Abstract:Traits of plant diversity in a hillclosed and afforested sequence of Pinus tabulaeformis stands in Huanglong Mountains were preliminarily analyzed.The findings show as following.With hillclosing and afforestation ages incensement,species richness in three

Abstract:After analysis of utilization conditions,productive features,ecological service value and main function of each grassland type in the regional development,this study pointed out that classification management for grassland is effective way to sustainable

Abstract:The fractal properties of spatial pattern of Alsophila spinulosa Tryon population in Mopangou,Fuling were studied by using information dimension of fractal theory.The results showed that distribution pattern of Alsophila spinulosa population possesses fra

Abstract:Twelve species and one variety are reported as new records to ten provinces in China,i.e.Hemerocallis esculenta Koidz.(Liliaceae) for Jilin,Myricaria squamosa Desv.(Tamaricaceae),Viola monbergii W.Beck.(Violaceae) and Glaux maritima Linn.(Primulaceae) for

Abstract:Epipogium aphyllum (F. W. Schmidt) Sw. in Sum. Veg. Stand. 32. 1814;S. C. Chen in S. C.Chen,F1. Reip. Pop. Sin. 18.44. 1999.

Abstract:Using hybrid wheat 901,the father restorer line R205,the mother plant K3314A and general wheat Shaan 229 (control),collecting samples during 15 to 20 days after anthesis,wax slicing technique and micro-structure determination methods were used to study th

Abstract:The stomata characteristics of leaves of three rice strains 52-7,51-15 and 51-22 with BADH cDNA were studied by ESM.The results showed 52-7 had characteristics of micro-stomata,little-stomata on leaves but had not clear edging-superior effectivity of stom

Abstract:The anatomical structure of the leaves in cuttings of five brushes was observed and studied in this paper.Ratio of palisade tissues to spongy tissues,extent of the cell concentration of the first palisade layer,density of the lateral vascular bundle,thick

Abstract:The thermo-sensitive male-sterile wheat line A3314,which was bred by applying the technology of Chinese invention patent ZL00105488.0,were conducted through multi-locus,multi-locus sowing at different time.Analysis on the findings of these experiments sho

Abstract:The research was carried out on the canopy morphology structure of high-yield wheat cultivars and correlation analysis between these morphology structure and yield characters of 9 wheat cultivars with different spike types in Guanzhong district of Shaanxi

Abstract:The chromosome arm 1RS distribution in 138 major cultivars and lines in Huanghuai wheat zone was investigated by the PCR marker of 1RS,NOR-R1.The result showed that there were 42.0% of the detected cultivars and lines carrying 1RS chromosome arm.The wheat

Abstract:Cereal aphid Sitobion avenae Fab. resistance on three winter wheat cultivars (Astron,Batis and Xanthos,come from Germany) that has introduced into China had been investigated in lab and field,The control winter wheat cultivars are Xiaoyan-22 (it's a dista

Abstract:The main quality traits and its relationship with yield traits were analyzed using a population of recombinant inbred lines (RIL).The population showed big variation range in quality and yield traits.Majority correlation coefficients within protein traits

Abstract:During grain formation of three common wheat cultivars from Shandong province,the subunits coded by Glu-D1 and Glu-B1 locus appeared firstly,at the time of 13 days after flowering;the subunit 1 coded by Glu-A1 appeared lastly.The forming time is different

Abstract:The activities of IAA oxidase and cytokinin oxidase were studied during the senescence induced by inorganic nutrition deprivation using detached rape cotyledons.Under light conditions,the detached cotyledons showed typical characteristics of aging after a

Abstract:In this sand culture experiment,Helianthus tuberosus L.seedlings of 20 days were treated with different concentrations of NaCl and iso-osmotic PEG solutions (osmotic potential is about -0.44 MPa).The content of Na~+,K~+ and Cl~- in root,stem and leaf,the

Abstract:To study the function and adaptive mechanism of tonoplast H~+-ATPase under salt stress,Populus euphratica suspension cultured cells were treated with 50 mmol/L NaCl for 10 days,the ATP,PPiase hydrolytic activity and the proton transport activity increased

Abstract:By water alterating at different stage,effect of water deficit and rewatering on yield and photosynthesis were studied in five wheat genotypes.The result indicated that it's sensitive to water deficit at jointing stage,which led to yield decreasing obviou

Abstract:Difference with water parameters and droght-resistance of Populus euphratica Oliv.and P.pruinosa Schrenk.are preliminary studied by using P-V technique under cultivation condition.The result showed that the mainly water parameters of P.pruinosa Schrenk.we

Abstract:以4～6个月的实生苗茎段为外植体,研究了离体条件下培养基及激素对栓皮栎器官发生和植株再生的影响。结果表明:初代培养选用低盐培养基WPM、BTM和GD,附加0.2mg·L-16-BA,丛生芽较多,茎粗壮,生长势健壮,均好于高盐培养基MS。继代培养时,以BTM为基本培养基,添加0.2～0.6mg·L-16-BA有利于茎芽增殖和生长,当6-BA浓度为0.8～1.0mg·L-1时,不利于茎芽伸长。以WPM为基本培养基,附加NAA0.1mg·L-1和IBA0.25mg·L-1时,生根率高,根系发育好。

Abstract:The immature embryos and callus of elite inbred 501,one of the parents of commercial hybrid "Jingyu 7 (501/Jing 24)",were bombarded with the plasmid carrying GFMCry1A by microprojectile bombardment.Transformants were obtained from resistant callus on sele

Abstract:Brazzein gene devised by preference condon of E.coli was successfully synthesized through polymerase chain reation (PCR),then it was cloned into prokaryotic expression vector pET30a(+) and expressed in E.coli BL21(DE3) host cells.Upon induction with IPTG,

Abstract:The effect of selenium on the nutritional components of Ganoderma lucidum (GL) such as polysaccharides,proteins,amino acids,and mineral elements was studied using Se-enriched Ganoderma lucidum (Se-GL) of different Se content as tested samples.The Se-enric

Abstract:Eighty-seven strains of endophytic fungi belong to 14 genus were isolated and morphologically identified from the roots,stems and leaves of Ficus carica.35 strains of 8 genera were isolated in roots,37 strains of 10 genera in stems,and 15 strains of 3 gen

Abstract:The roles of phospholipase A_2 (PLA_2) in production of reactive oxygen species in fungal elicitor-induced Taxus chinensis cultures were investigated.The results showed that the nonspecific inhibitor of PLA_2 reduced elicitor-induced H_2O_2 accumulation,a

Abstract:利用硅胶柱层析、Sephadex LH-20和MCI等分离和纯化手段，从产于青海的菊科风毛菊属植物尖苞雪莲的全草中，分离得到5个化合物，经IR、NMR(1D、2D)、MS等现代波谱技术鉴定它们为芦丁、槲皮素-5-O-β-D-葡萄糖苷、丁香苷、胡萝卜苷和β-谷甾醇，其化学成分为首次报道。

Abstract:从细穗玄参(Scrofella chinensis Maxim．)全草中分离并鉴定了8个化合物。利用光谱(MS、NMR、UV)和化学方法分别鉴定为5，7，3′-三羟基-4′-甲氧基黄酮(1)、3，5-二羟基-7，4′-二甲氧基黄酮(2)、5，6，7-三羟基-4′-甲氧基黄酮(3)、β-谷甾醇(4)、胡萝卜苷(5)、对甲氧基苯甲酸(6)、对苯酚(7)及二十九碳脂肪酸(8)。8个化合物均为首次从该植物中发现。

Abstract:对青藏高原和云贵高原的15种獐牙菜属植物进行了3种苦味苷，即獐牙菜苦苷(swertiamarin)、龙胆苦苷(gentiopicroside)、苦龙苷(amarogentin)、一种黄酮苷-当药黄素(swertisin)、及5种口山酮苷-芒果苷(mangiferin)、当药醇苷(swertianolin)、7-O-[a-L-吡喃鼠李糖-(1→2)-β-D-吡喃木糖]-1，8-二羟基-3-甲氧基口山酮(7-O-[a-L-rhamnopyranosyl-(1-2)-β-D-xylopyranosyl]-1，8-dihydroxy-3-methoxyxanthone)、7-O-β-D-吡喃木糖-1，8-二羟基-3-甲氧基口山酮(7-O-β-D-xylopyranosyl-1，8-dihydroxy-3-methoxyxanthone)、3-O-β-D-吡喃葡萄糖-1，8-二羟基-5-甲氧基口山酮(3-O-β-D-glucopyranosyl-1，8-dihydroxy-5-methoxyxanth-one)等9种主要药效成分同时进行了高效液相色谱的含量测定(Kromasil C18柱，甲醇一水梯度洗脱，二级管阵列检测)；并对其主要药效成分的分布进行了比较。

Abstract:华山松籽油中富含不饱和脂肪酸，尤其是亚油酸。采用尿素包合法对华山松籽油中的多不饱和脂肪酸进行分离。一次尿素包合后气相色谱(GC)分析华山松籽油亚油酸从63％增加到93％，油酸由26％减少到6％，不饱和脂肪总量提高到99．9％。尿素包合法能有效地分离华山松籽油中的多不饱和脂肪酸，其较理想的包合条件为：乙醇作溶剂，脂肪酸、尿素的比为1；1．5，包合温度为5℃。

Abstract:Analysis for accumulating rule of primary fatty acids,proteins and sugar in the seeds of 82(50) Linum usitatissimum cv.were conducted.The results indicated that,in the process of maturing of seeds,palmitate and linoleate contents declined continually unti

Abstract:The compatibility of medicine of two Chinese traditional herbs,Eucommia ulmoides and Zizyphus was studied,and it was found that Zizyphus embed the bitter taste and improved the restorative function of Eucommia ulmoides when their extract were compound.The

Abstract:以鳞片为外植体,建立了秦岭野百合(LiliumbrowniiF.E.Brown)植株再生体系。结果表明愈伤组织诱导的最适培养基为MS+6-BA1.0mg·L-1+NAA0.1mg·L-1,最适继代培养基为MS+6-BA0.5mg·L-1+NAA0.1mg·L-1,幼苗根诱导的最适培养基为1/2MS+IBA0.3mg·L-1。随着培养时间的延长,生根率会不断提高,培养到30d,生根率可达100%。

Abstract:Tissue culture about rare plant Gymnocarpos przewalskii has been carried out.The calli from hypocotyl of Gymnocarpos przewalskii could be induced and plantlet were regenerated on MS medium.Hormone kinds and their concentration in MS medium was the decisiv

Abstract:根据作者实验室的研究工作结合国内外的研究动态讨论热激信号转导的Ca2 -CaM途径。作者实验室的工作表明，钙一钙调素(Ca^2 -CaM)信号系统参与植物热激信号转导。激光共聚焦扫描显微镜的观察结果表明，37℃热激可引起小麦胞内自由Ca。’浓度迅速提高。在Ca^2 存在条件下，热激也引起小麦CaM基因CaM1-2表达及CaM蛋白含量增加。Ca^2 可促进小麦热激基因hsp26和mp70表达和热激蛋白合成，而Ca^2 螯合剂EGTA、Ca^2 通道阻断剂异搏定和LaCl3、CaM抑制剂W7、TFP和CPZ明显降低热激基因hsp26和mp70表达和热激蛋白合成。EGTA、异搏定、TFP或CPZ也阻止小麦耐热性的获得。小麦CaM基因与热激基因的表达动力学研究表明CaM位于热激信号转导的上游，而Ca^2 是启动热激反应的胞内关键因子。凝胶阻滞分析的结果表明，Ca^2 -CaM在热激信号转导中的作用是通过激活热激转录因子的DNA结合活性来实现的。根据大量实验证据，作者提出在植物细胞内存在一条新的热激信号转导途径——钙一钙调素途径。

Abstract:The chief methods of transformation of plant protoplasts and the achievements were introduced in this paper.Some questions and further improvements in the process of transformation were also put forward.The methods of transformation of plant protoplasts m

Abstract:摘要：强光对高等植物的光合作用具有抑制和破坏作用，光抑制的原初部位及主要部位在PSⅡ。综述了高等植物PSⅡ的光破坏的分子机理及其保护机制研究进展，提出了今后进一步研究的方向。

Abstract:Six iron-transporters of the ZIP gene family,a novel iron transporter family first identified in plants,are capable of transporting a variety of cations,including iron,manganese,zinc,cadmium.They display high identical amino-acid residures to the IRT_1 pr

Abstract:Nitrate metabolism is one of the most important object turnovers.In the all pathways of nitrate metabolism,nitrate reductase is the key enzyme and it catalyzes the step from NO~-_3 to NO~-_2.NO~-_3 and light show great effects on the expression of gene th

Abstract:Sorbitol-6-phosphate dehydrogenase(S6PDH),sorbitol dehydrogenase(SDH) and sorbitol oxidase (SOX) are the key enzymes involved in the processing of sorbitol metabolism in the most plants in Rosaceae.The research advances in these enzymes were reviewed in t