Abstract:XZ1'and its parents were studied by A-PAGE and RAPD technology.A-PAGE analysis proved that the parents have four different bands,and three of them represent complement in xz1.And in this study,one random primer,with clear and steady bands out of 128 prime

Abstract:选用弱筋小麦品种‘豫麦50’为材料,通过大田试验研究了较高供氮水平下(施纯氮330 kg/hm2)施用低量(S 20 kg/hm2)、中量(S 60 kg/hm2)和高量(S 100 kg/hm2)硫肥对小麦籽粒灌浆特性和产量的影响.结果显示,不同施硫处理的小麦籽粒灌浆进程均“呈慢—快—慢”的S型曲线,拟合的Logistic方程决定系数均大于0.993 2,并达到极显著水平;灌浆持续期(T)、渐增期平均灌浆速率(V1),快增期和缓增期持续期(T2、T3)、灌浆期各阶段干物质积累量(m1、m2、m3)和理论最大千粒重(K)均随施硫量增加而提高,并以中硫处理的各项灌浆参数表现较优;中硫处理的千粒重(46.47 g)和籽粒产量(7 416.0 kg/hm2)显著高于低硫处理,极显著高于对照(不施硫)和高硫处理.表明在当前较高施氮水平下,每公顷施纯硫60 kg可有效改善小麦灌浆特性,显著提高籽粒产量.

Abstract:4-coumarate coenzyme A ligase is one of the key enzymes of lignin biosynthesis in vascular plants.Soluble fused protein of 4-coummarate coenzyme A ligase of Populus tomentosa(Pto4CL1) was acquired by prokaryotic expression system.SDS-PAGE purity Pto4CL1 p

Abstract:To develop the PCR molecular marker detecting the chromatin of Haynaldia villosa,the sequence specific to H.villosa was isolated and then the molecular marker was developed based on its sequence.A PCR fragment specific to H.villosa was detected when PCR w

Abstract:Both mRNA differential display and silver staining techniques were used to isolate Chinese Spring cDNAs induced by low temperature acclimation in wheat seedling stage.A total of 60 differential expressed cDNA fragments were obtained.Eight positive cDNA fr

Abstract:RT-PCR,gene clone,transformation were used to study the function of CIPK1(CBL-interacting protein kinase 1) gene in Arabidopsis.The result showed that CIPK1 gene expressed at high levels in flowers and stems and at low levels in leaves.Moreover,CIPK1 gene

Abstract:以2个辣椒(Capsicum annuum L.)自交系子叶诱导产生的愈伤组织为材料,辣椒枯萎菌粗毒素为选择剂,筛选抗枯萎病辣椒新种质.结果表明,枯萎菌粗毒素对辣椒子叶愈伤组织诱导、生长及不定芽分化具有明显的抑制作用,且随着粗毒素浓度的增加,抑制作用增强;在枯萎菌粗毒素质量浓度为0.60 g·L-1条件下,筛选、鉴定并获得了抗枯萎病辣椒体细胞变异无性系,且成功再生抗性植株.从而证明,离体筛选抗枯萎病辣椒新种质的方法是可行的.

Abstract:The genetic diversity of Oxytropis glabra DC.distributed in the western regions of Inner Mongolia was analyzed using inter simple sequence(ISSR) markers.327 bands were amplified from 6 natural populations by 14 reliable primers.A high level of genetic div

Abstract:XZ1'and its parents were studied by A-PAGE and RAPD technology.A-PAGE analysis proved that the parents have four different bands,and three of them represent complement in xz1.And in this study,one random primer,with clear and steady bands out of 128 prime

Abstract:Morpho-anatomical and cytological studies,molecular analysis were performed on all the six species of Rehmannia.The results showed that the characters of morphology have more taxonomic significance than that of anatomy,such as height of stem,shape of youn

Abstract:At present,sampling strategy is mostly involved in germplasm resources of single species.However,it is also great importance to expound phylogenetic relationship,genetic diversity,and conservation strategies of wild kindred plants.In this paper,Pinus henr

Abstract:The anatomical structure of nutritive organs of two Limonium species growing in salinized soil in Xinjiang were studied by using blade segregation and paraffin method.The observed results are as follows:they belong to typical secret-salt plant.There are a

Abstract:The megasporogenesis,microsporogenesis and development of male and female gametophytes of Bupleurum chinense DC.were studied using method of paraffin section.The results showed as follows:the ovary of B.chinense is anatropous,single integument and thin nu

Abstract:从采自陕西省太白山的唇形科(Labiatae)鼠尾草属(Salvia Linn.)植物荫生鼠尾草(Salvia umbratica Hance)丙酮提取物中分离得到14个五环三萜类化合物,并用现代波谱技术(MS、1H NMR、13C NMR、DEPT)和化学方法进行结构鉴定.结果显示:14个化合物分别为β-香树脂醇(1)、α-香树脂醇(2)、2α,3α-二羟基齐墩果-12-烯-28-酸(3)、3-氧-乌苏-12-烯-28-酸(4)、2α,3β-二羟基齐墩果-12-烯-28-酸(5)、3β,19-二羟基齐墩果-12-烯-28-酸(6)、齐墩果酸(7)、2α,3β-二羟基乌苏-12-烯-28-酸(8)、3β-羟基-11α-甲氧基-齐墩果-12-烯(9)、3β-羟基-11α-甲氧基-乌苏-12-烯(10)、3β,11α-二羟基-齐墩果-12-烯(11)、3β,11α-二羟基-乌苏-12-烯(12)、乌苏酸(13)、3β-羟基齐墩果-10,12-二烯(14).实验结果表明五环三萜类化合物是该植物中的主要成分.

Abstract:The effects of the extract from Cichorium intybus L.roots and inulin on lipid in serum and egg total lipid contents and triglycerides were studied in this experiment.Nick T commercial layers(n=300) were fed diets without the extract from C.intybus roots a

Abstract:研究了高效液相色谱法(HPLC)检测中草药黄精中阿维菌素残留量.以丙酮为提取溶剂,经酸性氧化铝柱层析净化,用紫外检测器(UVD)在245 nm处进行检测,流动相为甲醇-水(体积比为85∶15),流速为1 mL/min.结果表明:阿维菌素在质量浓度为0.01~200μg/mL范围内有良好的线性关系,该方法添加回收率为87.74%~103.47%,变异系数为1.73%~4.43%,检出限为0.01 mg/kg.符合阿维菌素残留的检测要求.

Abstract:The different disease resistant pear cultivars were inoculated with crude toxin isolated from Verturia noshicola.The result showed that the peroxidase(POD) and phenylalanine ammonialyase(PAL) activities,the malondialdehyde(MDA) content and electrical cond

Abstract:以常温（25℃）和低温（4℃）贮藏的迎庆桃果实为试验材料,对其果实硬度、呼吸强度进行了测定,并对微粒体膜Ca^2＋-ATPase、超氧化物歧化酶（SOD）活性、氧自由基变化和膜的伤害程度进行了研究.结果表明,随桃果实衰老,常温贮藏的果实硬度迅速下降、微粒体膜上的Ca^2＋-ATPase活性、SOD活性和O2-产生速率均呈跃变式变化,先升高后降低;膜脂过氧化产物MDA的含量逐渐增加;与常温相比,低温可以抑制果实硬度的下降、呼吸速率、Ca^2＋-ATPase和SOD活性的下降及推迟峰值的出现,同时降低O2^-产生速率和MDA含量.以上结果表明,桃果实衰老与细胞质内Ca^2＋稳态的破坏和膜脂过氧化作用的加强有密切关系.

Abstract:The photosynthetic pigment contents,chlorophyll a/b rate,malondialdehyde(MDA) contents,and superoxide dismutase(SOD),peroxidase(POD),catalase(CAT) activities in the leaves of Pinellia ternata(Thunb.) Breit.which was under different light intensities durin

Abstract:以引进日本的设施栽培专用耐盐茄子品种Torvum Vigor为砧木,栽培品种苏崎茄为接穗,通过营养液栽培对80 mmol·L-1NaCl胁迫下茄子嫁接苗和自根苗的生长和离子分布进行了比较.结果表明,(1)NaCl胁迫下嫁接苗茎伸长受抑制程度显著低于自根苗,嫁接苗根部生长旺盛;(2)嫁接苗根部贮存一定量的Na 、Cl-,地上部除叶柄外各部位Na 、Cl-含量均显著低于自根苗;(3)NaCl胁迫后嫁接苗在幼叶和根部保持较高K /Na 和Ca2 /Na 值;(4)嫁接苗根部选择吸收SK,Na、SCa,Na值和幼叶选择运输SK,Na、SCa,Na值均显著高于自根苗.因此,嫁接茄子因根部Na 、Cl-的贮存,减轻了地上部的盐离子毒害,而且K 和Ca2 在幼叶和根部的特异积累使其K /Na 值和Ca2 /Na 值提高,从而增强了耐盐性.

Abstract:采用营养液水培方法,研究了叶面喷施亚精胺(Spd)对黄瓜幼苗生长和可溶性蛋白的影响.结果表明,外源Spd可使盐胁迫黄瓜幼苗株高、茎粗、叶面积、根长和根表面积显著增加,可溶性蛋白含量明显提高,部分可溶性蛋白的表达量减弱;而对正常生长条件下黄瓜幼苗各生长指标无明显影响,但显著提高了根系中可溶性蛋白的含量.随着Spd处理时间的延续,盐胁迫幼苗至少有7种分子量分别约为67、61.5、50、47、43、29和16 kD的可溶性蛋白表达量发生明显变化,尤其使61.5、47和43 kD蛋白表达量明显减弱,50 kD蛋白甚至消失,这4种蛋白可能与外源Spd缓解黄瓜幼苗盐胁迫伤害效应关系密切.

Abstract:Effects of different Cd2 concentration on growth and respiration of wheat seedling were studied with wheat cultivar 'Zhengzhou 9023' as material.The results showed that:(1) respiratory rate and succinate dehydrogenase(SDH) activities in plumule and root

Abstract:Effects of Cd and Zn combined pollution on the physiological characteristics of Trichosanthes kirilowii Maxim.seedlings were analyzed with the pot experiments.The results showed that the chlorophyll a,b and total chlorophyll contents,soluble saccharide an

Abstract:In sand culture condition,the melon was supplied with different concentrations brackish water at four different developmental stages to study the changes of membrane lipid peroxidation and protective enzyme activities in leaves.The results indicated that

Abstract:The changes of transpiration rate,net photosynthesis in a day and their relationship with various environmental factors were studied in this paper.The results revealed that the transpiration and stomatal conductance were with similar changing tendency in

Abstract:The effects of soil drought stress on photosynthetic characteristics of Sinocalycanthus chinensis leaves were studied by the test of potted 2-years-old Sinocalycanthus chinensis seedlings.The results showed as follows:with the increases in drought stress,

Abstract:对生长在青藏高原东部隶属于23科、49属的71种高山植物(包括多年生和一年生植物)的稳定碳同位素比值、氮含量以及碳/氮比率进行了分析,并以稳定碳同位素比值及碳/氮比率来分别指示植物的水分利用效率和氮素利用效率.结果表明:(1)多年生植物稳定碳同位素比值显著高于一生年植物,而碳/氮比率显著低于一年生植物(P<0.01),氮含量两者无显著性差异.(2)多年生植物和一年生植物的稳定碳同位素比值均与碳/氮比率呈显著负相关(-0.643**和-0.707),而与氮含量均无明显相关性.研究证实,在自然条件下多年生植物的水分利用效率比一年生植物更高,而氮素利用效率却更低;高山植物水分利用效率和氮素利用效率存在明显的权衡",即植物不能同时提高水分利用效率和氮素利用效率,高水分利用效率的代价是降低氮素利用效率,青藏高原不同植物即使在相同环境条件下具有不同适应对策.

Abstract:The effects of exclosure on plant diversity,community height,coverage,above and under ground biomass in Inner Mongolia typical steppe were investigated by quadrat method.The study was conducted in four treatments,viz.,continuous grazed plot(G),2-year old

Abstract:12 species of arbuscular mycorrhizal fungi were identified from the rhizosphere of 4 plants at diggings contaminated by lead and zinc in Feng County in the Qinling Mountains.They were all Glomus.G.constrictum was the dominant species in this area.G.constr

Abstract:Based on the field investigation in 11 major gardens of Suzhou,90 species in 42 genera and 23 families of bryophytes were reported in the present paper,and the species composition,habitat characteristics, floral elements and species difference among the g

Abstract:Based on examinations of type specimens housed at PE,lectotypes for twenty-eight names of Chinese taxa in Angiospermae are here designated under Article 8.1,9.9,9.10 and 37.2,Recommendation 9A.2 and 9A.3 of the International Code of Botanical Nomenclature

Abstract:This paper screened the best one from 5 kinds of macro-porous resins for the isolation and purification of aubergine red pigment.The single factor tests,orthogonal experimental designs and variance analyses were applied to select the optimize manipulation

Abstract:The essential oils of Pteroxygonum giraldii Dammer et Diels and Polygonum amplexicaule D.Don var.sinense Forb.were extracted by hydrodistillation.The components of the two essential oils were separated and identified by GC-MS spectrometry,and the relative

Abstract:选用弱筋小麦品种‘豫麦50’为材料，通过大田试验研究了较高供氮水平下（施纯氮330kg／hm^2）施用低量（S20kg／hm^2）、中量（S60kg／hm^2）和高量（S100kg／hm^2）硫肥对小麦籽粒灌浆特性和产量的影响。结果显示，不同施硫处理的小麦籽粒灌浆进程均呈“慢-快-慢”的S型曲线，拟合的Logistic方程决定系数均大于0．9932，并达到极显著水平；灌浆持续期（T）、渐增期平均灌浆速率（V1），快增期和缓增期持续期（T2、T3）、灌浆期各阶段干物质积累量（m1、m2、m3）和理论最大千粒重（K）均随施硫量增加而提高，并以中硫处理的各项灌浆参数表现较优；中硫处理的千粒重（46．47g）和籽粒产量（7416．0kg／hm^2）显著高于低硫处理，极显著高于对照（不施硫）和高硫处理。表明在当前较高施氮水平下，每公顷施纯硫60kg可有效改善小麦灌浆特性，显著提高籽粒产量。

Abstract:The paper statistically analyzes the source-related basic data of papers published in Acta Botanica Boreali-Occidentalia Sinica in 2004~2006, which indicates that since 2004, the contributions to Acta Botanica Boreali-Occidentalia Sinica have increased ye

Abstract:MicroRNAs,with the length of 20~24 nt, are noncoding RNAs that widely exist in plant. As a group of negative regulators, they can control gene expression in the level of posttranscriptional regulation, by guiding the cleavages of target mRNAs or by inhibi