稚海龟的雌雄辨别

稚海龟的雌雄辨别张晓荣，李放明，王伦武（广东港口海龟自然保护区管理站广东５１６３５９）海龟（Ｃｈｅｌｏｎｉａｍｙｄａｓｊａｐｏｎｉｃａ），俗称绿海龟（Ｇｒｅｅｎｔｕｒｔｌｅ），象其它亚种：Ｃ．ｍｙｄａｓｍｙａｓ，Ｃ．ｍｙｄａｓａｇａｓｉｊｚｊｊＣ．ｍ...     

芸香草和西昌香茅挥发油的化学成分

芸香草和西昌香茅挥发油的化学成分张荣，苏中武，李承祜（第二军医大学药学院，上海２００４３３）关键词芸香草，西昌香茅，挥发油ＣｈｅｍｉｃａｌｃｏｎｓｔｉｔｕｅｎｔｓｏｆｅｓｓｅｎｔｉａｌｏｉｌｓｆｒｏｍＣｙｍｂｏｐｏｇｏｎｄｉｓｔｏｎｓ（ＮｅｅｓｅｘＳ...     

四川西部秽蝇族四新种

本文报道四川秽蝇亚科Ｃｏｅｎｏｓｉｉｎａｅ秽蝇族 Ｃｏｅｎｏｓｉｉｎｉ４新种；短指秽蝇，新种Ｃｏｅｎｏｓｉａ ｂｒａｃｈｙｏｄａｃｔｙｌａ ｓｐ．ｎｏｖ．；虎爪溜芒蝇，新种Ｃａｒｉｃｅａ ｕｎｇｕｌｉｔｉｇｒｉｓ ｓｐ．ｎｏｖ．；后侧叶溜芒蝇，新种Ｃａｒｉｃｅａ ｐｏｓｔｉｆｏｌｉｆｅｒａ ｓｐ．ｎｏｖ；寒溜芒蝇，新种Ｃａｒｉｃｅａ ｆｒｉｇｉｄａ ｓｐ．ｎｏｖ。模式标本存沈阳师范学院昆虫研究所。     

中国隐胫瓢虫亚科Aspidimerinae的新种及新记录：（鞘翅目：瓢虫科）

本文记述了中国隐胫瓢虫亚科Ａｓｐｉｄｉｍｅｒｉｎａｅ３属３４种，其中包括１亲记录属：拟隐胫瓢虫属Ｐｓｅｕｄａｓｐｉｄｉｍｅｒｕｓ；１新记录种：棕环拟隐胫瓢虫Ｐｓｅｕｄａｓｐｉｄｉｍｅｒｕｓ ｌｏｍｂａｔｕｓ Ｈｏａｎｇ，１９８３和３新种：舌端隐势瓢虫Ｃｒｙｐｔｏｇｏｎｕｓ ｌｉｎｇｕｉｌａｔｕｓ，曲斑隐势瓢虫Ｃｒｙｐｔｏｇｏｎｕｓ ｆｒａｃｔｅｍａｃｕｌａｔｕｓ及短叶隐势瓢虫Ｃｒｙｐｔｏｇｏｎｕｓ     

2002年国际数学家大会生物数学卫星会议2002年8月15日-18日中国广西桂林市,广西师范大学田家炳书院(第二次通知)

会议主页：ｈｔｔｐ：／／ｗｗｗ．ｇｘｎｕ．ｅｄｕ．ｃｎ主办单位：中国数学会生物数学分会 中国生态学会数学生态专业委员会承办单位：广西师范大学剖分特邀报告人： Ｆｒｅｄ Ｂｒａｕｅｒ（Ｕｎｉｖｅｒｓｉｔｙ ｏｆ Ｂｒｉｔｉｓｈ Ｃｏｌｕｍｂｉａ，加拿大） Ｃａｒｌｏｓ Ｃａｓｔｉｌｌｏ－Ｃｈａｖｅｚ（Ｃｏｒｎｅｌｌ Ｕｎｉｖｅｒｓｉｔｙ，美国） Ｊｉｍ Ｍ Ｃｕｓｈｉｎｇ（Ｕｎｉｖｅｒｓｉｔｙ ｏｆ Ａｒｉｚｏｎａ，美国） Ｔ．Ｇ．Ｈａｌｌａｍ（Ｔｈｅ ＵｎｉｖｅｒｓｉｔＹ ｏｆ Ｔｅｎｎｅｓｓｅｅ，美国） Ｙａｎ…     

Regulation of C－Fos mRNA Expression in Sertoli Cells by cAMP，Ca~（＋＋），and protein Kinase C－mediated Pathways

ＲｅｇｕｌａｔｉｏｎｏｆＣ－ＦｏｓｍＲＮＡＥｘｐｒｅｓｓｉｏｎｉｎＳｅｒｔｏｌｉＣｅｌｌｓｂｙｃＡＭＰ，Ｃａ~（＋＋），ａｎｄｐｒｏｔｅｉｎＫｉｎａｓｅＣ－ｍｅｄｉａｔｅｄＰａｔｈｗａｙｓ￥ＪＩＡＭｅｎｇ－ｃｈｕｎ；（贾孟春）；ＮｅｅｌａｋａｎｔａＲ?..     

绒山羊转铁蛋白多态性的研究

绒山羊转铁蛋白多态性的研究ＴＲＡＮＳＦＥＲＲＩＮＰＯＬＹＭＯＲＰＨＩＳＭＩＮＣＡＳＨＭＥＲＥＧＯＡＴ关键词绒山羊，转铁蛋白，多态性ＫｅｙｗｏｒｄｓＣａｓｈｍｅｒｅｇｏａｔ，Ｔｒａｎｓｆｅｒｉｎ，Ｐｏｌｙｍｏｒｐｈｉｓｍ转铁蛋白（ｔｒａｎｓｆｅｒｉｎ，...     

贺兰山地区雏蝗属二新种记述(直翅目:网翅蝗科)

记述在贺兰山西侧阿拉善左旗采到的网支蝗科雏蝗二新种，即阿拉善雏蝗Ｃｈｏｒｔｈｉｐｐｕｓ ａｌｘａｅｎｓｉｓ Ｚｈｅｎｇ，ｓｐ．ｎｏｖ，及哈拉乌雏蝗Ｃｈｏｒｔｈｉｐｐｕｓ ｈａｌａｗｕｅｎｓｉｓ Ｚｈｅｎｇ，ｓｐ，ｎｏｖ．。     

蝮蛇咬伤,急性肾功能衰竭救愈一例

蝮蛇咬伤，急性肾功能衰竭救愈一例高忠恩（江苏省苏州市中医医院）ＯｎｅｏｆｔｈｅＣａｓｅｓｆｏｒｔｈｅＣｕｒｉｎｇｏｆＥｍｅｒｇｅｎｃｙｒｅｎａｌｆａｉｌｕｒｅＣａｕｓｅｄｂｙｖｉｐｅｒｂｉｔｅｓｔｈｒｏｕｇｈｔｒａｄｉｔｉｏｎａｌＣｈｉｎｅｓｅＭｅｄ...     

朴属新分类群

贡山朴新种图１ＣｅｌｔｉｓｇｏｎｇｓｈａｎｅｎｓｉｓＸ．Ｗ．ＬｉｅｔＧ．Ｓｈ．Ｆａｎ，ｓｐ．ｎｏｖ．ＳｐｅｃｉｅｓａｆｉｎｉｓＣ．ｋｕｎｍｉｎｇｅｎｓｉ，ｓｅｄｆｏｌｉｓｓｕｐｒａｓｔｒｉｇｏｓｉｓｅｔｖｉｌｏｓｉｓ，ｍａｒｇｉｎｅｉｒｅｇｕｌａｒｉ...     

不同生境下木麻黄脯氨酸含量和质膜ATPase活性的研究

采集生长于恶劣环境和中生环境的普通木麻黄(Casuarina)小枝,超速离心提取粗质膜制剂后,用两相系统法纯化得到质膜微囊,研究不同生境下木麻黄的质膜ATPase活性,并测定木麻黄小枝的游离脯氨酸含量。实验结果表明：同一生境中的木麻黄ATPase活性相对一致,而同一树种木麻黄不同生境下质膜微囊H^ -ATPase、Ca^2 ATPase、K^ -ATPase活性有显著差异,表现出以渗透胁迫为主的恶劣环境下的木麻黄质膜微囊ATPase活性和木麻黄细胞内游离脯氨酸明显高于中生环境下生长的木麻黄。说明普通木麻黄在干旱和盐胁迫下能调整生理生化过程来提高其质膜ATPase活性和增加细胞内脯氨酸含量提高渗透调节能力以保证其在恶劣环境的正常生长。     

不同生境下木麻黄脯氨酸含量和质膜ATPase活性的研究

采集生长于恶劣环境和中生环境的普通木麻黄(Casuarina)小枝,超速离心提取粗质膜制剂后,用两相系统法纯化得到质膜微囊,研究不同生境下木麻黄的质膜ATPase活性,并测定木麻黄小枝的游离脯氨酸含量。实验结果表明:同一生境中的木麻黄ATPase活性相对一致,而同一树种木麻黄不同生境下质膜微囊H~+-ATPase、Ca~(2+)-ATPase、K~+-ATPase活性有显著差异,表现出以渗透胁迫为主的恶劣环境下的木麻黄质膜微囊ATPase活性和木麻黄细胞内游离脯氨酸明显高于中生环境下生长的木麻黄。说明普通木麻黄在干旱和盐胁迫下能调整生理生化过程来提高其质膜ATPase活性和增加细胞内脯氨酸含量提高渗透调节能力以保证其在恶劣环境的正常生长。     

Growth promoting effect of Azospirillum brasilense on Casuarina cunninghamiana Miq. seedlings

The growth of Casuarina cunninghamiana seedlings was stimulated when inoculated with Azospirillum brasilense. This resulted in a higher biomass production than in uninoculated controls in the presence or absence of a non-nodulating strain of Frankia.Increase in whole plant dry weight was due to a significant increase in both shoot and root biomass, which corresponded with a higher total N content of the plants inoculated with Azospirillum. No such effects were observed under inoculation with a non-nodulating Frankia strain. These results suggest that the growth-promoting substances provided by A. brasilense may have enhanced the growth of Casuarina seedlings.     

Effects of symbiosis with Frankia and arbuscular mycorrhizal fungus on the natural abundance of 15N in four species of Casuarina

The effect of interactions between Casuarina species, Frankia strains and AMF on nitrogen isotope fractionation within the plant were determined under conditions where changes in source nitrogen were minimized by growing plants in mineral nitrogen-deficient conditions and without added organic N. Casuarina cunninghamiana, C. equisetifolia, C. glauca, and C. junghuniana were inoculated singly with three Frankia strains or were dual inoculated with Frankia and Glomus fasciculatum. The %N and delta 15N of separated parts of plants inoculated with the three Frankia strains or with Frankia + Glomus were not significantly different within Casuarina species. However, the slow-growing C. junghuniana differed in several variables from the other three species. There was a highly significant, linear relationship between the natural logarithms of cladode N content and delta 15N of plants of the four Casuarina species when inoculated with Frankia or with Frankia + Glomus, showing that nitrogen supply and the correlated variable, plant growth rate, were major determinants of delta 15N. Provision of small quantities of (NH4)2SO4 or KNO3 increased several-fold the growth of three of the Casuarina species when inoculated with Frankia alone or with Frankia + Glomus. Within species, mycorrhizal and non-mycorrhizal plants receiving supplementary soluble phosphate were of similar dry weights at harvest. delta 15N values for cladodes of C. cunninghamiana, C. equisetifolia and C. glauca were similar, but values for the poor growing C. junghuniana were more variable and, with the exception of plants receiving KNO3, were lower than those of the other three species. Reduced growth due to suboptimal availability of N or P had a major influence on delta 15N and, in these conditions where plants could not access significant amounts of organic N, outweighed any effects on cladode delta 15N of colonization by Glomus. delta 15N values of nodules were higher than other parts of Frankia or Frankia + Glomus inoculated Casuarinas, conceivably due to retention in nodules of fixed N, with delta 15N close to zero.     

Some effects of combined nitrogen on the nodule symbioses of Casuarina and Ceanothus

Summary 1. The effect of ammonium-nitrogen on the further growth and activity in fixation of nodules already present at the commencement has been studied inCasuarina cunninghamiana growing in water culture and inCeanothus velutinus var.laevigatus in Peralite culture. 2. In Casuarina, at a low level of ammonium-nitrogen nodule growth remained similar to that in plants in nitrogen-free solution, but was stimulated in Ceanothus. In both genera nodule growth was strongly retarded at higher levels. 3. Fixation of nitrogen fell continuously in Casuarina as the level of ammonium-nitrogen was increased, while that in Ceanothus was unaffected at a low level but markedly decreased at a higher one. These effects were compounded from the changes noted in 2 and a tendency for the efficiency of nodule tissues in fixation to fall in the presence of ammonium-nitrogen, though this was not always shown. 4. In both genera but especially in Casuarina the growth of plants entirely dependent on nodule nitrogen was inferior to that of plants additionally supplied with ammonium-nitrogen. The reasons are discussed. 5. The results indicate the effects likely to be produced in the field as the soil nitrogen level rises through the action of the nodules of these species.     

盐胁迫下木麻黄幼树营养元素的分配规律

利用盆栽试验,研究了盐胁迫下木麻黄幼树营养元素含量和分布规律。结果表明,不同施盐量处理的木麻黄幼树生长、营养元素含量及分布发生明显的变化。低浓度(5g/kg)NaCl处理促进了木麻黄的生长,而高浓度(20、25g/kg)则抑制木麻黄的生长。随着盐浓度的增加,木麻黄根中N、P、K,茎中N、P,小枝中N含量随之增加,并与盐浓度之间呈显著正相关,而茎和小枝中的K以及小枝中的Ca含量则与盐浓度之间呈显著负相关,说明盐胁迫下木麻黄营养元素的比例失调是导致盐害的主要原因之一。盐浓度对Mg元素影响较小。     

木麻黄逆境生理研究进展(综述)

本文综述水分、盐分、重金属和酸雨等逆境条件对木麻黄生长发育及生理生化等方面的影响,指出木麻黄造林的主要逆境因素是水分和盐分,并对今后的研究工作提出建议。     

木麻黄浸提液对榄仁树幼苗生长及生理生化的影响

该研究试图将榄仁树引入木麻黄海防林以期形成混交林型的海防林。以15 d榄仁树种子苗为材料,分别采用浓度为125 g·L~-1的木麻黄根、木麻黄凋落物和林下表层土壤的水浸提液胁迫处理榄仁树幼苗60 d,研究木麻黄化感作用对榄仁树幼苗生长、光合作用、膜系统伤害、抗氧化系统酶活性及游离Pro含量的影响。结果表明:木麻黄根、木麻黄凋落物及林下表层土壤的水浸提液都能降低榄仁树幼苗的存活率,影响幼苗株高、叶和根生物量,可以推断不同浸提液中对影响植物生长成分的浓度有所不同。3种浸提液均显著降低处理15~45 d期间幼苗的净光合速率(Pn)、气孔导度(Ccond)、胞间CO_2浓度(Ci)、蒸腾速率(Tr),且显著增加幼苗水分利用率(WUE)。第60天时3种木麻黄浸提液能显著增加幼苗叶片、根的Pro含量,使得幼苗根系组织细胞膜通透性增加,而木麻黄根浸提液能显著增加幼苗Ccond、Ci、叶SOD、根CAT含量,木麻黄凋落物浸提液能显著增加幼苗Ccond和Tr,同时凋落物浸提液会显著降低幼苗根POD含量。榄仁树幼苗通过调整自身的生理生化能适应木麻黄化感胁迫的影响,为此可考虑榄仁树作为沿海防护林建设的树种之一。     

The abilities of three Frankia isolates to nodulate and fix nitrogen with four species of Casuarina

Three isolates of Frankia from nodules of Casuarina sens, strict. (JCT287. JCT295 and 20607) were compared in their abilities to nodulate and fix N, when associated with four species of Casuarina ( C. cunninghamiana Miq., C. equisetifolia Forst., C obesa Miq. and C. glauca Sieb. ex Spreng) growing in a N-deficient soil.
All three Frankia isolates nodulated each of the four species of Casuarina . At 27 weeks after inoculation, growth (dry weight) of inoculated plants was 3.6 to 5.0 times greater than that of uninoculated plants. There were no significant differences in plant dry weight, the N concentration of shoots or roots, or the amount of N, fixed per plant among the Frankia isolates for each of the species of Casuarina studied. The infectivity and effectiveness in N, fixation of Frankia strain JCT287 with C. cunninghamiana was similar when two different defined media were used for culture of the inoculum.     

Root Nodule Symbiosis II

Nodule-roots of Myrica cerifera (Southern Wax Myrtle) and Casuarina cunning hamiana (Australian Pine) have a negative geotropic curvature. Studies of their endogenotts auxin content revealed a pattern of correlation: the absence of detectable auxin when the geotropisni was negative. Non-nodulated roots of Myrica exhibited a normal positive geotropic curvature and possessed an auxin content within an anticipated range (10 mg/kg). Root nodules of Alnus species, whose roots exhibit a positive geotropic curvature, contained measurable endogenous auxin (20 mg IAA/kg). The presence of an indoleaectic acid oxidase system in Myrica and Casuarina root nodules has heen described and correlations are drawn between non-detectable endogenous auxin concentrations and high enzymatic activities. It is suggested that the negative geotropic curvature of the nodule-roots of Myrica and Casuarina is due to the presence of a sub-optimal concentration of auxin which in turn results from the activity of an indoleacetic aeid destroying system.