Zhang Xuexian , Zhou Junchu , Li Fudi
1994, 13(1).
Abstract:Rhizobium leguminosarum biovar viceae host range plasmid(pJB5JI)was introduced into both the Rhizibium huakuii wild type strain 7653R and its symbiotic plasmid-cured in nodmutant strain 7653R+1.The alien plasmid pJB5JI in both kinds of transconjugants re
Xiong Hanfeng , Liu Wuding , Pi Meimei
1994, 13(1).
Abstract:施硼、施氮均提高油菜苗期对氮的吸收量,B×N交互作用与植株含氮量和单株吸氮量呈极显著的正效应。适量硼促进对NH4+和NO3-的吸收,缺硼和高硼影响其吸收。施硼施氮明显增加叶片硝酸还原酶活性,降低蛋白酶、肽酶活性;B×N交互作用与硝酸还原酶活性呈正效应,与蛋白酶、肽酶活性呈负效应。硼、氮及硼氮配合浸种明显增强油菜籽发芽过程中蛋白酶和肽酶活性。
Zhang Jinfa , Deng Zhong , Sun Jizhong , Liu Jinlan
1994, 13(1).
Abstract:以4个陆地棉作母本与4个海岛棉杂交,配制16个F1代进行种间杂种优势和配合力分析。结果表明,与推广陆地棉品种比较,种间F1代子棉产量、铃重、衣分和衣指的竞争杂种优势为较高的负值,而纤维长度和强度表现较高的正向优势。鄂荆1号和B2(海岛棉)产量配合力高,两者杂交F1代产量高于其他组合。
Liu Jinlan , Xu Zhenxiu , Nie Yichun
1994, 13(1)-18,T001.
Abstract:Dissected with paraffin,the ultrastructure of upland cotton pollens was investigated at different development stages using a scanning electron microscope.It is shown that there was a part of the callous wall broken into 2 to 3 pieces in the mature pollen
1994, 13(1).
Abstract:The culture,extraction,purification,components and content of toxions produced by the Wuchang strain of fungi(gibberella zeae)were studied.There are two water-soluble components in the toxins produced by the tested fungal strains during culturing on the w
Wang Guangneng , Kuang Xingquan
1994, 13(1).
Abstract:用系统聚类分析,将江汉平原棉区的红铃虫Pectionophoragossypiella(Saunders)发生期划分为4个生态地理区域。逐步回归分析表明:经度(°E)越高发生期越早,在相同的经度上才表现为随纬度(°N)或海拔的升高而发生期推迟。积温法分析知:从日平均气温稳定通过15℃时开始计算,当自然积温累积到1118.8、1420.9、1602.2、2868.4和3837.7日度(DD)时,越冬代化蛹及发蛾、第一、第二、第三代产卵分别达到高峰期。
1994, 13(1).
Abstract:In this paper,from a holistic viewpoint, the population dynamics of the citrus red mite Panong chus citri(McG.)has been analysed by principal composition and fuggy cluster analysis.The population dynamics may be shown with a comprehensive index,that is z
1994, 13(1).
Abstract:The research was carried out in Xiaogan,Hubei Province.The biological characteristics of green slender planthopper S.Procenus(Matsumura)were systematicall observed and the control techniques of the pest were also investigated,with artificial raising and f
1994, 13(1)-54,T002.
Abstract:Observing the anatomical structures of tomato plants under Ca-deficient and Mg-deficient conditions,it is shown that the cell structures of the endodermises and conduction tissues of the roots,stems and leaves are abnormal.The pith cells turn much smaller
He Shaojiang , Feng Xinmei , Gong Xiaoping , Liu Jianfu
1994, 13(1)-63,T001.
Abstract:采用改良的Hungate厌氧操作技术,从以奶牛粪为原料的沼气发酵池中分离到F33、G15、NB1三株产甲烷菌。F33菌体长杆状,弯曲杆状,G-,细胞大小为0.5~0.6μm×2~5.6μm,几个细胞连成丝状,丝状体可长达15~32μm。菌体发蓝绿色荧光,紫外光照射荧光易消失。菌落圆形,边缘呈丝状扩散,能利用H2/CO2和甲酸盐作为碳源和能源,不利用甲醇和乙酸盐。G15菌体呈短杆状,单个,成对或3~5个成短链,G-,细胞大小为0.4~0.7μm×0.7~2.0μm,具1~2根极生鞭毛,运动性强,菌体发蓝绿色荧光。菌落圆形,白色,边缘整齐,能利用H2/CO2和甲酸盐生长和产甲烷。NB1菌体呈拟八叠球状或聚集成细胞团,在培养过程中有单细胞出现,单细胞直径1.8~2.5μm,幼龄G+,老龄G-,菌体荧光强,不易消失,滚管分离得到的菌落谷粒状,黄白到黄褐色,边缘整齐,能利用H2/CO2、甲醇和乙酸盐生长和产甲烷。经鉴定,F33为甲酸甲烷杆菌,G15为史氏甲烷短杆菌,NB1为马氏甲烷八叠球菌。
1994, 13(1).
Abstract:武汉地区乳牛由饲料、饮水、空气三个氟来源的日摄氟总量,冬季为427.18mg/头(相当于0.72mg/kg·体重);夏季为620.83mg/头(相当于1.05mg/kg·体重)。组成日摄氟总量所占比重顺序是饲料>饮水>空气,空气是极次要的途径,可以忽略不计。乳牛由尿、粪、乳三个排氟途径排氟总量,冬季为295.33mg/头(相当于0.50mg/kg·体重);夏季为385.71mg/头(相当于0.65mg/kg·体重)。乳牛体内氟的日保留量,冬季为131.85mg/头(相当于0.22mg/kg·体重);夏季为235.12mg/头(相当于0.40mg/kg·体重)。乳牛对饲料氟的吸收率,冬季为54.93%,夏季为70.67%。
1994, 13(1).
Abstract:China merino(C.M.),xiangbei fine wool sheep(X.F.)and their crossbred(F1)ewes were used in this research.Colour of scoured wool and yolk characters related to it of corresponding samples,which were clipped first on 23 April and second on 25 May,were measur
1994, 13(1).
Abstract:The hot aqueous-phenol method was used for extracting water-phase antigen from Treponema hyodysenteriae. The specificity of the extract was tested with gel-diffusion method,rocket immunoelectrophoresis arid PHA test.The results showed that the extract rea
1994, 13(1).
Abstract:烟酸诺氟沙星(Norfioxacinnicotinate)对AA鸡的急性毒性研究:用5周龄健康AA鸡70只,随机分为7组,剂量范围0~8000mg·kg-1,等容量经嗉襄接毒。结果表明:烟酸诺氟沙星对鸡急性经口LD50为3458mg·kg-1,属低毒级药物。鸡急性中毒症状主要为流涎、腹泻及神经症状。主要病理学变化为脑膜充血、水肿,食道、嗉囊及十二指肠粘膜坏死和炎症,心、肝、肾等脏器实质细胞变性及坏死。
Tel: 027-87287364
Postcode: 430070
E-mail:hnlkxb@mail.hzau.edu.cn
Address: No.1 Shizishan Street,Hongshan District,Wuhan, Hubei,China
Jorunal of Huazhong Agricultural University ® 2024 All Rights Reserved Supported by:Beijing E-Tiller Technology Development Co., Ltd.