Zeng Yawen ) Shen Shiquan ) Lin Xinghua ) Xu Furong )
2000, 19(5).
Abstract:以云南稻种资源昆明小白谷与大理早籼配制的杂种F2 、F3、F4 、F5和F6等为材料 ,分别在高原粳稻区、籼粳交错区和冬季籼稻区进行强耐冷性籼粳亚种间杂种后代孕穗期的耐冷性研究。结果表明 :(1)昆明小白谷×大理早籼F3、F4 分离群体在不同稻作区每穗实粒数、总粒数与结实率均呈极显著的正相关 ,尤其是昆明点高达 0 .5 86 ~ 0 .776 。 (2 )遗传研究表明 ,可能有 1~ 2对基因影响着籼粳杂种结实率 ,其中有 1对主效基因控制着耐冷基因的表达。利用该群体已选育出了稳定的耐冷性籼粳重组近交系。 (3)不同稻作区不同世代育性分布规律的总趋势是一致的 ,即随着世代的增加耐冷主效基因有累加趋势 ;不同之处在于不同世代的耐冷主效基因和微效基因表达上有差异。 (4 )同世代昆明小白谷×大理早籼杂种后代结实率分布规律为籼粳交错区与冬季籼稻区相似但与与高原粳稻区差异较大。
Li Xiaoling\ Luo Bingshan\ Qu Yinglan
2000, 19(5).
Abstract:How the treatment of seed soaking and seedling spraying with different concentrations BR 120 affects the growth of wheat on different fertility levels has been studied. The results indicates that the treatment of seed soaking and seedling spr
2000, 19(5).
Abstract:对柑桔溃疡菌的离体叶接种检验法进行了研究和技术规范。结果表明 ,离体叶接种法是一种效果直观可靠、操作简便易行的检验溃疡病菌的方法 ,其检测水平可达到 1.5 5× 10 3 -4 cfu/ml;其技术规范为 :供接种的柑桔品种应为甜橙类感病品种 (如脐橙 ) ,供接种的离体叶片以达到定型大小的新梢成叶最佳 ;采用针刺后滤纸片贴敷菌液接种 ,最适孵育温度为 2 8~ 32℃ ,最佳保湿方法为吸水纸保湿法。
Ji Guanghai )) Xu Zhigang ) Zhang Shiguang )
2000, 19(5).
Abstract:RAPD was used to analyze the genetic diversity and virulence phenotypes of Xanthomonas oryzae pv. oryzicola , the bacterial leaf streak pathogen of rice in China. Twenty of 60 used random primers produced consistent and clear banding patterns th
Zhang Fudou Guo Yiqing Xu Hulan Sun Xizhi
2000, 19(5).
Abstract:Greenhouse experiments that using E. crusgalli for biology menstruating material. The influence of soil moisture on the efficacy of herbicides is discussed by the formulation of the herbicides dose and moisture, Which set up using the methods of rotat
Xiong Yousheng , ) Chen Mingliang ) Xiong Guiyun ) Ba Ruixian ) \ Zhang Xingfeng ) Qiao Yan ) Yu Yongxi ) Deng Boer )
2000, 19(5).
Abstract:A sealed automatic successive filtration device was formed by putting a 10 cm long clay filter pipe with diameter of 2 cm upside in a 20 cm tall organic glass tube with diameter of 3.5 cm. The fertilizer was placed in the device and water was input from t
Yi Yongmei ) Xie Zhonghua ) Zhang Dingqing ) Huang Tingwen ) Yang Benli )
2000, 19(5).
Abstract:This paper reports the result of a four year research on growth response of young Larix kaempferi plantations to fertilization.The growth response of Larix kaemperi was significant to the application of NPK.The increments growth of tree height,b
Huang Wei\ He Liyuan\ Cai Chongfa
2000, 19(5).
Abstract:The SFIS (Soil and Fertilizer Information System) for Heshengqiao Town was developed in this study using Visual FoxPro 6.0 in Chinese Windows 98 Operating System. It was based on the data obtained from second Soil General Survey of Hubei Province and the
2000, 19(5).
Abstract:体重 2 2~ 32kg的绵羊 8只 ,单次按 10mg/kg剂量交叉内服氧阿苯达唑和阿苯达唑 ,采用高效液相色谱法检测血清中阿苯达唑 (ABZ)、氧阿苯达唑 (亚砜 ,ABSO)及代谢物阿苯达唑砜 (砜 ,ABSO2 )。绵羊分别内服氧阿苯达唑和阿苯达唑后 ,血清中ABZ低于仪器最低检出限 ,ABSO和ABSO2 的药时曲线下面积 (AUC)两药比较无显著性差异 ,内服氧阿苯达唑分别为 (2 9.34± 11.38)和 (2 1.98± 5 .88) μg/h·ml,内服阿苯达唑分别为 (2 8.86±8.78)和 (2 2 .80± 7.0 3) μg/h·ml。内服后代谢物达峰时间 (Tmax)氧阿苯达唑较阿苯达唑短 ,两药ABSO的Tmax分别为 (7.2 5± 3 .5 7)和 (8.75± 2 .6 1)h ,ABSO2 的Tmax分别为 (11.0 0± 6 .0 5 6 )和 (19.5 0± 8.12 )h(P <0 .0 5 )。内服后代谢物的消除氧阿苯达唑较阿苯达唑快 ,血清中ABSO的平均滞留时间 (MRT)两药分别为 (12 .89± 3 .0 0 )和 (15 .6 6± 2 .34)h(P <0 .0 1) ,ABSO2 分别为 (17.93± 3.2 5 )和 (19.2 7± 5 .0 8)h。本项研究表明 ,绵羊内服氧阿苯达唑和阿苯达唑后 ,两药代谢物的吸收程度相近 ,吸收和消除速度氧阿苯达唑则较阿苯达唑快
Zhou Yanqin Yao Baoan Xia Xueshan Zhao Junlong Sun Ming Yu Ziniu
2000, 19(5).
Abstract:将人工感染日本血吸虫尾蚴45d的家兔主动脉灌注冲虫获得成虫,经Earle′s液洗涤,加入细胞培养板内,用含10%牛血清的RPMI-1640培养液于37℃、5%CO2培养箱中培养,苏云金杆菌B-001、E-002提取的伴胞晶体毒素,以不同浓度加入到各孔中。24h后成虫运动缓慢,并有部分死亡,随着伴胞晶体毒素作用时间的延长,成虫的死亡率也增加。当毒素总蛋白含量为117.29μg/ml时,经菌株B-001晶体毒素作用的成虫死亡率在24h时为87.74%,48h时为100%,LD50分别为21.42μg/ml、9.77μg/ml;经菌株E-002晶体毒素作用的成虫死亡率在24h时为86.18%,在48h时为100%,LD50分别为33.16μg/ml、13.19μg/ml。这表明两种苏云金杆菌晶体毒素均对血吸虫成虫有杀
Chu Mingxing ) Wu Changxin ) Zhang Jiansheng ) Gu Jianping ) Sun Shiquan )
2000, 19(5).
Abstract:对二花脸猪、大白猪、杂交1代和回交1代4个群体共计338窝产仔数的资料进行了加性-显性遗传模型以及基因效应的研究。联合尺度检验法的结果表明:猪总产仔数和活产仔数的群体平均值分别为12.78%和12.21,二花脸猪总产仔数和活产仔数基因加性值比大白猪分别高2.78头和2.53头,二花脸猪高的总产仔数和活产仔数基因对大白猪等位基因均为显性,显性度分别为0.92和0.95。适合性检验结果表明窝产仔数(总产仔数和活产仔数)符合加性-显性遗传模式。
Chen Mingyong\ Zhao Deming\ Gao Qiyu\ Qiao Jian
2000, 19(5).
Abstract:The morphological and functional changes of the bursal epithelia of the chickens infected with IBDV VE were studied. The results showed that the microvilli of the bursal epithelium reduced in number and size. Loss of surface epithelium led to extensive
Li Jiakui Guo Dingzong Wu Jianguang Yang Shijin Cheng Dachi
2000, 19(5).
Abstract:对肺动脉高压肉鸡、腹水肉鸡和正常肉鸡的血清、肺和肝的NO含量及某些酶活性的变化进行了比较。结果表明:肺动脉高压肉鸡的血清、肺和肝的NO含量显著高于正常肉鸡,差异显著(P〈0.05);腹水肉鸡肝NO含量显著高于正常肉鸡(P〈0.05),血清和肺的NO含量与正常肉鸡无差异(P〉0.05)。肺动脉高压肉鸡血清的GPT、LDH-L的活性高于正常肉鸡(P〈0.05),腹水肉鸡与正常肉鸡无差异(P〉0.05);血清CK、AKP的活性3组之间无差异。
Chen Changfu Luo Yuliang Zeng Yanxiong\ Wei Fubing
2000, 19(5).
Abstract:Lipopolysaccharide (LPS) was extracted from Cytophaga columnaris of three different serotypes. The protein content and composition were measured. Antigenicity was compared by inoculating mandarinfish ( Siniperca chuatsi ). The results showed that th
Zheng Guangming ) Wei Qingshan )
2000, 19(5).
Abstract:研究了武昌南湖圆背角无齿蚌繁殖习性 ,该蚌为雌雄异体 ,雌雄性比为 1∶1 .1 61 5,各月、各龄雌雄性比与其自然性比有显著的适合性 ;1 龄性成熟 ,4~ 8月中旬为繁殖期 ,5月为繁殖高峰期 ,产卵适宜水温为 1 9.9~ 30 .8℃ ,繁殖高峰期的平均水温为 2 3℃ ;平均怀胚量约 6.8× 1 0 5,5月怀胚率最高 ,达82 .46%。卵细胞分批成熟 ,分批排放 ;育儿囊中的钩介幼虫大小 (壳长×壳宽×绞合部宽 )为 1 78μm× 1 57μm× 1 2 2 μm。
Wang Liping Xiang Changping Wang Yunhua
2000, 19(5).
Abstract:The result of measuring the nitrate content in vegetables in Wuhan in summer season showed that nitrate pollution of vegetables in Wuhan was serious. Factors affecting nitrate accumulation in vegetables were discussed and some measures to control vegeta
Wang Pengcheng ) Zhuang Erqi ) Tu Bingkun ) Zhou Zhixiang\ Liu Xiaoyu ) Tao Tiequn )
2000, 19(5).
Abstract:Based on the Markov theory, the growth process of masson pine plantation was simulated on the data of different densities masson pine pulp plantation at Taizishan Bureau of 7 years. It showed that Markov theory can indeed reflect the diameter changing pr
Xiao Xinmian Su Youyuan Liao Huanzhong
2000, 19(5).
Abstract:根据地热加温养鳖的需要 ,采用按偏差调节的自动控制方法 ,确定比例积分调节规律 ,合理选择调节器、执行器和感温元件 ,设计了水温自动控制装置 ,将养殖水体的温度自动控制在 (30± 1)℃ ,创造了鳖的良好生态环境 ,打破了鳖的冬眠期 ,缩短养殖周期 ,提高了鳖的养殖密度和养殖成活率 ,促进其快速生长。全套装置在湖北省罗田三里畈地热开发公司进行安装运行 ,经过几年的实践 ,收到了良好的经济效益和社会效益
2000, 19(5).
Abstract:生长曲线模型(growth curve model,简记为GC)是在研究生物的某指标随时间的增长而变化建立的一种模型,本研究在V〉0未知的情况下,得到了推广的生长曲线模型未知参数矩阵的两步估计,并证明了估计量具有无偏性。
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