Abstract:A nucleotide sequence of plasmid pSB166 carrying promotor ED35s,Omega TMV translation enhancer and nopaline synthase terminator was specifically cloned into plasmid pCAMBIA1303 to construct intermediate vector pWR306;stilbene synthase gene and aldehyde de

Abstract:It is important to establish an efficient regeneration system for genetically transformation of grapevines.By manipulating hormone levels,light intensities and temperature,we have developed two successful regeneration systems for the winegrape varieties '

Abstract:Meiated with Agrobacterium tumefaciens,the gomphsis gene P_(SAG12)-ipt was transferred into cherry tomato plants and then 17 transgenic plants of cherry tomato were obtained by double PCR and Southern blotting.The field test of the transgenic plants showe

Abstract:RAPD analysis was employed to analyze 34 chili (pimiento) varieties and its 22 random primers amplified 119 bands of which six seven were polymorphic.Nei's method,Jaccard's method,and Euclidean distance method were adopted to calculate the matrixes of the

Abstract:金钱槭(Dipteronia sinensis Oliv．)隶属于槭树科金钱槭属，为中国特有的寡种属植物之一。金钱槭为落叶乔木，高可达10m，具裸露的冬芽。奇数羽状复叶对生，通常具7～11枚小叶。花白色，杂性，雄花与两性花同株，形成圆锥花序。翅果周围环绕着圆形的翅，嫩时粉红色，成熟时棕黄色，状如古钱。金钱槭分布于陕西、甘肃、湖北、河南、四川、贵州等省，被列为中国三级保护植物。

Abstract:26 primers that could be stably amplified were selected from 300 random primers and were used to amplify the DNA of 21 cucumber accessions including our newly breed cultivar 'Chunyu'.Eighty bands showed polymorphism among the 173 amplified bands.The perce

Abstract:RNA was extracted and separated from the fresh leaves of Leymus multicaulis plants under salt stress and then primers were designed according to two conserved regions of glutathione reductase reported in many species.And a ban of about 400 bp was obtained

Abstract:Puccinellia tenuiflora cDNA was labeled with fluorescence dyes Cy5-dCPT and Cy3-dCPT to form a probe by means of reverse transcription and then hybridized with gene chips carrying Puccinellia tenuiflora genes so as to study the gene expressions of Puccine

Abstract:524 random primers were used in RAPD analysis to amplify genomes of three scab-resistant varieties and four scab-susceptible varieties and three of them were found to show stable polymorphism in both the scab-resistant and -susceptible varieties.The polym

Abstract:用具提莫菲维小麦细胞质的六倍体小黑麦的3个不育系和3个恢复系作为亲本,进行3×3不完全双列杂交,对所组配的F1代8个农艺性状的杂种优势分析结果表明,除千粒重外,其余性状出现正向超亲优势的组合较少,多数呈低亲或中亲遗传,且各组合间的差异比较显著。配合力分析表明,一般配合力与特殊配合力的方差均达到了显著水平,F1各性状均受基因加性效应和非加性效应共同作用;从总体上看,不育系A1、A2及恢复系R1、R2的一般配合力良好,其配制的组合优势较强,具一定的利用价值。对一般配合力与亲本表型值进行了相关分析,二者无显著的相关关系。

Abstract:Five short season cultivars with no premature senescence were selected to cross with 5 SSC cultivars with premature senescence.The parents,F_1 and F_2 from the reciprocal crosses were field tested in replicated trials in 2001 and 2002.the results indicate

Abstract:通过对采用杂交育种方法选育出的白杨无性系生根性状进行研究。结果表明，新无性系在最早生根时间、主侧根总数量、主侧根总长度等指标上均存在极显著差异，说明各无性系的生根能力具有显著差异。主根平均根数和侧根平均根数两个性状的遗传方差均大于环境方差，其重复力分别可达95％和87％。进一步分析结果表明易生根的无性系根原基数量最多，平均每段插穗约14．7～7．3个．而较难生根的无性系平均每段插穗约5．5～6．8个，难生根的毛白杨根原基数量最少，平均每段插穗约3．3个。通过层次分析法(AHP)对各无性系生根特性的综合评价结果表明：9606、9603、9608、9607、9614、9610、9602等7个无性系生根能力均优于其亲本和毛白杨。

Abstract:We investigated the development on the seedling of the Salsola collina Pall.by utilizing experimental such protocols as tissue cleaning,paraffin sectioning,scanning electron microscope and transmission electron microscope.The results included that single

Abstract:Whole morphologies and ultra-structures of the pistils of Asarum henryi at their different developmental stages were investigated and observed by microscopic sectioning,respectively,showing that the pistils formed distinct carpel without differentiating i

Abstract:Semi-thin section,histochemical methods and transmission electron microscopy were adopted to examine the storage location of catalpol and the ultrastructure of catalpol-storing cells in tuberous roots of Rehmannia glutinosa f.huechingensi.The results show

Abstract:The rhizobia in the root nodules of Alhagi sparsifolia were studied by transmission electron microscopy.The results indicated that the size,shape,distribution and fine structures of the rhizobia were related with the stage host cell development.The rhizob

Abstract:Treated with NaCl at different concentrations,the seedlings of fig and Chinese flowering crabapple showed significant differences in NaCl tolerance.The seedlings of fig had a lower NaCl tolerance than those of Chinese flowering crabapple and thus the wilt

Abstract:以‘迎庆’桃果实为材料，研究了经外源乙烯(50μL／L)处理12h后，在常温(25℃)下贮藏过程中，果实微粒体膜Ca^2 - ATPase活性和膜脂过氧化水平的变化。结果表明：外源乙烯促进果实内源乙烯的生成，刺激膜Ca^2 - ATPase活性先上升而后下降，同时加速超氧自由基的产生．提高膜脂过氧化产物丙二醛含量．增强了膜脂过氧化作用；钙调素拮抗剂二氟拉嗪(TFP)和钙通道阻塞剂异博定(VER)均在一定程度上抑制乙烯诱导的上述效应，这表明细胞内Ca^2 和CaM参与了外源乙烯反应。

Abstract:A hydroponic experiment was conducted to study the effect of yttrium on physiological characteristics of maize seedlings and then analyze yttrium regulation to water use efficiency of maize seedlings.The results demonstrated that the root lengthen and roo

Abstract:The apparent starch contents of forty eight potato varieties and the amylose contents of their tubers and starches were determined,and then the correlations between the apparent starch contents and the tuber smylose contents as well as the correlation bet

Abstract:Pathogenicity of Gaeumannomyces graminis var.tritici (Ggt),Gaeumannomyces graminis var.avenae (Gga),Gaeumannomyces graminis var.maydis (Ggm) and Gaeumannomyces graminis var.graminis (Ggg) to four species of gramineal grasses,Dactylis glomerata,Elymus dahu

Abstract:以“佳粉15”和“粉红908”番茄为试材，分别采用热空气处理和多胺生物合成抑制剂(D-精氨酸和二环己胺)处理，然后于2℃(冷害温度)下贮藏。结果表明，热处理和2种多胺抑制剂处理都可以降低番茄的冷害指数和呼吸速率，抑制呼吸高峰的出现，并抑制多胺的合成。腐胺含量与冷害之间相关性分析的结果表明，多胺合成抑制剂结合热处理是通过改变果实腐胺的生物合成或分解代谢实现其减轻冷害作用的。

Abstract:At Taibai Qinling Mountain 12 Larix chinensis population stands were set up using the idea of the Orthogon experimental design.Stands were investigated by sampling method.5 ecological factors influencing forest's distribution were analyzed by Orthogon ana

Abstract:This paper was aimed to the different stage of abandoned fields at Waterhead Region of Middle Route South-to-North Water Transfer Project.The community characteristics and vegetation succession laws during it's herbaceous vegetation restoration have been

Abstract:The similarity hypothesis may explain how biodiversity loss influences variability in biomass of plant communities but remains untested.We collected data over a three-year period (1999~2001),at the end of July during the peak of plant growing season,from

Abstract:Two-way indicator species analysis and detrended correspondence analysis were adopted to conduct the multi-analysis of the florae in the region covered by the Xiangshan Mountains of Ningxia,the key production area of Zhongwei fur goats (Zhongwei goat).Acc

Abstract:In mountainous regions of southeast Shanxi province,the seed plants oblong to 974 species,125 families and 456 genera of which gymnosperms occupy 15 species,11 genera and seven families,and angiosperms occupy 959 species,445 g enera and 118 families (of w

Abstract:An experiment was carried out to exploit drip irrigation with highly-mineralized water (28 g/L) for afforestation in the Xiaotang prefecture located on the northern boundary region of Taklimakan Desert in 2003.Root digging was adopted to study the undergr

Abstract:A randomized block design was adopted to study growing characteristics,winter-survival rate and hay yield of alfalfa sown in dryland-farming regions of southern Ningxia province on different dates.The results showed that the emergence rate of alfalfa seed

Abstract:Tamarix ramosissima,one of the most widely distributed plants of its genus,belonged to the key species for maintaining desert ecosystems in arid regions of China.The study adopted dendrochronology and stem analysis to preliminarily exmine such characteris

Abstract:The experiment was carried out to study the endo-dormancy-breaking effects of thiourea and GA_3 at different concentrations on ornamental peach cultivars,"Yingchun","Mantianhong" and "Juhuatao",at different growth stages.The result showed that: (1) The tr

Abstract:Oxytropis aciphylla Ledeb.f.albiflora Z.Y.Chang,Z.H.Wu et L.R.Xu,a new form of Leguminosae from China is described.It differs from the typical form,O.aciphylla Ledeb.f.aciphylla,by having white flowers,which is quite stable and randomly occurs in populati

Abstract:The genus Piper Linn.(Piperaceae) and the species P.bambusifolium Y.C.Tseng are reported as new records of Shaanxi Province.

Abstract:Indoor Petri dish bioassay was adopted to study allelopathy actions of Artemisia annua L.and the results showed that the estract solution of Artemisia annua L.by water remarkably inhibited the growth of wheat seedlings and this inhibited became strong as

Abstract:Several investigation in field showed that the declination of quality and quantity were becoming obvious after a long term continuous cropping of Salvia miltiorrhiza Bunge.The main representation included the rate of dried seedling during June and Septemb

Abstract:本实验研究了不同提取条件对苦荞籽粒中芦丁含量的影响，经HPLC分析，浓度高于40％(v／v)的乙醇对芦丁降解酶有明显的抑制作用，其中90％乙醇的抑制作用最强。苦荞粉与水接触的时间强烈影响芦丁的含量．接触1min芦丁含量迅速由原来的79．72％下降到32．21％，即约60％的芦丁被降解。在pH1．0～11．0范围内．芦丁降解酶具有很强的抗酸碱性。当温度大于60℃时．芦丁降解酶开始缓慢失活，芦丁得以较好保存．高于70℃时芦丁保存率更高；当温度为90℃，芦丁保存率约为对照值的80％。该研究结果对于苦荞芦丁的提取和苦荞食品的加工具有重要的理论意义和实际指导价值。

Abstract:The essential oil from the Seriphidium transiliense was extracted by steam distillation method,the chemical constituents of the volatile oil were identified by means of capillary gas chromatography and combined gas chromatography-mass spectrometry.The res

Abstract:Using the rose garden in the Taoranting Park located in Beijing as its subject,the case study adopted such methods as DCA,TWINSPAN and Comprehensive index system to quantitatively study the ecological relationship of garden plants.The results showed that

Abstract:根据笔者实测的青海高原高寒地区300余种植物稳定性碳同位素比值(δ^13C)以及参阅已经发表过的国内外不同地区的δ^13C植物名录，整理出青海高原高寒地区3500余种植物中的δ^13C植物。得出青海高原高寒地区共有9科32属的52种植物属于δ^13C植物，禾本科(Gramineae)18属24种，藜科(Chenopodiaceae)9属20种，苋科(Amaranthaceae)1属4种，菊科(Compositae)2属3种，大戟科(Euphorbiaceae)、蒺藜科(Zygophyllaceae)、旋花科(Convolvulaceae)、景天科(Crassulaceae)、眼子菜科(Potamogetonaceae)各1属1种。同时归纳了52种C4植物的生活型以及地理分布区。

Abstract:Achievements made in the taxonomics,flora geography and phylogeny of the genus Hedysarum were reviewed in this paper since the Fedtschenko monographic' work,and so emphasis on the domain and strength engaged in the future were proposed based on the curren

Abstract:Ceratophyllaceae consists seven species and one genus and distributes all over the world.Morphological researches reveal that it has many traits,which cannot be easily explained compared with other species.The latest researches in phylogenetics indicate t