马铃薯热激转录因子HsfA3基因的克隆及其耐热性功能分析     

唐锐敏  贾小云  朱文娇  印敬明  杨清 《作物学报》2021,(4):672-683

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钙对苜蓿幼苗抗寒性及相关生理指标影响的研究   总被引：24，自引：4，他引：20  

由继红  陆静梅  杨文杰 《草业学报》2003,12(1):30-33

先用50mmol/L CaCl2浸泡图牧吉苜蓿，公农一号苜蓿种子，蒸馏水处理作对照，之后将其幼苗放在低温下胁迫。结果表明：Ca^2 不但能提高图牧吉苜蓉幼苗的抗寒性，而且，也能提高公农一号苜蓿幼苗的抗寒性，同时，图牧吉苜蓿，公农一号苜蓿的超氧化物歧化酶，过氧化物酶，过氧化氢酶等酶活性及脯氨酸与抗坏血酸含量也得到提高。由此推测，Ca^2 提高图牧吉苜蓿，公农一号苜蓿幼苗的抗寒性可能与Ca^2 提高其超氧化物歧化酶，过氧化物酶，过氧化氢酶等酶活性及脯氨酸与抗坏血酸含量有关。  相似文献   

三阶时滞泛函微分方程解的渐近性     

庾建设 《湖南农业大学学报(自然科学版)》1990,17(3)

本文讨论一类三阶时滞泛函微分方程解的渐近性质,给出了若干解的有界性及解趋于零的判定准则.  相似文献   

Physiological Indices and Selection of Methods on Rapid Identification for Sweet Potato Drought Resistance   总被引：1，自引：0，他引：1  

ZHANG Ming-sheng TAN Feng ZHANG Qi-tang YANG Yong-hua 《中国农业科学(英文版)》2005,4(11):826-832

The relationships between the changes of relative water content （RWC）, malondialdehyde （MDA） contents, superoxide dismutase （SOD） activity and free proline contents in sweet potato leaves, and drought resistant ability under different concentration of polyethylene glycol （PEG） treatment applied at rhizosphere of sweet potato seedlings were studied. A highly positive correlation between RWC and drought resistance （r =0.783, P〈0.01）, a highly negative correlation between MDA contents and drought resistance （r = -0.848, P〈0.01）, a highly positive correlation between SOD activity and drought resistance （r = 0.777, P〈0.01） was observed. Free proline contents in leaves was not related obviously to the sweet potato drought resistance under 25% PEG treatment. The stronger the drought resistance of variety, the less decrease of RWC and increase of MDA contents, the more increase of SOD activity. By determining these physiological indices in sweet potato leaves under 25% PEG treatment, rapid identification of drought resistant ability of different varieties can be obtained in the lab.  相似文献   

河南省农业综合生产能力的评价研究     

尹红征  李福超  李建民  田建民 《河南农业大学学报》1994,(3)

本文建立了农业综合生产能力的评价指标体系，讨论了两种评价方法，并通过计算机测评系统，对河南省农业综合生产能力进行了系统的测算和分析。  相似文献   

黄刺蛾空间分布型研究及应用   总被引：3，自引：1，他引：2  

彭龙慧  裘有年 《江西农业大学学报》1994,16(1):57-61

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Immunosurveillance and tumorigenesis in BALB/c mice--1. Early reactive state in Peyer's patches.     

V A Toma  F P Retief 《Comparative immunology, microbiology and infectious diseases》1979,2(1):43-53

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The in situ cellular immune response in BALB/c mice Peyer's patches after stimulations with E. coli endotoxin (ECE).     

V A Toma  F P Retief 《Comparative immunology, microbiology and infectious diseases》1979,2(1):31-41

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尿素水平对青山羊血液生化指标的影响   总被引：2，自引：0，他引：2  

方希修  王冬梅  黄秀明  杨在宾  孙存孝 《饲料工业》2004,25(5):20-23

应用饲养试验与氮平衡试验,研究了不同尿素水平的日粮对青山羊血清总蛋白(STP)、血清清蛋白(ALB)、血清球蛋白(GLB)、血清清球蛋白比值(A/G)、血清尿素氮(SUN)及血清谷丙转氨酶的含量变化的影响。试验采用4×4拉丁方试验设计,试验分4个阶段,在基础日粮一致的情况下,采用4、9、14、0(对照)g/kg·DM4种不同的处理,试验结果表明:不同尿素水平极显著影响ALB、SUN浓度和GPT活性浓度(P<0.01),对血清清球比(A/G)无显著差异(P>0.05),尿素水平与STP、GLB浓度存在负相关;血清含氮生化指标STP、ALB、GLB、A/G、GPT、SUN随时间呈动态变化,出现高峰的时间比瘤胃氨浓度出现的时间平均推迟1～2h。进食尿素后,血液生化指标由平稳逐渐缓慢升高到高峰,随后又下降并趋于平衡。  相似文献   

Effects of Medium-chain Triglyceride on Growth Performance and Serum Biochemical Indices in Broilers     

HUANG Deng-gui  LIAO Wen-de  WEN Yuan-kun  ZHUANG Yue-feng  LIU Guo-qiang  HUANG Xiao-liang  HUANG Guan-qing 《中国畜牧兽医》2016,43(7):1761-1765

The study was conducted to investigate the effects of medium-chain triglyceride replacing the soybean oil in the basal diet on growth performance and serum biochemical indices of broilers.One hundred and forty four healthy,similar body weights AA broilers at the age of 14 days were randomly assigned to four groups with six replicates ger group and six broilers per replicate.Groups A,B,C and D were respectively fed with 0,0.6%,1.2% and 2% medium-chain triglyceride substituted the equivalent amount of soybean oil (using corn flour to balance the energy levels in each group) .The test lasted for 28 days and the indexes were measured once every two weeks.The results showed that the average daily gain and average daily feed intake of groups B,C and D were higher than that of group A,and the F/G was lower than group A.The average daily gain of groups C and D at 28 to 42 days old and group D at 14 to 42 days old were significantly higher than that of group A (P < 0.05).The serum glucose,total content of amino acid,total protein and albumin of groups B,C and D at age of 28 and 42 days old were higher than that of group A,while the serum triglyceride,total cholesterol and urea nitrogen levels were lower.The total cholesterol content at 42 days old and triglyceride concentrations at 28 days old of group C were significantly lower than those of group A (P < 0.05).The results indicated that medium-chain triglyceride could raise average daily gain and reduce the total cholesterol content and triglyceride concentrations of broilers,which were useful for improving the growth performance.  相似文献