芝麻轻简栽培技术试验初报

通过对芝麻免耕撒播、免耕条播的3种密度试验表明:免耕撒播种植密度为18万株/hm2时能获得较高产量,且高于对照,但差异不显著;纯收入达9912.5元/hm2,较对照增收54.58%。因此,免耕撒播具有轻便、省工、增产、增效的优点。     

世界海洋生物资源开发现状研究

从捕捞和养殖两方面分析了世界各国海洋生物资源开发情况,介绍了几种新型海洋产业,并在此基础上对我国海洋生物资源的开发提出了几点建议。     

三元甘氨酰-L-缬氨酸-铜(Ⅱ)-多吡啶配合物SOD活性及电化学性质

应用改进的氯化硝基四氮唑蓝(NBT)光照还原法研究了甘氨酰-L-缬氨酸-铜(Ⅱ)-多吡啶型配合物:[Cu(Gly-L-Val)(Phen)].3H2O(1)、[Cu(Gly-L-Val)(Tatp)].2H2O(2)、[Cu(Gly-L-Val)(Dppz)].2H2O(3)[其中:Gly-L-Val=甘氨酰-L-缬氨酸;Phen=1,10-邻菲咯啉;Tatp=1,4,8,9-四氮三联苯;Dppz=二吡啶并(3,2-a:2′,3′-c)吩嗪]在水溶液中催化超氧阴离子自由基(O2-.)歧化分解活性,并用循环伏安法研究了配合物的电化学性质.结果表明:3种配合物均具有良好的SOD活性,表观催化速率常数分别为1.03×107、0.96×107和0.79×107L.mol-1.s-1.     

芝麻种质资源茎点枯病抗性鉴定研究

对52份芝麻种质资源的茎点枯病抗性进行了鉴定,结果显示:(1)52份供试种质感病严重,病株率39.05%¹00%,平均87.04%,病情指数为0.30100%,平均87.04%,病情指数为0.30¹.00,平均0.82,没有发现免疫资源;(2)聚类分析表明,感病种质37份,占参试材料的71.15%,抗病种质15份,占28.85%;(3)参试材料中地方种质茎点枯病抗性要优于改良品种(系),且种质间的差异较大;(4)本研究鉴定出来的青麻、丰城白芝麻、赣芝9号等15份抗茎点枯病种质可以在芝麻育种及其抗性改良中加以利用。     

IFN-γR和ER在大鼠下丘脑-垂体-卵巢轴中的共表达

为了探索干扰素-γ受体(IFN-γR)和雌激素受体(ER)在大鼠下丘脑-垂体-卵巢轴中的相互关系,用免疫组化Max Vision双标法,对正常成年雌性SD大鼠下丘脑、垂体、卵巢中IFN-γR和ER共表达情况及分布特点进行了研究。结果表明,IFN-γR和ER双标记阳性细胞广泛存在于大鼠下丘脑多个核团中,并且也分布在垂体和卵巢组织中;IFN-γR阳性产物主要存在于细胞质中,少数为全细胞着色;ER阳性产物主要存在于整个细胞中,部分为核表达。推测γ-干扰素(IFN-γ)和雌激素在大鼠下丘脑-垂体-卵巢轴中,以其各自的受体为介导进行两种物质间的信息传递,以此共同参与机体的神经免疫内分泌调节。     

Genetic variability following selection for scrapie resistance in six autochthonous sheep breeds in the province of Bolzano (northern Italy)

Scrapie is an ovine transmissible spongiform encephalopathy, and its susceptibility is associated with polymorphisms in the prion protein gene (PRNP). Genetic selection is currently the most effective mean for eradication of the susceptible VRQ allele in favour of resistant ARR allele. Maintenance of genetic diversity should be one of the major objectives in breeding programmes, especially in endangered breeds, and genetic information are an excellent alternative to pedigree data where these information are missing. The aim of our study was to determine changes of genetic variability in six native sheep breeds from autonomous province of Bolzano, northern Italy, following simulation of scrapie selection scenarios. A total of 684 rams were investigated for PRNP polymorphisms and for 10 microsatellite loci to estimate genetic variability. Across all loci, a total of 163 alleles were detected with a mean of 10.4 alleles per locus. Average observed (Ho) and unbiased expected (uHe) heterozygosity overall loci were 0.74 and 0.78, respectively, showing a statistically significant deviation from Hardy–Weinberg equilibrium (HWE) in all breeds. This heterozygosity deficit was confirmed by a positive fixation index (Fis), determining a moderate inbreeding in each breed. Simulating a soft selection, where only rams having at least a VRQ allele should be excluded from reproduction, Ho, uHe and Fis values remained almost unchanged, indicating that genetic variability should not be affected by the removal of these individuals. With a mild selection scenario, considering only rams with at least one ARR allele, we observed a decrease in the mean alleles per breed (8.9) and the maintenance of heterozygosity deficiency, except for two breeds, where it was any longer significant. These results showed that selection strategies allowing use of heterozygous as well homozygous ARR rams might be the right compromise to improve resistance to scrapie and to do not dramatically affect genetic variability of these breeds.     

性格双重性与性别二元对立的消解——论《查特莱夫人的情人》

《查特莱夫人的情人》是劳伦斯探讨男女两性关系的一部重要小说, 小说通过描写男女主人公的完美结合表达了他两性理论中理想的男女关系。本文力图展现这种人物性格的双重性, 分析这种双重性的塑造消解了性别的二元对立, 从而达到了这种理想的两性平衡关系。     

Surfer绘制等值线在泰州自动站业务中的应用

等值线已经广泛地应用于气象领域。本文介绍了利用Surfer11.0的主要功能以及对应的.net应用程序的接口,将.net的软件开发能力和Surfer的绘图功能相结合,实现了基于B/S架构的泰州地区的自动站数据的在线绘图。     

基于FLAASH模型的Landsat ETM＋卫星影像大气校正

主要介绍FLAASH大气校正原理及算法,并运用FLAASH大气校正模型对美国旧金山地区ETM＋卫星影像进行大气校正,再对校正前后的影像进行地物光谱曲线分析和NDVI分析评价。研究表明,ETM＋卫星影像经FLAASH大气校正后,较好地消除了大气影响。