Abstract:Genetical analysis of gene effects connected to utilizing potential soil phosphorus of common wheat are carried out through pot screening method by using a set of Chinese Spring telodisomic lines in the experiment,the results show:(1) Genes carried on dif

Abstract:Seeds of Eleutherococcus senticosus (Rupr.et Maxim) Maxim are flat kidneyshaped and their seed coats are only composed of one layer of cells.Embryos with abundant proteins in their cells,are just at the heart shaped stage and are capped by sacs form

Abstract:Seventy nine improved wheat cultivars (lines) including some related parents were corssed with rye to detect the difference of crossability among wheat genotypes and the developing tendency of crossability during the cultivar renewing period in Shandong

Abstract:With crossing between octoploid Tritielytrigia types and Triticum aestivum ,the drought resistant wheat variety Xiaoyan 597 was bred by continuous selection.The results tested show that Xiaoyan 597 is resistant to drought.Stabilty of the cell membr

Abstract:采用电脉冲法，转化大分子复合物ＩｇＧ－荧光素进入小麦部分酶解（１２０ｍｉｎ）愈伤组织的细胞即半原生质体中，在荧光显微镜下观察发现一些细胞有荧光发生，由此确定的较适宜脉冲转化条件如电场强度为２２５０－３０５０Ｖ／ｃｍ应用于转化外源基因ｐＺＦＸ２到小麦半原生质体，随后将其按愈伤组织的培养过程进行培养和抗ｋａｎａｍｙｃｉｎ筛选后获得成活愈伤组织团块，存活率为１１．３％￣１８．９％，这都说明已成功地将这两

Abstract:The effects of decapitation,NAA supply to the apical parts of CME to the stem base on root iron reducing activity and changes in concentration of IAA and Z/ZR in different organs were investigated in nutrient solution.The results showed that decapitation,

Abstract:Analysing seed protein,esterase isozyme (EST),superoxide dismutase (SOD),peroxidase isozyme (POD) of variant wheat derived from introducing exogenous pea DNA into common wheat via (SDS) PAGE showed that the seed protein decreased 4 components,EST and POD

Abstract:In this paper,it was determined that percentage of root bark,total area of root trachea,proportion of palisade tissue/sponge tissue,leaf stoma density,reducing sugar content of stem,reducing sugar content of leaf,free amino acid content of leaf,protein co

Abstract:The changes of protein bodies in cotton cotyledons during germination were studied in this paper.Two types of protein bodies were observed in ungerminated seed.One type only consists of proteinaceous matrix,no inclusions and the other type consists of glo

Abstract:用便携式ＡＤＣ光合气体分析系统和便携式ＣＦ－１０００荧光仪对青海和上海的同一植物和不同植物叶片光合作用的光抑制进行了测定。结果表明，两地在晴天强光下，中午植物叶片光系统Ⅱ（ＰＳⅡ）的光化学效率（Ｆｖ／Ｆｍ）和表观光合量子效率（ＡＱＹ）的日变化比早晨低；上海测定ＰＳⅡ的Ｆｖ／Ｆｍ和ＡＱＹ的日变化比青海的下降幅度大。ＡＱＹ的日变化曲线比ＰＳⅡ的Ｆｖ／Ｆｍ低，ＡＱＹ降低的幅度比ＰＳⅡ的Ｆｖ／Ｆｍ大。两地植物均有不同程度的光合作用光抑制，且上海比青海的大

Abstract:杏茎段在附加１．０ｍｇ／Ｌ ２，４－Ｄ和０．１ｍｇ／Ｌ ＢＡ的改良ＭＳ培养基中诱导出愈伤组织，放入１０％ＤＭＳＯ＋０．５ｍｏｌ／Ｌ山梨醇或葡萄糖的冰冻保护剂中，以１Ｃ／ｍｉｎ的降温速度降至－４０℃，停留２ｈ后投入液氮保存，在４０℃水浴中化冻。继代培养８次生长１５－２０ｄ的愈伤组织保存后的相对存活率最高，不同品种基因型保存效果差异很大，保存后的愈伤组织生长量比对照减少，但经过２次继代培养后不再表现差

Abstract:Losing water rate was slow,soluble sugar,proline content and superoxide dismutase (SOD) activity were increased in seedlings of maize under temporary wilting,while losing water rate was rapid,soluble sugar,proline content and SOD activity were decreased i

Abstract:The present paper firstly reports the development of microsporangium,male gametophyte,megasporogenesis,female gametophyte and embryogeny in Swertia erythrosticta Maxim.The main results are as follows:The anther is tetrasporangiate and its wall develop

Abstract:对用正筛选法选出的耐１％、２％和２．５％ＮａＣｌ的小麦３个耐盐细胞系进行了详细的电镜观察。结果表明，随着耐盐程度的提高，小麦愈伤组织细胞的质体膨胀状态，数量有减少的趋势。耐低盐浓度（１％ＮａＣｌ）的细胞系线粒体结构与对照差别不大，而耐高浓度盐分的细胞系对对照有明显差异。耐盐系细胞的线粒体，粗糙型内质网及核糖体数量比对照细胞增加，高尔基体和内质网膨胀，细胞核核质凝聚，核膜膨胀，液泡发达，细胞壁的生长

Abstract:The development and distribution of oil cells in the stem and leaf of Litsea pungens were studied with the help of method of semithin section.The results are as follows:Oil cells initiate from the ground meristem of the first leaf primordium and of th

Abstract:The protein body of ungerminated and germinated tomato seeds was studied in this paper.Protein body consists of a limited membrance,proteinaceous matrix and different types of inclusions:globoid crystals,protein crystalloids and druse crystals.According t

Abstract:Cellularization of endosperm at early development stage in Coix lacryma jobi L.was investigated using transmission electron microscopy.At the free nuclear endosperm stage,the nuclei are located in a thin layer of cytoplasm at the periphery of the la

Abstract:Some resin containing cells are present in parenchym of cortex in shoot apex and xylem parenchym of stem in Pinus tabulaeformis .With the aid of microscope it is found that some globular droplets are stained into blue with Nile blue in resin containi

Abstract:Observations of the distribution and concentration of sinomonine in the stems of Sinomenium acutum and Sinomenium acutum var. cinereum revealed that sinomonine was located in the cortex and rays which were near vascular cambium particularly.The

Abstract:对杉木雄性不育株与可育株在小孢子发生和发育过程中的小孢子囊内各种细胞的胼胝质和孢粉素的变化进行研究。结果表明：杉木雄性不育株的小孢子囊发育迟缓，其败育可分为：无小孢子囊型，减数分裂Ｉ前中层细胞增生型和减数分裂Ｉ后中层细胞增生型等３种；其细胞壁厚薄不均，在其小孢子囊发育过程中，细胞内淀粉粒缺乏或异常；在早期，其胼胝质壁较可育株的薄，发出的荧光较弱；发育后期，则具有胼胝质壁，直至细胞解体。不育株小孢子

Abstract:In this paper,the investigations of the leaf anatomy in Tamaricaceae (about 3 genera,19 species) were made in Myricaria the structures of leaf are dorsiventral and are of mesomorphic.But it is of xeromorphic characteristic,and palisade tissue arrange

Abstract:The early events in cotyledon cells cultured in vitro of Acacia mangium were studied under light and electron microscope.The results showed that parenchyma cells of cotyledons before culturing contained a lot of storage materials.During th

Abstract:The fruit of Pyrus betschneideri Rehd.cv.Wo Li is spurious fruit which develops from cup shaped receptacle and ovary.It consists of epidermis,pulp and core of fruit.The epidermis and the pulp which have vascular bundles and stone cells develop from

Abstract:A technique of biosynthesizing high content alkaloid in tissue culture of Fritiillaria pallidiflorae Schrenk was established by the method that had been combined tissue culture with direct fluorescent observation of cell sap printing,and the

Abstract:The karyotypes of three endemic species for Ranunculaceae in alpine periglacial area of Qinghai Xizang Plateau are analysed and represented in this paper.Their karyotype formulae (K) (by Levan et al.,1964) and chromosome component of relative length (C.R

Abstract:This article built a model of three level feed toward back propagation neural network to simulate density change law in Alder and Cypress mixed forest,and compared with traditional model.The results of simulating showed that artificial neural network m

Abstract:Based on the literatures,four species of the genus Timmia Hedw.had been recorded in China.In this paper five species including T.norvegica Zett., T.comata Lindb.et Arnell., T.austriaca Hedw., T.megapolitana Hedw.and T.bavarica Hessl.w

Abstract:以两种不同成熟度的杏果实为材料，研究了杏果实色泽转变以及ＧＡ３处理延缓杏查实成熟老的生理效应。结果表明，杏果实成熟过程具有叶绿素降解，类胡萝卜素和花色素苷积累的特征；ＧＡ３处理延缓杏果实采用色泽的转变的生理效应，与减缓叶绿素降解，促进ＰＯＤ活性和抑制ＰＰＯ活性密切相关。

Abstract:This paper regards Scutellaria alaschanica Tschern.is the same species as S.rehderiana Diels.and S.rehderiana Diels is their legal scietific name.