共查询到20条相似文献，搜索用时 265 毫秒
1.
SUN Shu-xia LI Jing JIANG Guo-liang CHEN Dong XIE Hong-jiang TU Mei-yan Horticulture Research Institute Sichuan Academy of Agricultural Sciences Chengdu 《（《农业科学与技术》）编辑部》2010,(7)
[Objective] The aim was to study the molecular identification and cultivar fingerprints of Prunus persica (L.) Batsch germplasms.[Method] Sixty peach genotypes,representing China common local cultivars and European samples were screened by microsatellites (simple sequence repeats,SSRs) and Inter-Simple Sequence Repeat (ISSR) markers.[Result] 26 reproducible bands were amplified by Nine SSR primers,and 24 of which were polymorphic; 236 bands were amplified by 30 ISSR primers,and 113 of which were polymorphic.31 genotypes were discriminated with 1-3 distinct polymorphic bands generated from the primers ISSR and SSR.Seven cultivar-specific ISSR fragments and two SSR unique alleles obtained from this study were available to be converted into Sequence Characterized Amplified Region (SCAR) markers.The genetic similarity coefficient (GS) estimated from these molecular data averaged were 0.939 (ranged from 0.856 to 0.983) for ISSR and 0.646 (ranged from 0.240 to 1.000) for SSR,respectively.The combined grouping association indicated that most local Chinese peach cultivars and exotic accessions were clustered together.This could be related to the mode of introduction and maintenance of the peach cultivars involving limited foundation germplasm,exchange of cultivars between plantations,and periodic development of new recombinant cultivars following sexual reproduction.[Conclusion] The results obtained in this work would help to improve the conservation,molecular identification and management of peach germplasm in breeding. 相似文献
2.
LI Ming-yong QIU De-wen ZENG Hong-mei YANG Xiu-fen Institute of Plant Protection CAAS Beijing 《（《农业科学与技术》）编辑部》2008,(1)
[Objective] The research aimed to reveal the functions of NAC and UBA domains in Peat1's thermal stability.[Method] Fusion expression vectors of Peat1 protein and the 3 deletion mutants were constructed.The recombinant plasmids were induced by IPTG and the target proteins(Peat1,Peat1-△CD99,Peat1-△ND49 and Peat1-△ND108)were expressed obtained by AKTA and its thermal stability was analyzed.[Result] The research found that 3 deletion mutants have good thermal stability like Peat1.[Conclusion] The research demonstrated that the coexistence of NAC or UBA domains is not necessary to thermal stability of Peat1 protein,and they may give the protein particular stability structure seperately. 相似文献
3.
代乳料对羔羊生产性能及血液生化指标的影响（英文） 总被引：1，自引：0，他引：1
GUO Ai-wei ZHANG Li XIONG Chun-mei ZHOU Xue-hui MIAO Xiao-lin .Faculty of Conservati Biology Southwest Forestry College Kunming 《（《农业科学与技术》）编辑部》2008,(1)
[Objective] In this study,the performance and blood biochemical indices in lamps fed on milk replacer were researched,the feasibility of early weaned in lamps was discussed.[Method] 37 of 10 days lambs of Suffolk(♂)×XiaoWeiHanYang(♀)were randomly divided into group A,B,C,D for this experiment.Group A,B,C were fed by 3 milk-replacers containing milk for different protein source respectively,and ten lambs in each group;group D(seven lambs)were fed by ewes as the control.The performance and blood biochemical indices of the lamps were determined.[Result] The results showed that the average daily gains of 10-15 days of age was not significantly different between group A and D(P>0.05),the control were higher significantly than the group B,C(P<0.05).The average daily gains of 16-25,26-35 days of age were not significantly different in group A,B,C,D.The daily weight gains of Group A,B,C in 45-55 days of age were higher significantly than the control(P<0.05).Plasma urea nitrogen(PUN)of group B and C were higher than group A significantly(P<0.05);Total protein(TP),Plasma albumin(ALB)and Plasma total amino acid were no significant difference among the other 3 groups(P>0.05).[Conclusion] So,the milk-replacers were available for early-weaned lamb. 相似文献
4.
硫肥施用方式对冬小麦灌浆期籽粒蛋白含量动态的影响(英文) 总被引：1，自引：0，他引：1
[Objective] The experiment aimed to provide a theoretical base of optimal cultivation management for the high yield and good quality and high efficiency of winter wheat.[Method] The effects of two sulfur fertilizer application methods on dynamic changes of grain protein content and glutenin content of Yumai 49 and Yumai 66 during wheat grain filling stage were studied under the field conditions. [Result] Both the grain protein and glutenin content of two cultivars were increased by sulfur fertilizer, particularly, the effects on Yumai 49 were more significant.[Conclusion] The grain content and glutenin content of different wheat cultivars could be increased by taking different sulfur fertilizer application methods. 相似文献
5.
利用18个微卫星座位对剑尾鱼RR-B系遗传质量的分析(英文) 总被引：1，自引：0，他引：1
[Objective] The study aimed to further understand the genetic quality of Xiphophorus helleri RR-B strain and estimate the feasibility of microsatellite markers in genetic monitoring of aquatic laboratory animals.[Method] Eighteen microsatellite loci which had polymorphism in wild X. helleri were used for genetic quality analysis of RR-B strain (red eyes and red body) by PCR. [Result] All these 18 microsatellite loci displayed single allelic gene band in 30 individuals of X. helleri RR-B strain and the average homozygote rate reached 100%. [Conclusion] These loci could be used as markers in genetic monitoring of X. helleri RR-B strain, which had obtained fairly high genetic homozygosity by inbreeding for more than 20 generations. This study provided basic data for establishing the molecular genetic monitoring standard of aquatic laboratory animals. 相似文献
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仔猪痢清对动物细胞免疫功能影响的研究(英文) 总被引：1，自引：0，他引：1
[Objective] The study aimed to explore the effects of Zizhuliqing Oral Liquid on animal cellular immune function.[Method] MTT method and phagocytizing natural red method were used to determine the effects of Zizhuliqing Oral Liquid on piglet lymphocyte transformation and the phagocytosis of mouse peritoneal macrophages respectively.[Result] The lymphocyte transformation rates of piglets in medicated groups were significantly higher than that in control group;the difference of mouse peritoneal macrophage activities between the medicated groups and the control group was obvious.[Conclusion] Zizhuliqing Oral Liquid could promote the transformation of piglet T lymphocytes induced by ConA and the phagocytosis of mouse peritoneal macrophages to natural red,indicating its good immune enhancement function. 相似文献
7.
橡胶延长因子基因的原核表达及其多克隆抗体的制备(英文) 总被引：5，自引：1，他引：5
[Objective] The aim of this study was to prepare the recombination protein of rubber elongation factor and its polyclonal antibodies.[Method] The encoding gene of rubber elongation factor(REF)was amplified by RT-PCR,and cloned into the prokaryotic expression vector pDEST17 to transform into Escherichia coil BI2I-AI.The recombinant protein induced by L-Arabinose was purified by the affinity chromatography.As the immunogen,the recombination protein was used to immunize mice for preparing polyclonal antibodies,while ELISA and Western blot hybridization were used to detect the titers and specificity.[Result] The purified recombination protein of REF with high expression was used to immunize house mice for preparing polyclonal antibodies with high titer and specificity.The western blot hybridization showed that the antibody could recognize the natural REF from latex.[Conclusion] The recombination protein of REF was successfully obtained and the mouse anti REF antibody with high titer and specificity was prepared,which lays a basis for further studies on biological functions of rubber elongation factor and other membrane proteins in rubber particles. 相似文献
8.
《（《农业科学与技术》）编辑部》2008,(4)
[Objective] The aim of this study was to prepare the recombination protein of rubber elongation factor and its polyclonal antibodies.[Method] The encoding gene of rubber elongation factor(REF)was amplified by RT-PCR,and cloned into the prokaryotic expression vector pDEST17 to transform into Escherichia coil BI2I-AI.The recombinant protein induced by L-Arabinose was purified by the affinity chromatography.As the immunogen,the recombination protein was used to immunize mice for preparing polyclonal antibodies,while ELISA and Western blot hybridization were used to detect the titers and specificity.[Result] The purified recombination protein of REF with high expression was used to immunize house mice for preparing polyclonal antibodies with high titer and specificity.The western blot hybridization showed that the antibody could recognize the natural REF from latex.[Conclusion] The recombination protein of REF was successfully obtained and the mouse anti REF antibody with high titer and specificity was prepared,which lays a basis for further studies on biological functions of rubber elongation factor and other membrane proteins in rubber particles. 相似文献
9.
[Objective] The aim of this study was to prepare the recombination protein of rubber elongation factor and its polyclonal antibodies.[Method] The encoding gene of rubber elongation factor(REF)was amplified by RT-PCR,and cloned into the prokaryotic expression vector pDEST17 to transform into Escherichia coil BI2I-AI.The recombinant protein induced by L-Arabinose was purified by the affinity chromatography.As the immunogen,the recombination protein was used to immunize mice for preparing polyclonal antibodies,while ELISA and Western blot hybridization were used to detect the titers and specificity.[Result] The purified recombination protein of REF with high expression was used to immunize house mice for preparing polyclonal antibodies with high titer and specificity.The western blot hybridization showed that the antibody could recognize the natural REF from latex.[Conclusion] The recombination protein of REF was successfully obtained and the mouse anti REF antibody with high titer and specificity was prepared,which lays a basis for further studies on biological functions of rubber elongation factor and other membrane proteins in rubber particles. 相似文献
10.
Maintenance and management of genetic diversity of farm animal genetic resources (AnGR) is very important for biological, socioeconomical and cultural significance. The core concern of conservation for farm AnGR is the retention of genetic diversity of conserved populations in a long-term perspective. However, numerous factors may affect evolution of genetic diversity of a conserved population. Among those factors, the genetic architecture of conserved populations is little considered in current conservation strategies. In this study, we investigated the dynamic changes of genetic diversity of conserved populations with two scenarios on initial genetic architectures by computer simulation in which thirty polymorphic microsatellite loci were chosen to represent genetic architecture of the populations with observed heterozygosity (Ho) and expected heterozygosity (He), observed and mean effective number of alleles (Ao and Ae), number of polymorphic loci (NP) and the percentage of polymorphic loci (PP), number of rare alleles (RA) and number of non-rich polymorphic loci (NRP) as the estimates of genetic diversity. The two scenarios on genetic architecture were taken into account, namely, one conserved population with same allele frequency (AS) and another one with actual allele frequency (AA). The results showed that the magnitude of loss of genetic diversity is associated with genetic architecture of initial conserved population, the amplitude of genetic diversity decline in the context AS was more narrow extent than those in context AA, the ranges of decline of Ho and Ao were about 4 and 2 times in AA compared with that in AS, respectively, the occurrence of first monomorphic locus and the time of change of measure NP in scenario AA is 20 generations and 23 generations earlier than that in scenario AS, respectively. Additionally, we found that NRP, a novel measure proposed by our research group, was a proper estimate for monitoring the evolution of genetic diversity in a closed conserved population. Our study suggested that current managements of conserved populations should emphasize on initial genetic architecture in order to make an effective and feasible conservation scheme. 相似文献
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本试验采用垂直板聚丙烯酰胺凝胶电泳技术，检测了白香猪群体的血液中血红蛋白(Hb)，转铁蛋白(Tf)，后白蛋白(Po)，后转铁蛋白(Ptf）4个蛋白座位的多态性。其中Tf、Po、Ptf发现了多态。计算了群体多样性指数和平均位点杂合度，以及群体内亲缘小组之间的欧氏几何遗传距离。表明该群体具有一定的纯度，但遗传变异性仍较大。 相似文献
13.
［目的］了解藏獒血液蛋白基因座的遗传变异状况,为藏獒品种资源保护及合理开发利用提供理论依据。［方法］采用不连续垂直板聚丙烯酰胺凝胶电泳技术,对河曲藏獒、青海藏獒、青海藏狮犬和青海土种犬共4个群体103只犬的7个血液蛋白基因座（Tf、Po、Sα2、Hb、Alb、Pr、Amy）的多态性进行研究,并分析不同群体的群体内遗传变异。［结果］ 4个犬群中,Tf、Po和Sα2 3个基因座上存在多态性,其中Tf和Po分别由3个等位基因控制,Sα2 由2个等位基因控制,Hb、Alb、Pr和Amy基因座均呈现单态;藏獒群体的有效等位基因数（Ne）和Nei氏平均预期基因杂合度（H）分别为1.532 4和0.230 3,均高于其他犬群。［结论］ 藏獒群体内在血液蛋白位点上存在丰富的遗传变异。 相似文献
14.
白香猪血液蛋白多态性与若干性状表现的相关性 总被引：2，自引：1，他引：2
采用垂直板聚丙烯酰胺凝胶电泳技术，检测了白香猪群体的血液中血红蛋白（Hb)，转铁蛋白（Tf)，后白蛋白（Po)，后转铁蛋白（Ptf)4个蛋白座位的多态性。其中Tf、Po、Ptf发现了多态性而Hb没发现多态性。用方差分析的方法检测了各种基因型猪生产性能方面的差异，结果显示Po、Tf各种基因型之间的体长、体高无差异（P＞0．05）。Ptf的AA型的体长长于AB（P＜0．05），而2基因型之间的体高差异不显著（P＞0．05）。因此Ptf的多态性与香猪某些体尺性状之间存在一定的相关性。 相似文献
15.
本研究采用聚丙烯酰胺凝胶电泳(PAGE)法检测了松辽黑猪28个样本的13个血清蛋白(酶)位点。结果表明:除Alb、Pa2、Cp为单态外,Pa1、Po1、Po2、Tf、Ptf、Akp、Hpx、Am1、Am2、Es均存在多态性,分别受2～4个等位基因控制。卡方检验结果表明,Pa1、Pa2、Ptf、Akp不处于Hardy-Weinberg平衡状态,其余的Po1、Po2、Tf、Am1、Am2、Hpx、Es都处于Hardy-Weinberg平衡状态。松辽黑猪群体内有效等位基因数、遗传杂合度、以及遗传均质度分别为2.077 9、0.508 3和0.128 8。 相似文献
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[目的]探索延边黄牛与草原红牛钙蛋白酶I（CAPNl）基因4685位点对肉质嫩度的影响。[方法]采用PCR—RFLP技术对草原红牛、延边黄牛CAPNl基因第14内含予区4685位点进行基因多态性与肉质嫩度进行分析,验证该位点在吉林省地方品种牛中的作用。[结果]该位点与肉质嫩度相关检测指标（蒸煮损失、肌纤维直径、剪切力、滴水损失等）密切相关,均表现为T等位基因的存在能够显著提高个体的嫩度水平,但该位点与pH无关。4685位点与屠宰性状（净肉重、胴体重、净肉率等）无关,仅与眼肌面积存在一定的相关性。[结论]延边黄牛与草原红牛CAPNl基因4685住点与肉质嫩度存在密切相关。 相似文献
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[目的]探索延边黄牛与草原红牛钙蛋白酶I(CAPN1)基因4685位点对肉质嫩度的影响。[方法]采用PCR-RFLP技术对草原红牛、延边黄牛CAPN1基因第14内含子区4685位点进行基因多态性与肉质嫩度进行分析,验证该位点在吉林省地方品种牛中的作用。[结果]该位点与肉质嫩度相关检测指标(蒸煮损失、肌纤维直径、剪切力、滴水损失等)密切相关,均表现为T等位基因的存在能够显著提高个体的嫩度水平,但该位点与pH无关。4685位点与屠宰性状(净肉重、胴体重、净肉率等)无关,仅与眼肌面积存在一定的相关性。[结论]延边黄牛与草原红牛CAPN1基因4685位点与肉质嫩度存在密切相关。 相似文献
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采用不连续垂直板聚丙烯酰胺凝胶电泳技术,对河曲藏獒、青海藏獒、青海藏狮犬和青海土种犬共4个群体103只犬的9个血液蛋白基因座(Tf、Po、Es-1、Es-2、Sα_2:、Hb、Alb、Pr、Amy)的多态性进行了检测,分析了两个藏獒群体的群体内和群体间的遗传变异,并以Nei氏标准遗传距离(D)为基础用UPGMA法探讨了不同犬群之间的遗传关系.结果表明,在4个被测犬群中,Tf、Po、Es-1、Es-2和Sα_2 5个基因座上存在多态性,其中Tf、Es-1和Po分别由3个等住基因所控制,Es-2和Sα_2,分别由2个等位基因所控制,而Hb、Alb、Pr和Amy基因座均呈现单态;河曲藏獒群体内遗传变异较青海藏獒丰富,而两个藏獒群体间的遗传分化程度很低(G_(ST)=0.0187);以Nei氏标准遗传距离(D)为基础的UPGMA法聚类结果表明.青海藏獒与青海藏狮犬和青海土种犬的遗传关系近于河曲藏獒. 相似文献
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本试验采用淀粉凝胶、醋酸纤维薄膜和聚丙烯酰肢凝胶电泳法测定了海南牛、雷州牛和隆林牛的血红蛋白、血清白蛋白、血液碱性磷酸酶,血清转铁蛋白、血清后转铁蛋白和血清后白蛋白等6个多态位点的基因型和基因频率。为分析华南黄牛在中国黄牛中的地位,利用有关资料,计算了我国10种黄牛间的遗传距离;用类平均法对我国的主要黄牛品种进行聚类分析,绘出10个品种的树状聚类图;用主分量分析方法绘出各品种的三维空间分布图。结果表明,华南黄牛明显与北方及中原黄牛不同,华南地区黄牛是华南地区固有的品种,由当地驯化而来,形成过程渗入其他黄牛血液的结果。 相似文献