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61.
62.
为分析富半胱氨酸的分泌蛋白3(cysteine rich secretory protein 3,CRISP3)基因单核苷酸多态性(single nucleotide polymorphism, SNP)位点对柯乐猪繁殖性状的影响,采用Sanger测序法检测250头健康经产柯乐猪母猪CRISP3基因的SNP突变位点,利用SPSS 22.0软件分析SNP位点与柯乐猪产活仔猪数、初生窝重、初生均重、断奶窝重、断奶仔猪数和断奶均重6个指标的关联性。结果显示,在柯乐猪CRISP3基因第4内含子共发现3个SNP突变位点,即g.43796318T>C、g.43796424T>A和g.43796425G>T,均存在3种基因型。g.43796318T>C和g.43796424T>A位点的优势基因型为TT,优势等位基因为T;g.43796425G>T位点的优势基因型为GG,优势等位基因为G。χ2检验显示,g.43796318T>C位点基因型分布符合Hardy-Weinberg平衡状态(P>0.05);g.43796424T>A和g.43796425G>T位点基因型分布均极显著(P<0.01)偏离Hardy-Weinberg平衡状态。3个SNP位点的多态信息含量(PIC)为0.25~0.50,表现为中度多态。连锁不平衡分析显示,g.43796424T>A与g.43796425G>T之间存在强连锁不平衡。关联分析显示,g.43796318T>C位点TT和CC基因型个体的初生窝重和初生均重均显著(P<0.05)高于TC基因型;g.43796424T>A位点TA基因型个体的产活仔猪数、初生窝重和断奶仔猪数均显著(P<0.05)高于TT和AA基因型;g.43796425G>T位点GT基因型个体的产活仔猪数、初生窝重和断奶仔猪数均显著(P<0.05)高于GG和TT基因型。双倍型关联分析显示,双倍型H2H4(CCTAGT)个体的产活仔猪数、初生窝重、断奶仔猪数和断奶窝重显著(P<0.05)高于H1H2(TCTAGT)个体和H2H2(CCAATT)个体;双倍型H2H2(CCAATT)个体的初生均重显著(P<0.05)高于除H4H4(CCTTGG)个体外的其他个体,且其断奶均重显著(P<0.05)高于其他双倍型个体。CRISP3基因第4内含子上的3个突变位点与柯乐猪的6个繁殖性状均存在显著关联,可作为柯乐猪繁殖性状选择的候选分子标记。 相似文献
63.
基于空间计量模型的安徽城镇化发展与农民增收实证分析 总被引：1，自引：0，他引：1
运用探索性空间数据分析方法测算安徽省农民收入与城镇化发展的空间自相关性和局部集聚空间格局演变,在此基础上分别建立2000年和2010年城镇化发展与农民收入关系的空间杜宾模型和空间滞后模型,研究城镇化发展对农民增收的影响程度和变化趋势。结果表明,安徽农村居民收入存在正的空间自相关性,低收入集聚区自安徽西部向西北部转移,高收入集聚区随皖江城市带\"两点一轴线\"蔓延;城镇化发展在局域呈现以淮北为\"极点\"和巢湖为\"洼地\"的格局;运用空间计量模型分析显示农民收入空间溢出效应能够显著促进农民增收,避免经典回归忽视空间因素导致对影响程度的高估,城镇化发展有助于农民增收,2010年较2000年作用程度增长188.67%,对工资性收入增长的带动作用更强,而农业产业结构单一不利于农民收入提升,特别是缺少非农就业机会,制约农民工资性收入增长。 相似文献
64.
测定四川平武地区5个不同样点的15群东方蜜蜂（Apis cerana）的38个形态特征。同该地区的四川九寨沟、冕宁、西昌、会理以及甘肃岷县、临潭的东方蜜蜂的形态数据进行因素分析、主成分分析、聚类分析以及相关性分析。结果表明：这些地区的东方蜜蜂呈现3个主要类群。该地区东方蜜蜂的个体大小与海拔和纬度相关性显著,喙的颜色、小盾片的颜色和绒毛覆毛长度与海拔相关性显著。 相似文献
65.
按照榨菜的正常播种时间和生长季节,连续3 a对榨菜移栽苗、返青苗、榨菜茎膨大初期、膨大期、成熟期及雨水节后期按GB/T 15401-94方法进行了硝酸盐含量的测定,从900多个检测数据中发现了硝酸盐蓄积量从移栽到成熟过程中的分布规律. 相似文献
66.
67.
TAN Yin-ling 《园艺学报》2004,20(9):1729-1733
The ubiquitin-dependent 20s/26s proteasome system is the capital pathway of exo-lysosome proteolysis within eukaryotic cell. Under conditions of denervation, starvation, glucocorticoid, infection, tumor, burn and so on, the proteasome system was stimulated to degrade protein, which results in muscle lose fast. Glucocorticoid, insulin, thyroid hormone, TNFα and IL-1β play important roles in the regulation of muscle protein degradation and the proteasome system. Inhibition or activation of the proteasome system was approved to be a novel means of treatment with cachexia and negative nitrogen balance. 相似文献
68.
CHENG Shao-bing TAN Dun-yong CHEN Xiao-lin YANG Hao-zhuang ZHANG Sui-mei YAN Liang 《园艺学报》2000,16(5):397-400
AIM and METHODS:To clarify the role of inducible nitric oxide synthase (iNOS) in the regulation of blood pressure,in the present study, we examined the effect of aminoguanidine (AG), a selective inhibitor of iNOS on the hemodinamical response of Dahl salt-sensitive (DS) and Dahl salt-resistant (DR) rats to low (0.3%) or high (8%) sodium chloride (NaCl) infusion by chronical in vivo hemodynamic experiment, and the effect of NaCl or NaCl plus AG infusion on urinary nitrate (NO3)/nitrite (NO2), the end product of nitric oxide (NO), excretion by Greiss Reaction. Furthermore, NOS activity assay was also carried out to probe the effect of NaCl and AG on calcium-dependent or independent NOS activity in renal tissue. RESULTS:1. High or low NaCl-infused DR rats and low NaCl-infused DS rats have no hemodinamical response to AG, however, the hypertensive effect of high NaCl (8%) infusion on DS rats were greatly amplified by co-infusion of AG. 2. Administration of high NaCl significantly elevated the iNOS activity of renal tissue, and greatly increased urinary NO3/NO2 excretion. CONCLUSION:Inducible NOS is an important modulator of arterial pressure, especially in case of higher blood pressure. 相似文献
69.
JIN Bei-fang LU Qin-zhen ZHANG Yan CUI Ya-lan QIANG Zheng LIAO Man-xi TAN Hui-yuan LIU Fang 《园艺学报》2000,36(9):1625-1630
AIM To explore the effects of oxidative stress and inflammatory response on kidney injury induced by hyperthyroidism in mice. METHODS Forty male Kunming mice were randomly divided into control group （n =20） and L-thyroxine （T4） group （n =20）. The mice in T4 group were intraperitoneally injected with T4 diluent at a dose of 1 mg/kg to induce hyperthyroidism, and those in control group were injected with normal saline of the same volume. After 7 weeks, the mice were weighed and dissected, the kidneys were removed and weighed, and the length of tibia was also measured. The activity of superoxide dismutase （SOD） and the content of malondialdehyde （MDA） in the kidney tissues were detected. The pathological changes of the kidney tissues were observed by HE staining. The levels of 4-hydroxynonenal （4-HNE）-modified proteins, interleukin-1 receptor-associated kinase 1 （IRAK1） and tumor necrosis factor receptor-related factor 6 （TRAF6） were determined by Western blot and immunohistochemistry. RESULTS Compared with control group, the body weight of the mice was decreased, while the kidney size and weight were increased significantly in T4 group. In addition, the ratios of kidney weight/body weight and kidney weight/tibia length were also increased （P <0.05）. In T4 group, the renal tubules were enlarged, and the epithelial cells of renal tubules were swollen and exfoliated, with vacuolar degeneration. Furthermore, reduced SOD activity, and increased MDA content and 4-HNE-modified proteins were found in T4 group, all of which were related to oxidative stress （P <0.05）. The levels of inflammation-related proteins IRAK1 and TRAF6 were significantly increased in T4 group （P <0.05）. CONCLUSION Excessive T4 may lead to kidney hypertrophy and injury in mice, and the mechanism may be related to oxidative stress and inflammatory response. 相似文献
70.