Chen Changfu ) Zeng Yanxiong ) Riichi Kusuda )
2000, 19(2).
Abstract:The lipopolysaccharide (LPS) was extracted from Cytophaga columnaris strain SC?5 and SC?6 which had been cultured for different time. Then the content and composition of the protein in LPS was determined using Lowry's method and polyacrylamide gel dis
Zhou Guangsheng Mei Fangzhu Zhou Zhuqing Zhu Xutong
2000, 19(2).
Abstract:Twelve varieties of wheat treated with waterlogging at booting stage and their yield characters were analysed. The results showed that waterlogging had great effects on wheat yield characters and wheat had different defence mechanisms. By regression an
2000, 19(2).
Abstract:Compared to control, accumulation of dry matter of virus free sweetpotato Xushu 18 was obviously increased in the whole growth and development period. The dry matter distributiion showed that it was mainly distributed to vines in early and to storage roo
Wang Xuekui Li Hesheng Liu Wuding
2000, 19(2).
Abstract:The mechanism of light on regulation of glutamine synthetase (GS) activity of etiolated wheat leaves was preliminarily studied under the treatment with calcium supply and no calcium supply ( Ca 2 ,-Ca 2 ) combining with different light and sp
Yang Xiaojun ) Yang Lijun ) Zhao Yongyu ) Yu Dazhao ) \ Xu Rongqin ) \ Zhang Zhongquan )
2000, 19(2).
Abstract:1997~ 1999年从湖北省襄樊、黄冈、荆州、宜昌等主要麦区小麦纹枯病病株标样上分离获得丝核菌 6 5株 ,其中双核丝核菌 43株 ,多核丝核菌 2 2株。将所得菌株分别与双核和多核丝核菌融合群国际标准菌株进行融合测试表明 ,湖北省小麦纹枯病病原菌属于Rhizoctoniacerealis的AGD融合群和R .solani的AG5、AG4 、AG2 2ⅢB、AG1 ⅠC融合群 ,相应菌株数分别为 43、12、6、2、2 ;各菌株间致病力存在明显差异 ;菌丝融合群间致病力不同 ,AGD、AG5、AG4 、AG2 2ⅢB、AG1 ⅠC融合群在鄂麦 12上的平均病级值分别为 2 .38、2 .15、2 .0 2、1.0 4、0 .44。
Wang Mingzu Han Qunying Fu Yanping Xiao Yannong
2000, 19(2).
Abstract:Wheat stubbles infected by take all fungus were collected from Qianjiang of Hubei Provine in 1998. The pathogenic fungus isolated from diseased tissues.On the bases of its characteristics in culture, morphology, physiology and pathogenicity to different
Shi Baojun\ Qin Huqiang\ Li Dongsheng\ Hu Yanling
2000, 19(2).
Abstract:将三唑酮,多菌灵原药按不同比例制成种衣剂,小麦包衣后在室内采用盆栽法对小麦白粉病菌和条锈病菌进行毒力测定。结果表明:三唑酮与多菌灵配比为1:5时,对小麦白粉病菌和条锈菌的共毒系数分别为165.3和373.7,表现为显著的增效作用,由此可确定小麦种衣剂中三唑酮与多菌灵最佳配比为1:5。
Ding Shuwen ) Cai Chongfa ) Huang Li ) Dong Zhou ) Cai Qiangguo ) Zhang Guangyuan )
2000, 19(2).
Abstract:秭归盆地是侏罗纪紫红色砂页岩组成的红色盆地 ,为一开阔的向斜构造 ,断裂构造为北北东向。通过大量野外调查和室内对各时代地层岩土性质分析与研究 ,结果表明 :侏罗纪地层具有粗—细—粗的沉积旋迥 ,其发育的土壤颗粒亦呈现粗—细—粗的变化趋势 ;紫色岩含钾较高、低磷、缺氮 ,由其发育的土壤也具有这一性质 ;盆地内部滑坡与岩性和地质构造密切相关 ,松散堆积体滑坡比重较大 ;与断层有关的滑坡 ,呈北北东向展布 ;与向斜有关的滑坡 ,东坡的滑坡发生向斜的西翼 ,西坡的滑坡发生向斜的东翼 ,与构造有关的滑坡规模较大
Liu Mingqiu Dai Jingyuan Yu Ziniu
2000, 19(2).
Abstract:Effects of five chemical synergistic factors (inorganic salts) on the toxicity of Bt oil formulation to Plutella xylostella and Heliothis armigera were tested. The results showed that four inorganic salts (CaCl 2 excluded) had synergistic effect
Chen Ming\ Chen Liguo\ Wang Guolian
2000, 19(2).
Abstract:Twenty eight single spore isolates were collected by dilution isolation, discharging spore from the same basidiocarp of Tremella fuciformis which came from Gutian County, Fujian Province. Compatibility tests suggested that heterothallism in the spec
2000, 19(2).
Abstract:利用华中农业大学养猪科学研究所的中国瘦肉猪新品系DⅣ系 1986~ 1992年期间测定资料 1747条、繁殖性能资料 5 2 0条和系谱资料 ,对日增重、背膘厚、边膘厚、总产仔数、产活仔数、初生窝重 6个性状进行了详细的遗传统计分析。用非求导的REML方法 (MTDFREML软件 )估计了这些性状的不同遗传模型条件下的遗传力及性状间的遗传相关系数和表型相关系数。用BLUP方法 (PEST软件 )估计这些性状的育种值 ,并计算遗传进展。日增重、背膘厚和边膘厚遗传力分别为 0 .41、0 .47和 0 .42 ,日增重和背膘厚两性状间表型相关和遗传相关分别为 0 .0 2和 - 0 .0 2 ,背膘厚和边膘厚遗传相关为 0 .99。而繁殖性状总产仔数、产活仔数、初生窝重的遗传力分别是 0 .0 9、0 .12和 0 .2 1。日增重、背膘厚、边膘厚、总产仔数、产活仔数、初生窝重遗传进展分别为 3g/d、- 0 .14mm、- 0 .13mm、0 .0 13头、0 .0 2头和 0 .0 3kg。中国瘦肉猪新品系DⅣ系采用群体继代选育法 ,经 6个世代的选育 ,主要性能指标均取得一定遗传进展
Chen Changfu ) Zeng Yanxiong ) Riichi Kusuda )
2000, 19(2).
Abstract:In order to demonstrate the effect of extracellular products (ECP) preformed from Aeromonas hydrophila on the immune defense mechanism of mandarinfish ( Siniperca chuatsi Basilewsky), the humoral and cell immunoactivity of mandarinfish were examin
Wang Pengcheng ) Zhou Zhixiang ) Tu Bingkun ) Zhuang Erqi ) Liu Xiaoyu ) Guo Guozhi ) Sun Linshan )
2000, 19(2).
Abstract:利用湖北省马尾松人工林的样地资料,建立了优势高生长方程,林分自然稀疏方程,未疏伐林分直径生长方程,疏伐后林分生长预测方程,直径分布模型、树高曲线方程,根据现场造林资料,建立了材种出材材种材性达到工艺要求的最低年龄,采用现现法(基准贴现率为12%)进行经济分析,以净现值(NPV)最大(适当考虑内部收益率IRR)来确定经济成熟。根据“以工艺成熟为基限,重点考虑经济成熟,适当兼顾数量成熟”的原则,确定不
Xu Youming ) Lin Han ) Ban Longhai ) Su Fengquan ) Liu Wanqi ) Zhen Hongbo )
2000, 19(2).
Abstract:本实验采用河南省引种火炬松1984年一般种源,1983年耐寒种源试验林为材料,研究林木不同生长阶段年轮宽度,晚材率与木材基本密度间的相互关系;结果表明火炬松林分早期生长阶段年轮宽度与木材基本密度间存在着显著的负相关。林分郁闭后年轮宽度、胸径与木材密度存在着极其微弱的负相关,不同生长阶段晚材率与木材基本密度均呈显著的正相关。早期优良种源评选没有考虑木材性状是不符合工业人工林培育种源选择的标准。
Yang Xiaoju\ Zhang Youde\ Li Heping
2000, 19(2).
Abstract:Observation on the formation and development of embryo and endosperm of the apomictic material of Eulaliopsis binata with stone wax cutting method indicated that the formation and development of the embryo and endosperm was in accord with the typical
Xin Hongchan ) Tao Shirong ) Cao Yufang ) Sun Taiyuan ) Xiu Hua )
2000, 19(2).
Abstract:The outcome gained from observing the dissected structures of flowers organs in the different stages of Phytolacca acinosa Roxb. indicate that its ovule is anatropous, bitegmic, and crassinucellar. The secondary sporogenous cell develops megaspore mo
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