Peng Jian ) Slominski B A ) Guenter W ) Campbell L D ) Xiong Yuanzhu )
2000, 19(4).
Abstract:采用胃蛋白酶 胰蛋白酶两步水解双低菜籽饼粕样品 ,并用特定分子量拦截值的透析袋移出小分子的酶解产物的方法 ,离体测定了 3个中国双低菜籽饼粕与 1个加拿大卡诺拉饼粕的蛋白质消化率。试验结果表明 ,用本方法离体测定的卡诺拉粕蛋白质的消化率 (73.5 9% )与猪回肠末端和成年公鸡活体测定的结果相当一致 ,证明本方法在预测双低菜籽饼粕蛋白质的消化率时准确可靠。测定结果进一步揭示了加工方式对双低菜粕品质的影响
2000, 19(4).
Abstract:After waterlogging treatment, aerenchyma formed in two ways in the wheat secondary root cortex. The newly formed secondary roots of four varieties during secondary roots of waterlogging and the waterlogging tolerant varieties formed before the treatmen
Ge Taiming ) , ) Zhang Rongde ) Qin Falan ) Yu Yujun ) Xie Yuefeng )
2000, 19(4).
Abstract:Friable calli of Italian ryegrass ( Lolium multiflorum Lam.) were obtained from young inflorescence culture by subculturing the calli in organic nitrogen rich media and were used to promote the embryogenic suspension cultures. Fast growing, fine dis
Li Jing\ Hu Liyong\ Din Shuwen\ Cai Mingli
2000, 19(4).
Abstract:研究表明,苎麻生长发迹了5~20cm土层的温度状况,缩小了不同季节的最高与最低温度值的变幅。苎麻地在9月至次年3月的早晨8:00,5~20cm土层均具有升温效应,10月升温最高1.10℃;7~8月则有较强的降温效应,8月10cm土层隆温最多,为1.61℃。在下午14:00,4~9月苎麻地小区5~20cm土层表现显著的降温效应,高温的8月10cm土层的降温值平均高达3.19℃。苎麻地具有减少一年中土壤高于30℃和低于5℃温度的天数和累积量。
He Yueqiu ) , ) Tang Wenhua ) Hei Leung ) Robert S. Zeigler )
2000, 19(4).
Abstract:DNA of 310 rice blast isolates from the Rice Blast Nursery at the International Rice Research Institute was amplified using a pair of primers designed on the basis of an inverted repeat transposon Pot?2 sequence of Magnaporthe grisea . The isolates we
Wang Libing\ Li Xiang\ Li Yunfeng
2000, 19(4).
Abstract:In this thesis, the overwintering viability of Xanthomonas axonopodis pv. citri in Wuhan area is studies with two detecting methods: planting healthy Naval orange(susceptible) to initiate the disease naturally and inoculating Naval orange leaves b
Wen Caiyi ) \ Wu Yuanhua ) \ Zhang Yanhong )
2000, 19(4).
Abstract:感染马铃薯Y病毒脉坏死株系(PVY^N)后,敏感烟草体内的多酚氧化酶(PPO)活性升高,而抗性烟草的PPO活性降低,但其活性值均高于敏感烟草健康植株;敏感烟草从接种PVY^N后第8d起出现2条新的PPO同工酶谱带,而且随着病害程度的加重其强度增加,抗性烟草则没有新的PPO同工酶谱带出现,在未接种的情况下,抗性烟草体内的PPO活性明显高于敏感烟草,其PPO同工酶谱带数比敏感烟草多1条。
Lei Chaoliang\ Deng Jianhua\ Xue Dong\ Rong Xiulan\ Jiang Yong
2000, 19(4).
Abstract:Using the scanning electron microscope to identify the antenna of aphids on the Rhus potanini Maixim from Zhushan, it showed that the chemoraceptor of Du ensiform's and Zao ensiform's were alike, the Xiaozao ensiform's and Fuoshou ensiform's were
Xiao Yannong Wang Mingzu Fu Yanping Zeng Fantao
2000, 19(4).
Abstract:Four disease grade estimation methods are compared. The result shows that the disease indexes gotten by counting gall number of partial cut roots or whole roots (standard method ) and by measuring the percentage of galling roots in partial cut roots or w
Wang Kuitang Xu Hanhong Zhang Yining
2000, 19(4).
Abstract:This paper introduces a new synthesis method of insecticide Ethoprophos. Phosphorus oxychloride was used as starting material and it reacted with anhydrous ethanol to produce O ethyl phosphorodichloridate . 1 propanethio
2000, 19(4).
Abstract:The water characteristics of the lithosols with three different soil gravel ratios were studied. The study results show that there are some relationships between soil water vaporization, water retention ability, water conductivity and the ratio of soil
Ding Shuwen Hu Liyong Peng Dingxiang Li Jing Cai Chongfa
2000, 19(4).
Abstract:The jute geotextile was covered on the surface of Quaternary red soil in the test plots. By the aid of rainfall simulation, the soil loss amount and its process was measured. The result shows that jute geotextile can conserve soil and water efficiently o
Qiu Bingwen ) Zhou Yong ) Zhou Min ) Li Xueyuan )
2000, 19(4).
Abstract:分析了武汉市南湖1982~1998年主要营养物含量,结果表明,10多年来形态营养元素都有较大增长,尤其是磷增长最快,使氮磷比例下降;同时运用模糊向量加权计分法评价了历年营养程度,可以看出,南湖营养程度由1982年的中营养上升至1998年的重富营养水平,16年间增加了3个营养级别。最后提出南湖富营养化综合整治的若干建议措施,包括流域污染控制和湖内综合治理等。
Gao Tengyun ) Wang Yanling ) Han Zhengkang ) Dai Chunxu ) Li Junwei )
2000, 19(4).
Abstract:Holstein cows were divided into 3 groups at random to carry out a feeding trial. 1.2 mg/kg F89 and 20 mg/kg rumensin were added to the feed for experimental group 1 and experimental group 2 respectively. After 45 days, the experiment results show that F89
2000, 19(4).
Abstract:In Babesia orientalis endemic areas, cell culture derived soluble Babesia orientalis vaccine admixed with a Freund's complete adjuvant was administered in 2 dose, 2 weeks between each dose, to 82 buffaloes one month before endemic period. An addi
2000, 19(4).
Abstract:众多的微卫星位点及其丰富的多态性是微卫星在各领域广泛应用的基础。在定位QTL方面 ,现在通过建立猪资源家系 ,人们已把一些与繁殖、生长、胴体和肉质等方面有关的数量性状位点定位在某些微卫星附近。例如 ,3号染色体上微卫星SW2 4 2 7-SW2 51区域与猪的日增重、4号染色体上S0 1 0 1 -S0 1 0 7区域与背膘、腹脂、7号染色体上S0 0 64-S0 0 66区域与胴体组成和初生重有着很大的关联[1] 。 1 2号染色体为最短的中部着丝粒染色体 ,因与猪生产性状紧密相关的生长激素 (GH)基因位于其上而倍受重视[2 ,3] 。虽然目前对GH基因研究得…
2000, 19(4).
Abstract:猪繁殖与呼吸综合症 (porcinereproductiveandrespiratorysyndrome,PRRS)是目前危害世界养猪业的主要疾病之一 ,能引起母猪严重繁殖障碍及各种年龄的猪出现呼吸道症状 ,育肥猪发病率高、发病后生长缓慢、饲料报酬低、康复猪可长期带毒并排毒。自 1 987年美国首次报道以来 ,世界上很多国家都相继报道 ,并分离到该病毒 ,PRRS已成为国际上危害养猪业最严重的传染病之一。该病病原为PRRS病毒 (porcinereproductiveandrespiratorysyndromevir…
Ai Xiaojie ) Chen Weihua ) Chen Jie ) Han Zhengkang )
2000, 19(4).
Abstract:选用24只7日龄雏鹅,随机分成对照和试验2组。饲以大麦(占45%)基础日粮,试验组添加0.1%的Biokyowa商品粗酶制剂。试验期为7~60日龄,每周称量体重和记录采食量。60日龄时由翅静脉采取血样,分离血浆用激素测定。结果如下:试验组体重自3周龄起显著高于对照组,而周增重于2~5周龄显著提高,且该期间的采食量增加,料重比略为下降;血液中GH、IGF-I含量较对照组高36.63%(P〈0.05)和66.55^(P〈0.01),β-END却下降了51.66%(P〈0.01);试验组的TSH、T3水平较对照组分别高24.39%(P〈0.05)和16.81%(P〈0.05),而T4水平却低18.33(P〉0.05),T3/T4比值升高。以上结果表明:添加粗酶制剂不仅能改善生长鹅对大麦日粮的消化,而且影响机体的代谢激
2000, 19(4).
Abstract:在单胃动物生产上 ,为了尽可能少的投入 (饲料等 )获得尽可能多的产出 (畜产品 ) ,同时最大限度地减少环境污染 ,就必须平衡地供给畜禽以适量的能量和各种营养素。研究表明 ,以可利用氨基酸为基础制定的营养需要和设计的日粮配方 ,不仅可使日粮氨基酸更加趋向平衡 ,提高畜禽的生产性能 ,而且能充分利用廉价的非常规蛋白质饲料 ,降低成本 ,提高生产经济效益。真代谢能 (TME) [1] 方法目前已广泛应用于鸡饲料的氨基酸利用率测定[2 ] 。由于湖北省的土壤、气候 ,品种、及加工方法有别于其它省份 ,其棉籽粕、花生粕和菜籽粕的氨基酸真利用率…
Chen Changfu ) Zeng Yanxiong ) Riichi Kusuda )
2000, 19(4).
Abstract:The mandarinfish ( Siniperca chuatsi Basilewsky) were immunized with lipopolysaccharide (LPS) extracted from Aeromonas hydrophila, Cytophaga columnaris and Edwardsiella tarda . The relative percent survival (RPS) of mandarinfish were compared by
Wu Zhixin Chen Xiaoxuan Tang Zhenyu
2000, 19(4).
Abstract:研究了红螯螯虾虾对二氧化氯、三氯异氰尿酸和福尔马林的耐受性。结果表明:在水温24~25℃时,虾苗对二氧化氯、三氯异氰尿酸和福尔马林在24h的LC50分别为16.30mg/L、17.50mg/L、1067.37mg/L;48h的LC50分别为15.36mg/L、49mg/L、743.70mg/L;安全浓度分别为4.09mg/L、3.16mg/L、108.31mg/L。
2000, 19(4).
Abstract:3种抗寒性不同的柑桔胚性愈伤组织原生质体经低温锻炼后,原生质体抗寒力得到增强,并在第12d达到最大。柑桔原生质体SOD、CAT酶活性变化同步提高,而细胞膜脂过氧化水平随低温锻炼进程逐步下降,至第12d回升。结果表明:柑桔原生质体SOD、CAT酶活性与抗寒性正相关,而MDA的含量则与抗寒性成负相关,可以利用柑桔原生质体SOD、CAT酸活性和MDA的含量鉴定柑桔原生质体的抗寒性。
Xiang Changping\ Wu Changyin\ Wang Liping
2000, 19(4).
Abstract:The expriment was conducted in order to analyse the nutrient composition in bitter gourd( Monordica charanlia L.). The result shows that there is a quantity of vitamin C, protein and soluble sugars in bitter gourd. And the minerals which are beneficial
Wang Fuqing ) Cheng Xianfeng ) Meng Xiangxia ) Dong Shulian ) Zhao Yonghou )
2000, 19(4).
Abstract:大白菜雄性不育两用系88-3雄性败育过程的细胞解剖观察结果表明,大多数孢子母细胞能正常形成;败育从小孢子母细胞至二核花粉粒皆有发生,高峰期出现在末期Ⅱ前后;败育形成主要有小孢子母细胞不能进入减数分裂和小孢子母细胞不能完成减数分裂及子孢子不能正常发育3种形式;败育特点是败育一旦发生便彻底解体或凝聚成一团;成熟花药内无花粉粒;中层组织、绒毡层组织及药隔维管束异常均与雄性败育有关。
Xu Youming ) Su Fengquan ) Tang Wanpeng ) Lin Han ) Xu Xianyang ) Ban Longhai ) Liu Wanqi )
2000, 19(4).
Abstract:s The test stands of 18 cold tolerance provenance (CTP) and 22 common provenance (CP) of exotic loblolly pine were planted in southern mountains of Henan Province of China in 1984 and 1985. The significant differences in wood basic density were found am
Yang Huanwen ) Liu Yanzhong ) Cui Mingwu ) Lowell P. Bush ) Harold R. Burton )
2000, 19(4).
Abstract:深色晾烟品种KY171在22℃和70%相对湿度下晾制表明,晾制后1~6周的叶肉和2~6周的主脉水分迅速下降。晾制后1~4周电导率迅速提高。晾制过程中叶肉和主脉中硝酸盐含量均没有显著变化。晾制3周后主脉和叶肉中亚硝酸盐含量逐渐增加。打预后及晾制初期叶肉中各烟草生物碱均增加,晾制2~3周稍有下降,然后至晾制结束都没有变化,整个晾制过程主脉中各烟草生物碱含量均无变化。成熟采收的鲜烟叶及晾制1周内的烟叶中各种亚硝胺含量为0,晾制后1周后逐渐增加。晾制后6周(N-甲基-亚硝氨)-1-(3-吡啶基)-1-丁酮(NNK)及总烟草特有的亚硝胺(TSNA)、晾制后5周N-亚硝基去甲基烟碱(NNN)、晾制后7周N-亚硝基假木贼碱(NBA)和N-亚硝基新烟草碱(NAT)含量达最高峰,且主脉和叶肉的变化规律悠扬。
2000, 19(4).
Abstract:In this study, a nonliner difference model of single population growth is established. The range of parameters and regions of equilibrium are pointed out. Periodic and chaotic behavior of the model has been explored.\;
2000, 19(4).
Abstract:This paper is concerned with putting forward a micro algorithm used to research the fine construction of Mandelbrot set under a general complex, and using it to analyze and study the feature of the fractal figure of Mandelbrot set.
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