系

In order to the use of the male-sterility quickly, enriching the basic theories of male-sterility,we used the eggplant male sterile lines and their maintainers as materials, to analyze the physilolgical and biochemical characteristics and parthenocarpy by investigation of energy, substance and polyamine metabolism.

为了加快茄子雄性不育的利用进程，丰富茄子雄性不育的基础理论，本试验以雄性不育系及其保持系为试验材料，从能量代谢、物质含量、多胺代谢着手，对与茄子雄性不育性及单性结实有关的生理生化特性进行了分析，试验结果如下： 1 苗期不育系叶片中IAA和GA_3含量的不足，ZR的盈积以及ABA/(IAA+ZR+GA_3)比值的失衡导致了茄子雄性不育系苗期生长缓慢。

The evolutionary relationships were investgated by comparing the results from molecular data alone or molecular data combined morphological characters using different analysis methods: maximum parsimony by PAUP(superscript *) 4.0 and Bayesian inference by MrBayes 3.0B4. Base composition and ti/tv of 28S rDNA D2 regions were analyzed by PAUP(superscript *) 4.0. The results showed that GC content of the 28S rDNA D2 gene sequences of subfamily Euphorinae ranges from 40.00% to 49.25%. Transversion frequency of sequence variable sites among species of Euphorinae was higher than that of transition. The subfamily Euphorinae was proved to be a paraphyletic group with close relationship to subfamilies Neoneurinae and Cenocoelinae; only two tribes, Meterorini and Microctonini, were proved to be monophyletic groups; Centistini, Cosmophorini, Euphorini and Dinocampini were paraphyletic groups; the basal position of tribe Meterorini within Euphorinae was partially supported by our phylogenetic trees, and tribe Microctonini was proved to be a group at the top of the trees.

结果表明：优茧蜂亚科的28S rDNA D2基因序列片段的GC%含量在40.00%~49.25%之间变动，而对于碱基替代情况来讲，优茧蜂亚科各个成员间序列变异位点上颠换大于转换；不同的分析和算法所产生的系统发育树都表明目前根据形态定义出的优茧蜂亚科Euphorinae不是一个单系群，而是一个与蚁茧蜂亚科Neoneurinae和高腹茧蜂亚科Cenocoelinae混杂在一起的并系群；在优茧蜂亚科内部，悬茧蜂族Meterorini和食甲茧蜂族Microctonini（排除猎户茧蜂属Orionis）为单系群，而宽鞘茧蜂族Centistini、大颚茧蜂族Cosmophorini、优茧蜂族Euphorini、瓢虫茧蜂族Dinocampini为并系群；悬茧蜂族Meterorini在优茧蜂亚科Euphorinae内位于基部位置的观点得到部分的支持，同时食甲茧蜂族Microctonini被判定为相对进化的类群。

And the characteristics reacting to temperature and photoperiod are the main problem for application in breeding or not.

光温敏不育系是两系杂交水稻的基础，不育系育性转换的光温反应是不育系能否应用的关键。

We selected 15 representative floras from different climatic zones from north to south, and did DCA ordination between the Reserve flora and them. It showed that both spermatophyte flora and pteridophyte flora of the Reserve were more close to some southern floras, which located in much lower latitudes.

将之与我国不同气候带15代表性地点的植物区系进行DCA排序，发现其种子植物区系与蕨类植物区系组成都与更低纬度的一些区系更相近，表现出强烈的热带残遗性和亲缘性。

RAPD method was used to determine the molecular nature of the variants, and polymorphism, such as OPD05-1250 and OPH16-800 in NaCl-tolerant line of sainfoin and OPA08-1180 and OPH01-760 in ethionine-resistant cell line alfalfa, could be clearly detected among different lines, indicating these variations were caused by the changes in DNA.

用RAPD技术对红豆草和苜蓿几种变异系的DNA多态性进行比较分析，证实红豆草耐盐系中具有OPD05-1250、OPH16-800等多态性产物，苜蓿变异系中具有OPH01-760、OPA08-1180多态性产物。说明变异系中DNA水平发生一定改变。

It has departments of agronomy, horticlture, agricultural resource and environment, soil resource management, biological technology, grass science, and a staff room of plant.

学院拥有农学系、园林系、农业资源与环境系、土地资源管理系、生物技术系、草业科学系和植物教研室6系1室。

The results showed that the P sorption maxima of the soils were in the range of 89 to 1250 mg P kg-1 and were decreased in the order of TTs＞Pc＞Ca＞Eh＞Cf with decreasing amounts of sesquioxide in soils.

结果显示，供试土壤最大吸附量范围从89 到 1250 mg P kg-1，由大到小依序分别为淡水系，平镇系，淇武兰系，二林系，将军系，其游离氧化铁铝含量越高，土壤之磷的最大吸附量也就越大。

The amount of female and male flowers strobilus from 12 families was investigated in Baisha seedling seed orchard of masson's pine from Shanghang County, Fujian Province.

观测了福建省上杭县白沙林场马尾松实生种子园的21个家系花量，分析了家系内与家系间雌雄球花量、各家系雌雄球花量在不同冠层和方位的分布。

It summarizes the current advancements in the aboveOmentioned field in terms of eight aspects :①relations between L2 speech perception and production ,②L2 phonological studies ,③L2 speech segmental studies ,④L2 speech acquisition models ,⑤L2 speech suprasegmental studies ,⑥L1 transfer in L2phonological acquisition ,⑦nonO linguistic factors in L2 phonological acquisition ,and ⑧L2 speech instruction.

本文主要探讨了国外第二语言语音习得研究近年来的进展，着重涉及以下8 个方面：①二语口头话语感知与表达的关系、②二语口头话语的音系学研究、③二语口头话语的语段理论研究、④二语音系理论模型的构建、⑤二语口头话语的超音段研究、⑥二语音系习得中的母语迁移、⑦非语言因素对二语音系习得的影响、⑧二语语音教学研究。

In this article a 3-intersecting system of sets of X,the extension of a 3-intersecting system of sets are defined.

在定义了三交系和三交系的扩充的概念的基础上，得到了几类特殊的三交系判定的充要条件和一类三交系的扩充定理。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。