1993, 12(6).
Abstract:选用抗玉米象的4个水稻品种即花粳2号、665、浙852、鄂宜105;和2个感虫品种即秀水48、Ⅱ优46,研究其稻谷、糙米、精米对玉米象的抗虫性差异。结果表明:抗虫品种不同米型的抗虫性顺序是糙米最感玉米象,精米次之,稻谷最抗玉米象。感虫品种是糙米最感玉米象,稻谷次之,精米最抗玉米象。但其中感虫品种的稻谷和精米的抗虫性经方差分析和新复极差测验,无显著差异。
1993, 12(6).
Abstract:This is a review on apomixis in rice inclusing apomictic significance, research tendance and progress. Plant apomixis that is a new growing tip of biology possesses important significance in fixation of heterosis, shortening breeding period and revolution
1993, 12(6).
Abstract:不断的遗传改良使普通小麦和六倍体小黑麦的核型发生了许多变化。本文从染色体相互易位,异染色质的丢失和外源染色质的导入三个主要方面讨论普通小麦和六倍体小黑麦核型的变化情况。同时,本文还将简要讨论核型的变化与普通小麦和六倍体小黑麦分类地位的关系。
1993, 12(6).
Abstract:1992年和1993年对田间的17个甘蓝型油菜品种(系),6个属种间杂种的小孢子进行了培养,并对基本培养基,蔗糖浓度和激素对小孢子胚状诱导的影响进行了研究,以建立田间植株的小孢子培养体系。试验结果表明,NLN,KR和K三种培养基均可使小孢子形成胚状体,但从产胚率和胚状体的质量看,以NLN最佳。在所有的处理中,10%蔗糖没有诱导出胚状体,13%蔗糖是有效的。在两年的试验中,0.01-0.1mg·L^
1993, 12(6).
Abstract:Allocyplasmic male sterile lines 1800A and 2818-2A have been developed by conventional methods of crossing and recurrent selection from a interspecific cross between a male sterile line of Bo Li Ma cytoplasm in B. napus and an elite inbreed line in B. cam
1993, 12(6).
Abstract:将甘蓝型黄籽油菜品种华黄一号优系繁殖的株系50余份材料的成熟种子,按其含油量分为高,中,低3种,分别对其子叶贮藏细胞中的脂体,蛋白体结构及其大小,分布状态进行透射电镜观察。结果表明,在高油分材料中,脂体大,排列紧密,呈多边形镶嵌分布,脂体间空隙小,并在整个细胞中所占比例较蛋白体为大。在低油分材料中,子叶贮藏细胞内脂体排列疏松,多呈椭圆形,大小不等,脂体间空隙大,脂体所占比例明显小于高油分材料。中油
Huang Changhua Li Jiahong Zhang Yuqun Wang Mo Liu Sheng
1993, 12(6).
Abstract:芽胞杆菌HCH菌株发酵,灭菌,浓缩液,用含毒介质法测定其EC50为177.8mg·kg^-1。将该菌发酵液进行不同处理,即发酵原液,原液灭菌,原液体积浓缩一半,原液浓缩又灭菌及对照药剂多菌灵,用于田间小区防治小麦赤霉病试验,防治效果分别为59.36%,51.36%,61.24%,48.19%和57.77%。上述4种处理与多菌灵在用量各减半后,混合使用,其防效均高于各单剂,发酵灭菌原液+多菌灵,防效
1993, 12(6).
Abstract:The digestive system of chondracris consists of alimentary canal and salivary glands. The alimentary canal can be divide into three parts including stomodaeum, mesenteron and proctodaeum. The stomodaeum is composed of mouth, phorynx, oesophgus, crop and p
Zhang Jianbing Ou Guangdong Sun Ming Chen Yanhua Yu Ziniu
1993, 12(6).
Abstract:Bacillus thuring iensis CT-43 is toxic to larva of housefly. After treatment of plasmid curing, 15 mutants were identified out of 50 strains, of the 15 mutants were found to lack the. 140 kD ICP and 7 lack the 130 and 68 kD ICP. The strain lacking 140 kD
1993, 12(6).
Abstract:用玻璃罩收集武汉地区早熟中稻田在自然栽培条件下释放的甲烷,并以气相色谱法测定释放甲烷量。实验结果表明,武汉地区早熟中稻田的甲烷释放量从0.10-14.10mg·m^-2·h^-1。在分蘖末期和幼穗分化始期释放量最大。稻田白天释放的甲烷量比晚上多。
1993, 12(6).
Abstract:系统研究了硅钙肥中可溶性二氧化硅的钼黄测定方法。首次提出采用450nm为比色测定的工作波长,可明显改善测定的线性范围,减化比色操作。首次提出了共存磷与硅测定误差的定量关系,在P2O5/SiO20.08时,磷对硅的影响仅在仪器测定误差内。对浸提条件和比色前处理研究表明:待测液的解聚处理及条件对测定的影响极大;放置12小时(过液)浸提是不可取的;浸提温度,样液比和振荡时间在较大范围内变动对测定没有显著
Yi Ganjun Xia Renxue Ma Mengting Wan Zhicheng
1993, 12(6).
Abstract:B,Mn对盆载板栗实生苗,在统一肥底的基础上,分别添加B 0.75mg·kg^-1土,Mn50mg·kg^-1土和B+Mn(量同上)。结果表明:缺B,Mn幼苗生长明显受阻,叶绿素含量,光合强度显降低,过氧化物酶,分酚氧化酶活性明显提高,细胞膜透性亦增加。B,Mn还影响或显影响幼苗叶片矿质元素含量,其影响程度因元素种类而异。
Yu Zhihe Zhu Lanbao Yang Xinmei
1993, 12(6).
Abstract:The monokaryons and dikaryons hyphae of Flammulina velutipes were cultured with insert galss cover. The occurring ways and shapes of oidia produced by mono and dikaryotic hyphae were observed under optical microscope and scanning electron microscope. It w
Wei Qingxin Fan Junhua Chen Dongbao Li Shaozhang Hu Hongyu Hua Wenjun Wang Chong
1993, 12(6).
Abstract:以湖北白猪为实验材料,显微注射OMT/PGH基因(绵羊启动子和猪生长激素的融合基因)于1125枚1~4细胞期的早期胚胎核内,共产仔167头,产仔率14.8%。Dot(斑点杂交)和Southern blot(印迹转膜杂交)检测,29头阳性,阳性率17.9%。通过传代进行转基因的遗传分析。G_0×G_0的配种组合,产仔63头,其中阳性20头,阳性率31.7%;G_0×非转基因猪的组合,产仔66头,其中阳性10头,阳性率15.2%。对11头G_0猪血清用放射免疫法测定的结果,其生长激素的浓度相当于对照组的2.03~6.70倍。16头G_0猪180日龄的生长速度比同窝对照提高11.8%;11头G_1猪比同窝对照提高14.8%,饲料转化率提高10%,瘦肉率有提高的趋势。
Wang Daju Zhou Shiqi Ye Dongqing Huang Jisun Yang Yufen
1993, 12(6).
Abstract:博落回对小鼠经口急性毒性和对大鼠腹腔注射慢性毒性试验结果表明:博落回生物碱硫酸盐对昆明系小鼠的急性毒性为:水溶液LD50=900mg·kg^-1,水混悬液LD50=1043mg·kg^-1,均属低毒级。博落回注射液对Wistar大鼠亚慢性毒作用的靶器官主要为肝,长时间或大剂量接毒引起肝细胞变性,增生,使雄性动物肝/体比明显增高,而血清谷-丙转氯酶下降。
Yang Xiuping Gao Xiuqin Huang Xiangzhu
1993, 12(6).
Abstract:The morphology of the mandarin fish's brain and cranial nerves were studied in this report. It was discovered that the shape of the fish's brain was affected to agreat extent by the fish's habits. It was inferred from features of the fish's well developed
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