Abstract:With the helper pRK2073,the genome of Mesorhiobium huakuii 7653R was inserted randomly with Tn5sacBluxAB by triconjugation. 3200 transconjugants were obtained and replicated to YMA plate with 8% sucrose.8 colonies (neo-luxAB-sacB-) were s

Abstract:The fertility transformation characteristics of six Indica photothermosensitive genic male sterile lines(3204S,HN5S,8906S,AnxiangS,1103S,9451S) were studied under the natural conditions in Wuchang in 1996. Results showed:the sterility of al

Abstract:自８０年代以来，发达国家开始了棉纺工业设备的更新，将目前的部分环绽纺纱改为无绽气流纺纱，欧、美、日等国家和地区已普遍采用气流法纺低中支纱，美国已研究利用气流纺试纺高支纱，这使生产效率提高了３倍，成本下降１／３，产品档次大幅度提高。与环绽纺相比，气流纺...

Abstract:The grain filling processes of eleven wheat varieties with different kernel weight planted in Hubei Province were modeled with Logistic equation. The difference of grain filling parameters among three groups of varieties with different kernel

Abstract:This study showed that increasing the concentration of Cd2 and prolonging toxic time of Cd2 could reduce protein content and the activity of SOD and CAT, increase MDA content and the activity of POD, also increase the permeability of

Abstract:黄姜（ＤｉｏｓｃｏｒｅａｚｉｎｇｉｂｅｒｅｎｓｉｓＣ．Ｈ．Ｗｒｉｇｈｔ）是我国生产薯蓣皂甙元的重要原料，而薯蓣皂甙元又是生产许多激素药物的原料，在医药工业中占有重要地位。由于野生资源的大量采挖，导致原料严重紧缺，因此许多地方已开始进行人工栽培，以满足...

Abstract:The promotion of taxol formation by Cu2 is described in this paper. The optimum improvement of taxol production by Cu2 was got when 30 mol/L CuCl2 cell suspension cultures was added on the 20th day after inoculation, namely, the end of expo

Abstract:The experiments were conducted to determine the physiological changes of peanut plant inoculated with Meloidogyne arenaria. The results showed that the root activity, the absorption of N, P, K of infected plants decreased in three growth periods,

Abstract:Aphelenchus avenae from soil around roots of Lycopersicon esculentum, Brassica juncea and Allium tuberosum and Aphelenchoides bicaudatus from soil around roots of Rosa sp. in Hongkong were described as two new records of Hongkong.

Abstract:This paper studied the synthetic evaluation of agricultural lands based on remote sensing (RS), geographic information system (GIS) and material unit analysis which is one of the new and developing science .The research area is Shizi shan regi

Abstract:Under pot culture, twostep screening was taken on different boron efficiency rape (Brassica Napus L.) cultivars as following: (1) seedling screening. One hundred and thirty rape cultivars were selected to culture with boron deficiency and norm

Abstract:Under pot cultivation, the effect of a new type of mixed organic fertilizer and inorganic fertilizer with the same nutrient amount as the mixed organic fertilizer on yield, quality, and enzyme activities of chilli and tomato was studied.

Abstract:In order to measure the adsorption heat effect of boric acid by hydrous oxides of Mn, Al, and Fe in aqueous solutions, a new two-thermometer method was adopted. The temperature difference between before and after mixture of adsorbent and adsor

Abstract:在植物病毒研究中，病毒毒源的保藏是很重要的一环。保藏的目的不仅要维持病毒的侵染性，还要使病毒不产生变异和污染混杂［１］。在国外对植物病毒的保存方法和效果的研究较多［２，３］，而国内则少见报道。本试验采用冷冻干燥法对我国常见２０多种植物病毒长期保存的效...

Abstract:Using three specific pairs of primers, each cDNA fragment was amplified with RTPCR method from the total RNA extracted from the anticoagulant blood of infected pig. They were 774, 685 and 917 bp in length respectively, and covered the whole NS

Abstract:Based on the data of growth and cacass performance of Hubei white pigs line measured during 19901997, the genetic parameters of growth and carcass traits of Hubei white pigs line were estimated. The results show that almost all

Abstract:The anthelminthic effect of albendazole oxide was observed and determined on sheep naturally infected with parasitic helminth. In the test groups, each sheep was administered per os with 5,10,20 mg/kg of albendazole oxide respectively. In the

Abstract:Four hundred arbor acre broilers were randomly divided into four groups with 110 broilers in each group.The broiler group 1,2,3 and 4 were fed with brown rice substituted for 0%, 50%,70%,100% maize in the diets.The trial period was 45 d.Average fin

Abstract:The histological structure of the olfactory lamellae of the mandarin fish was observed under the light microscope, scanning and transmission electron microscope. The results showed that the olfactory lamella of the mandarin fish is not de

Abstract:This paper studied the sexual glands development, breeding group, reproductive capacity, spawning ground and viscid threads of egg cells of N. taihuensis from Fushui Reservoir. The results showed that the spring breeding group amo

Abstract:The paper studied the acute toxicity of decamethrin on grass carp fingerlings and the effects of decamethrin on brain AchE and ATPase.The 96hLC50 of type and type fingerlings were 2.16 g/L and 4.26 g/L. The 95 percent confidence limits were

Abstract:The significant difference in basic density was found among 18 provenances of 13yearold exotic loblolly pine in Wuhan. Its broad sense heritability was more than 0.42 and increased with tree age. According to the variance analyses, factors of

Abstract:单宁（即单宁酸）在五倍子中含量丰富，为五倍子的最主要加工产品，是重要的医药和化工原料，在许多领域都有广泛应用［１］。对于五倍子中单宁含量的测定，一般采用五倍子国家标准（ＧＢ５８４８－８６）中的方法［２］，但该法较繁琐，测定时间长。顾人侠等［３］对分光...

Abstract:After being extracted with hot water and precipitated with alcohol, proteins and colouring agent removed, then isolated by DEAE-cellulose and cellulose gel column chromatography, a pure polysaccharide Le was obtained from fruitbody of Lentinu

Abstract:Fucoidin(FD),isolated from Laminaria japonica Aresch, administered per os 10,50,150,and 300mg/kg in advance for 7 d , made the blood glucose level in mice administered with alloxan decrease by 52.4%,57.1%,43.3%, and 36.9%,respectively,in com

Abstract:Ｔａｙｌｏｒ（１９６１，１９７１）用大量生物种群抽样调查数据研究得出，在大自然种群中，种群空间格局多为非随机分布，均数（种群密度）ｍ与方差ｖ之间的关系是不独立的，即方差常随均数增加而增加，这种关系，Ｔａｙｌｏｒ认为遵从一指数法则，生态学文献常称之为Ｔ...

Abstract:In this paper, we consider weighted Carleman's i neqaulity in a very gen eral class of domains. Our results show that this problem has an intrinsic relat ionshop with extended Carleson Measure.

Abstract:在pRK2073的辅助作用下,通过三亲本接合转移,将Tn5(sac B-luxAB)插入华癸根瘤菌7653R菌株基因组中.将3200个Tn5 标记菌株影印到含有8%蔗糖的YMA平板,检测这些菌株的发光酶活性和新霉素抗性.共获得8个菌株,其选择标记消失.质粒检测发现其共生质粒有不同程度的缺失甚至消除.结瘤实验证明,所有共生质粒部分缺失(有的缺失达1/3)的菌株依然结瘤.经用luxAB探针的分子杂交证实,8个菌株中有3个对应的标记菌株其Tn5插在共生质粒上.