Abstract:小麦种子用1mg·L-1的烯效唑浸种，其幼苗茎秆矮化粗壮，叶色浓绿，根系发达。处理植株的内源GA含量剧烈下降，根系中尤为明显。地上部分的IAA含量有较大增高。ZRs含量在幼苗生长前期的地上部分也有增加，但在根系中却稍低于对照。整个植株ABA含量与对照无显著差异。结果表明：烯效唑可能通过改变内源激素水平间的平稳关系而调控植株的形态变化，其中内源IAA／GA比增高是烯效唑诱导小麦矮化和促进根系生长的主要原因。IAA、ZRs的变化对植物横向生长、叶绿素合成也有促进作用。

Abstract:The paper repots the microstructure features of the seeds of 2 populations and 5 different collecting date in Ammopiptanthus mongolicus (Maxim. ) Cheng f. under microscope and scanning electron-microscope. By energy dispersion spectroscopy (DES )method th

Abstract:Through surveying the vigour of germination (VG) and germination percentage (GP),measuring the conductivity,determining the content of peroxide (CP) and the activity of hydrogen peroxidase (AHP) of maize interlinear hybreds and inbred lines seeds which ha

Abstract:When DNA of Elytrigia elongata was introduced into common wheat,a great rang of different kinds of variation occurred in the progenies of receptor,and two good rust resistant sister variants were obtained. RAPD verification was done among two variants, do

Abstract:对C3植物黄豆（Glycinemax）和C4植物玉米（Zeamays）的光合、蒸腾以及水分利用效率（WUE）进行了比较研究。结果表明，玉米WUE水平约为黄豆的2倍，这与两种植物的光合速率水平相一致，说明植物叶片的WUE主要决定于其光合速率大小。通过环境条件对两种植物的影响分析可知，玉米WUE在0-1000μmol·m-2·s-1光强范围内与光合有效辐射（PAR）呈线形关系，最适温度为29℃左右；黄豆WUE在0-　1200mol·m-2·s-1光强范围内与PAR呈线形关系，最适温度为32℃左右。

Abstract:The abnormality and development of anther in Rheum palmatum L. has been observed. The main results are as follows:The anther is tetrasporangiate and its wall development conforms to the monocotyledonous type. The tapetum is glandular type. Simultaneous cy

Abstract:研究了水分胁迫对玉米（ZeamaysL，新玉4号）叶片类囊体膜的蛋白、色素组分，以及PSⅠ、PSⅡ和Cytb／f复合物的影响。类囊体膜蛋白电泳显示水分胁迫使总膜蛋白含量下降。高效液相色谱分析表明水分胁迫也引起类囊体膜色素成分的改变。通过测定P700及各种细胞色素的含量计算所得的PSⅠ、PSⅡ和Cytb／f复合物成分表明PSⅠ对水分胁迫不敏感，Cytb／f复合物在严重水分胁迫时才受到影响，而PSⅡ在中度和严重水分胁迫时均受到较明显的影响。

Abstract:In this paper,essential oil and extract were studied which extracted from plant of Leontopodium haplophylloides with two different ways of SED and extraction. According to the analysis, it contained 0. 037% essential oil, 1. 18% extract, 53. 4% absoluted

Abstract:The 55 free-pllinated families of Nitraria tangutorum which reflect the changes of the ecological characteristics of Minqin county of Gansu Province were collected and cultivated. The growths of annual plants,biennial plants and triennial plants of the 55

Abstract:分离纯化旱生植物柠条的叶细胞质膜，测定其Ca2＋-ATPase的最适反应pH、最适反应温度、底物ATP和激活剂Ca2＋对酶活性的影响，并与中生植物小麦叶细胞质膜Ca2＋-ATPase的性质进行比较。实验表明柠条叶细胞质膜Ca2＋-ATPase的最适反应pH为7．5，最适反应温度为55℃，酶对ATP的Hill系数为0．94，符合米氏动力学类型，对Ca2＋的Hill系数为0．35，具有负协同作用。还测定了柠条和小麦叶片中及叶细胞质膜结合的钙调素含量，发现钙调素含量与植物的抗旱性成正相关。

Abstract:The plants of honeysuckle family have 8 genera and 59 species, 8 varieties and 3subspecies,but not include cultivated 1 genus and 4 species in Gansu province. The author calculated the similarity coefficient of the plants of honeysuckle family about Gansu

Abstract:The present paper deals with analysis of the historical succession of vegetation in Lanzhou Region. From this,We know that there are mainly composed of five types since the Early Pleistocene: (1 ) Steppe,mainly discovered in loess flat-topped ridge and gu

Abstract:The leaves and roots of both resistant-drought and non-resistant drought wheat seedlings became increase in production of E and accumulation of Put. Spd and Spm under osmotic stress of 1 MPa PEG solution. Together with 2 mmol Co++ treating them for 6 or 1

Abstract:In this paper,the leaf epidermal hairs of 28 species and varletes of the genus Potentilla in China were observed under microscope and stero microscope. The conclusions are as follows: 1. 4 types of leaf epidermal hairs were fund among the oberseved taxon,

Abstract:将暗中（4±1℃）低温胁迫12h的菜豆幼苗分别置于中温弱光（15℃±1℃，72μmol·m-2·s-1）、高温强光（20℃±3℃，224-340μmol·m-2·s-1）、低温弱光（4℃±1℃，72μmol·m-2·s-1）3种条件下进行处理，结果发现2d中低温弱光和高温强光下菜豆幼苗的MDA含量不断上升，其SOD、POD、CAT酶活力也维持在较低水平．质膜外渗电导率在处理第1天时上升到最大，之后缓慢下降。而中温弱光条件下的菜豆幼苗MDA含量上升较少，SOD、POD、CAT酶活力恢复较快，质膜外渗电导率在2d后即接近正常值，菜豆幼苗冷害恢复较迅速。施用低温保护剂Mefluidide可减轻菜豆幼苗冷伤害并加快其恢复。

Abstract:试验分别用抗寒剂（K1）、PP333（P）、（K2）溶液喷洒黄瓜幼苗。在零上低温6℃光照条件下培养1、3、5d，测定膜脂过氧化水平和其它相关的生理指标。结果表明：黄瓜幼苗真叶组织中超氧物歧化酶（SOD）活性下降；膜脂过氧化产物丙二醛（MDA）累积量增加；叶绿素含量降低；细胞质相对膜透性增大。受伤害程度随着低温时间的延长而加深。当胁迫1d常温恢复3d后SOD活性和叶绿素含量继续降低；MDA含量和膜透性恢复到接近零时水平。当胁迫3d，恢复3d后几个指标伤害程度都有不同程度的加深。结果还表明：几种药物处理的黄瓜幼苗比对照的受伤害程度有所减轻，其中以K2效果最为显著。

Abstract:The maize (Zea mays L. ) seeds are soaked in the water which was magnetized under different magnetic intensity and in different period of time for 12 hours. After that,they were fostered in the sand beds by the knop's solution,the maize seed's prouting an

Abstract:自猫儿瓜（DecaisneafargesiiFranch）根中分离出10种单体化合物。本文报道其中3种化合物的结构鉴定，经化学方法和光谱解析鉴定为本通皂甙PG（Ⅰ），川续断皂甙B（Ⅱ），木通皂甙PK（Ⅲ），Ⅰ、Ⅱ和Ⅲ均为首次从植物中获得。

Abstract:Cansuhexi is in of China. There are 200 species of wild economic plant which belongs to 50 families. 38 families 85 species of wild economic plants with representativeness and high use value were presented;the use of some wild economic plants were valued;

Abstract:It was an important turning point of cell differentiation to transform somatic cell into embryonic cell during somatic embryogenesis of plant. Therefore,it was very important to study cell differentiation of embryonic cell. In view of this,the subject of

Abstract:The components of glycyrrhizin in five kinds of Glycyrrhiza were determined by dual-wavelength scanning under the same growing conditions and during the same growing period of time,the effect of collecting time to the components of glycyrrhizin was analys

Abstract:Nitraria tangutorum,a bush belonging to Nitraria genus in Zygophyllaceae,is one of elite plants for desert control and a potential plant for utilization as well in arid and semi-arid areas. Its 4 seed sources had been introducted from Delinha in Qinghai,T

Abstract:In order to provide evidence for developing, utilizing and protecting Thalictrum baicalense Turcz.,its distribution,functional effect,ecological habits and biological characteristics were discribed, and cultivating technique about turning wild Thalictrum

Abstract:Both endogenous polyamine content and ethylene production in wheat seedling apparently increased under osmotic stress. Besides all above,with 0. 4 mmol Met participating in the wheat seedlings,the ethylene production speeded up,the spermine content took f

Abstract:This study mainly reports the influence of acidity, heat, light, amylum, carbohydrate,ascorbic acid,benzoic acid natrium and metal ion on the purple pigment's stability of Nopalxochia ackermannii. The results are as follows:the pigment is stable in acidit

Abstract:On the basis of artificial irrigation water characteristics of 5 fruit trees with two different irrigation treatments,normal irrigation and controlled irrigation,had been studied workable in Minqin desert area. The result showed that it was that irrigated

Abstract:The structure and development,process about glandular hairs of Rhus typhina Torner. were studied in this paper,the results indicate that the capitate hairs consisted of one base cell,three stalk cell and unicelled head.

Abstract:The young "Delicious" apple tree with stronger overwintering was used as control,the young "Golden Delicious" apple tree with pool overwintering was treated of paclobutrazol. The change in peroxidase isoenzymes in branch bard of the above two apple variet

Abstract:Synchronization of Codonoposis pilosula somatic embryogenesis was successfully gained,the callus cultured in MS medium containing 1 mg/L 2,4-D and 3% or 7% sucrose. Endogenous abscisic acid(ABA) and cytokinins(CTK) were determined by ELISA during early st

Abstract:通过宏观调查、系统测定和有关试验，分析了池塘微囊藻及其生态环境，并对该藻水华的预防和抑制进行了探讨。有微囊藻水华的池塘占到宏观调查池塘总数的50％以上。水华出现时间一般是6月至9月，这些池塘里的鲢、鳙鱼生长不良。系统测定中，探讨了池塘微囊藻生态环境，以及微囊藻生物量占浮游植物量的百分比（MPB％），分别与水中三态氮、有效磷等含量的关系。防抑试验启示，通过适当加大生石灰用量，并采用施肥培水等方式，对预防微囊藻水华的形成有效。微囊藻水华盛期，用药物和追肥抑制法加以控制为好。

Abstract:The Prymnesium parvum Carter is a kind of poisonous alga. In the present paper,some comparative experiments have been conducted mainly in the saline-alkali ponds rich in sulphates,and the following results have been concluded,that is,the breeding of other

Abstract:Production of gallnut is not simple to plant, but an ecological works of breeding gallnuts,which is complex. On the based of the investigations of gallnut status,this paper have discussed the technology of the improving gallnut gardens of low yield and se

Abstract:21 species belonging to 11 genera, 11 families of Lichen from the southern slope of Qinling Mountains were report in this paper. This is the first report on Lichen plants from Qinling Mountains.

Abstract:The spores of 2 genera, 7 species of Ophioglossaceae from China were studied by SEM. The species are: Ophioglossum nudicaule, O. pedunculosum, O. petiolatum, O. thermale, O. reticulatum, O. vulgatum and Ophioderma pendula. The morphological characteristic

Abstract:In this paper,a taxonomic study was made on the genus Lonicera Linn. from Gansu based on both literatures and examining all available herbarium materials. As a result,a total of 34 species,4 subspecies and 6 varieties of the genus are recognized in Gansu,