

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。

The useful value as crossing parents on the new CP varieties intro- duced in 1980 were detailed studied. The results indicated that their hybrid progenies had the characteristics of early maturing,high sugar content, high yield and excellent ratooning ability. From these progenies,many good varieties,such as Yuetang 83/271,83/251,83/257,had been selected.

较详细研究了1980年引进的运河点甘蔗品种作杂交亲本的利用价值，结果表明杂交后代表现早熟、高糖、丰产、宿根性好，从中选育出如粤糖83/271、83/257、83 /251等优良的甘蔗新品种。

Northern blot analysis showed that the GFP gene was correctly expressed in the transgenic plants. Green fluorescence was observed in roots and immature embryos of transgenic plants by fluorescence microscopy.Progeny analysis showed that GFP insertions were inherited in T_2 generation with normal expression.Both Mendelian and non-Mendelian inheritances were observed in T_1 progenies of transgnic maize,and non-Mendelian inheritances were observed in T_2 progenies.

Southern blot结果表明GFP基因以低拷贝数、简单的方式(1～3条Southern杂交带)整合到玉米基因组；Northern blot结果表明GFP基因在转录水平上表达；在转基因植株的根和幼胚中观察到GFP表达；转基因植株的后代遗传分析表明GFP基因能够遗传至T_2代并正常表达，部分转基因株系中的GFP基因以孟德尔遗传方式传递给T_1代，但T_2代不符合孟德尔分离比。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。