Tao Ailin Lin Xinghua Zeng Hanlai Zhang Duanpin
2003, 22(2).
Abstract:扩增片段长度多态性(AFLP)具有灵敏性高、检测位点多等优点,获得高分辨率的胶图是AFLP的关键技术之一。本文借助BioRad公司出品的SequL—GenGT/3000PAC电泳系统,发展了一套分段点样技术,并对银染操作细节及电泳过程中的关键参数进行了一些改进,使AHLP胶图分辨率得到显著提高,泳道及标记带型读取简便、可靠,有效地增加了单板胶的样品数。AHLP的检测效率得到明显提高。
Ji Congliang ) Chu Mingxing ) Chen Guohong ) Zhou Guoli ) Zhu Yan )
2003, 22(2).
Abstract:采用2种限制性内切核酸酶MnlI和只Rsu I,对常年发情的小尾寒羊和湖羊以及季节性发情的多赛特羊和萨福克羊共146只绵羊褪黑激素受体1a(MTNRlA)基因外显子2的824bp扩增产物进行PCR-RFLP分析。结果表明:1)MTNRlA基因外显子2的605位碱基处表现出MnlI酶切多态性。小尾寒羊、萨福克羊和湖羊只出现2种基因型:AB(303bp,236bp/67bp)、1313(236bp/67bp,236bp/67bp):多赛特羊出现3种基因型:AA(303bp,303bp)、AB(303bp,236bp/67bp)、BB(236bp/67bp,236bp/67bp)。2)MTNR1A基因外显子2的604位碱基处表现出只Rsa I酶切多态性。4个绵羊品种都出现3种基因型:AA(290bp,290bp)、AB(290bp,267bp/23bp)、BB(267bp/23bp,267bp/23bp)。X^2适合性检验结果表明,小尾寒羊和多赛特羊MTNRlA基因第二外显子在M22ZI酶切位点没有达到Hardy-Weinberg平衡状态(0.01<P<0.05),萨福克羊和湖羊MTNRlA基因第二外显子在RsaI酶切位点已经达到Hardy—Weinberg平衡状态(P>0.05);4个绵羊品种MTNRlA基因第二外显子在只Rsa I酶切位点都已经达到Hardy-Weinberg平衡状态(P>0.05)。
Li Shengkang Xiong Yuanzhu Deng Changyan
2003, 22(2).
Abstract:AFLP (Amplified Fragment Length Polymorphism) analysis system was established with four pig species. The results of several reactions during AFLP analysis have been detected such as DNA extraction, double enzymes restriction, adadpter ligation, preamplifi
Liang Qiong Yan Yongliang Hou Mingsheng
2003, 22(2).
Abstract:The changes of POD,PPO,and SOD were experimented before and after different varieties of maize were affected by MRDV. The result shows that,after the effect the content of POD and PPO rise,but those of SOD decrease. And those variances show much close re
Zeng Yongsan ) Wang Zhenzhong )
2003, 22(2).
Abstract:测定了具有不同抗性水平的5个豇豆(Vigna sesquipdalis Wight)品种在受锈菌(Uromyces vignae Barcl)侵染前和侵染后若干阶段中外切几丁质酶(exo-chitinase)和β-1,3—葡聚糖酶(β-1,3-glucanase)的活性,并分析其与抗病性的关系。结果表明:在豇豆各品种与锈菌互作的早期,外切几丁质酶比活性均上升,与品种抗病性水平基本一致,其比活性变化率也与品种抗性水平一致,且抗病品种的外切几丁质酶比活性的变化率高峰出现早,而感病品种的高峰出现迟;β-1,3-葡聚糖酶比活性与品种抗性水平也一致,其比活性变化率与品种抗性有较密切的关系,免疫和高抗品种的酶比活性变化率呈上升的趋势,而中抗和感病品种的酶比活性变化率则呈下降趋势。
2003, 22(2).
Abstract:记述了云南省树蟋科Oecanthidae树蟋属Oecanthus 1新种,即郑氏树蟋Oecanthus zhengi。模式标本保存于武汉工业学院。
Li Jianfeng , ) Tian Mingyi ) Gu Dejiu ) Sun Jianghua )
2003, 22(2).
Abstract:研究了葛藤节肢动物中10个主要种群的相互关系。采用Pearson积矩相关分析的结果表明:有9个种对呈极显著相关,有3个种对呈显著相关。以叶蝉类和豆突眼长蝽种对间的关联程度最高,为-0.781,二者均取食叶片,存在着激烈的竞争关系;隐翅虫类和叶甲类种对,其相关系数为0.737,两者之间为极显著的正协变,即随着一个种群的数量上升另一个种群的数量也会跟着上升,二者之间表现为捕食关系。采用Spearman秩相关分析的结果表明:有7个种对问呈极显著相关,2个种对呈显著相关。以叶蝉类和豆突眼长蝽种对间的接相关系数最高,为-0.728,积矩相关分析的结论一致;豆突眼长蝽和筛豆龟蝽之间存在着显著的正协变,相关系数为0.408,二者具有某种程度上的依存关系。
2003, 22(2).
Abstract:土壤 -植物 -大气连续体 (SPAC)中水分传输过程是农田生态系统水分迁移与能量转换中最重要的环节。SPAC尽管介质不同、界面不一 ,但在物理上是一个统一的连续体 ,可以用水势这一统一的能量指标来描述各个环节能量水平的变化。水分从土壤中被作物根系吸收向上一直传输到叶气腔再散失到大气中 ,水势是驱动力 ,水在其中流动的通量与驱动力 (水势差 )成正比 ,与阻力成反比。可见 ,研究SPAC水势分布规律有助于定量计算水流通量 ,并为作物根系吸水和水分散失、作物水分供需评价提供依据 ,而且对调节农田生态水分循环和节水农业措施有重要指导…
Geng Mingjian Wu Lishu Cao Xiangyun Liu Wuding
2003, 22(2).
Abstract:The macronutrient concentration and accumulation in the different parts of floral organ of two cotton cultivars with different boron efficiency were studied in soil culture under the condition of boron deficiency and sufficiency. The N, P and K concentrat
Xu Fangsen Nian Fuzhao Wang Yunhua Meng Jinling
2003, 22(2).
Abstract:The response of ten Arabidopsis ecotypes to boron (B) deficiency was studied with soil cultivation experiment. The obtained results showed that the agronomical traits, such as B content, plant height, the number of branches, of the ten Arabidopsis
Zhou Wenbing Zhu Duanwei Geng Mingjian Lei Hongjun Liu Xin
2003, 22(2).
Abstract:比较了沸石复混肥在蔬菜作物、大田作物上的增产效应。结合油莱在施用沸石复混肥后,不同生育期土壤养分状况和苗期植株养分吸收量的变化,对沸石复混肥缓释氮、磷、钾的效应进行了研究。在此基础上,对复混肥中沸石载体添加比例以及改良酸性土壤的效果及机理进行了探讨。结果表明:施用沸石复混肥,蔬菜作物比大田作物增产效应更为明显;盆栽油莱施用沸石复混肥,在油莱苗期,土壤速效氮、磷、钾养分均有所降低,油莱植株所吸收的养分也相应降低;沸石载体在复混肥中的比例并非越大越好,对油莱而言,10%~15%的含量较为合适;沸石载体复混肥处理比不加载体的对照复混肥处理的土壤pH升高可达0.5个单位以上,交换态锰(以EXC-Mn)含量下降90%以上,从而减轻了施用化肥导致的土壤酸化可能产生的锰、铝毒害,这也是沸石载体复混肥能够使作物增产的内在原因。
Ye Yuzhen Wu Qingjiang Zhou Jianfeng Wang Zhongwei
2003, 22(2).
Abstract:Using irradiative sperm of red common carp as an activator, three groups of thegynogenetic diploid silver carpwere successfully obtained by artificial gynogenesisand spontaneous diploidization.The highest inducing rate of haploid silver carp could be reac
2003, 22(2).
Abstract:于2001年11月至2002年3月对均重为1.78g、5.63g和9.55g3种规格的克氏原螯虾在15℃、20℃、25℃和30℃4种温度条件下的代谢进行了测定,以探讨体重、温度变化及摄食状态对代谢的影响。结果表明,耗氧率(Ro)和NH4^--N排泄率(RN)与温度正相关,与体重呈负相关关系,其关系式可分别表示为:Ro=O.1382e^0.0435t和Ro=O.5706W^-0.2013;RN=0.8127e^0.0223t和RN=0.9243W^-0.1242。不同体重试验虾在不同温度条件下的代谢率差异显著,代谢率随体重的增大而减少,随温度升高而增大。同时,体重和温度对能源物质的供能比有较大影响,随着体重的增加,蛋白质和碳水化合物提供的能量比增大,而脂肪提供的能量比逐步减小:随着温度的提高,蛋白质提供的能量逐步减少。克氏原螯虾(5.06土O.87)g摄食水贩6I和配合饲料后,在饱食状态下耗氧率比饥饿状态下分别提高了47.69%和76.81%,NH4^ -N排泄率分别增加了142.37%和204.33%,表明摄食时蛋白质代谢增加显著。
Wang Liping Xiang Changping Wang Yunhua
2003, 22(2).
Abstract:Nitrate uptake rate and NRA (nitrate reductase activity) were measured for explaining genotypic differences of nitrate content in pak choi. Results showed that the rate of nitrate uptake and NRA differed significantly in different pak choi cultivars. It
Jiang Xiwang , ) Liu Guofeng ) Bao Manzhu )
2003, 22(2).
Abstract:以9个菊花品种为试材,利用6种分化培养基和3种生根培养基,以叶片、茎段为外植体,研究不同基因型、激素组合以及附加不同浓度的AaNQ对高效、快速、经济的再生体系建立的影响。结果表明,最适分化培养基分别为:‘日本黄’:6—BAO.5mg/L NAA0.1mg/L或6—BA2.0mg/L NAA0.5mg/L;‘9718’、‘RH3’、‘寒紫’、‘寒黄’:6—BA2.0mg/L NAAO.5mg/L;‘日本白’:6—BAO.5mg/L NAA0.1mg/L;‘寒红’、‘抗白菊’:6-BA1.0mg/L NAA0.1mg/L;‘五九菊’:6-BA2.0mg/L NAA0.1mg/L。适宜生根培养基为1/2MS 0.1mg/L~0.2mg/L NAA、或0.2ng/L~0.4mg/LLAA、或0.4mg/L~0.6mg/LIBA。AgNO3对不定芽的分化有抑制作用。
2003, 22(2).
Abstract:The effects of treating time and concentration of gibberellin on the time of the first flowering, the blossom flowering, the last flowering,and the period of flowering time of plum blossom planted outdoors were studied from 1998 to 2001. The change of o
2003, 22(2).
Abstract:柑橘资源中 ,不同种、品种或类型间花粉育性变化极大 ,像枳壳 (Poncirustrifoliata)、宜昌橙 (Cit rusichangensis)等花粉育性极高 ,华农本地早育性较低 ,柑橘、脐橙和温州蜜柑花粉量极少 ,且完全不育。在柑橘栽培中 ,花粉不育、低育的品种、类型可以结无籽或少籽果实 ,商业价值极高。导致柑橘花粉不育或低育的主要原因是花粉母细胞 (PMCs)不发育、退化、减数分裂异常或小孢子早期退化等。伏令夏橙 (C .sinensis)是少籽品种、花粉育性较低 ,而Page橘柚 (C .reticulata×C .paradisi)是自花不亲和类型 ,异花授粉时种籽数较多 ,花粉育性高…
Yang Qinjun Huang Yanwen Li Heping
2003, 22(2).
Abstract:Observation on the formation and development of embryo and endosperm of Osmanthus fragrans with stone wax cutting method indicated that the embryo development of sweet Osmanthus was ongrad type. The fertilized egg usually underwent a rest period
Xiao Xinmian Su Youyuan Liao Huanzhong
2003, 22(2).
Abstract:According to the water quality requirement as to breeding turtles in heated environment, the density of oxygen is kept to 3 mg/L or more by improving water quality of front installed and step installed in the breeding water. By all these, the content of
2003, 22(2).
Abstract:根据苏云金杆菌的发酵工艺要求,设计了70L内循环气升式反应器并研究其冷模特性,得出反应器的平均循环时间是每次16.62s,混合时间为38.96s,物料混合达到均匀状态时的循环次数小于3次,最大体积溶氧系数达到101.52h^-1。体积溶氧系数与通气量的关系为KLa=-793.277 352.645Vg-34.726Vg^2 。
2003, 22(2).
Abstract:In this paper, the basic variables related to the annual insurance income in Wuhan City are analysed and a model is constructed to forecast its annual insurance income by means of step regression.
2003, 22(2).
Abstract:Cell division is essential for plant growth and development. Cell division and expansion are critical basis for plant and pottern formation. This paper summarizes recent progresses on cyclins, CDKs and the othercell cycle genes in plants; and the characte
Chen Changfu , ) Chen Xuan ) Chen Chaoran ) Liang Yunxiang ) Wang Jianhua )
2003, 22(2).
Abstract:The research advances in aquatic crustaceans immunologic defence mechanisms and immunoprophylaxis are summarized here. The immune cells exert their defencing functions through phagocytizing and enveloping. Humoral factors such as prophenoloxidase(proPO) a
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