Abstract:Increments of respiration rate, ethylene production rate were detected during storage in bitter gourd after treated by CEPA,compared with CK. CEPA treatment made the climacteric,the color turning period arrived earlier 2 days and the storage period shorte

Abstract:Studying on the dynamics of plant height, AGR, RGR in whole growth period and community structure,leaf-stem ratio in different Ievels. It is concluded that the dynamic of plant height was suitable for logistic curve;the dynamic of AGR and RGR is a single

Abstract:The observation on flower,fruit and seed of Atriplex aucheri Moq. have been made. The results were as follows :Atriplex aucheri Moq. is monoecious plant with one kind staminate flower and two kind of pistillate flowers. It has three type fruits that are d

Abstract:We collected the insects on the flowers of Ferula sinkiangensis G. M. Shen (Umbelliferae) in Xi-jiang,west China. An observation was conducted about their visiting frequency,staying time,and behavior on the flowers. Forty-five species,23 families,5 orders

Abstract:The micro-morphological characteristics of leaf epidermis of subgenus Soja were studied by SEM. The results show that the leaf epidermis micro-morphological characteristics have taxonomic signifi-cance at species level.

Abstract:Wild-Mlo gene functions as a negative regulator of resistance to barley powdery mildew. The mlo gene, recessive mutant alleles of the Mlo locus, confers broad-spectrum disease resistance to the powdery mildew fungus. This review briefly summarized recentl

Abstract:Among abiotic environmental stresses, water deficit affects plant growth and productivity most seriously. However,under the naturai selective pressure,plants develop a wide array of defense strategies a-gainst water stress,in which all sorts of proteins p

Abstract:The relationships among allelopathy and water potential,photosynthesis,respiration,fertilizers u-tilization,cell division and metabolisms were reviewed in this paper,and the factors affecting allelopathy were discussed. It showed that allelopathy has a gr

Abstract:Nostoc is distributed worldwide and most species are known for their desiccation tolerance. There is a considerable accumulation of literature on this aspect. In the present paper,we reviewed the mechanism of their desiccation tolerance on the structural,

Abstract:超微结构观察表明，内质网在水稻(Oryza sativa L.)淀粉胚乳发育中十分活跃，参与许多功能过程：①部分粗面内质网槽库膨大，积累淀粉，发育成淀粉质体；②粗面内质网产生蛋白体I；③内质网参与营养物质在质外体与共质体间的运输；④内质网片段化，包围细胞质，形成环状内质网或内质网兜(ER pockets)，参与细胞基质的降解。

Abstract:The structure of root nodules in Trifolium repens Linn. and Medicago sativa Linn. were studied by methods of paraffin-sectioning and ultra-thin-sectioning. the nodules were composed of four parts,ecto-entad they were:the protect layers,cortex,sheath cell

Abstract:In the present paper,the characters on the abaxial foliar epidermis of 29 different varieties of to-bacco were observed under light and scanning electron microscopes. The results showed that abaxial foliar epidermis are different among tobacco varieties.

Abstract:The young branches anatomical diversity of 6 species (Reaumuria soogorica ,Tamarix taklamaka-nensis, T. arceuthoides, T. ramosissima, T. hispida, Myricaria laxiflora ) from three genera of Tamaricaceae from China is described. Results show that the presen

Abstract:以巨峰葡萄(Vitis vinifera L.×V.Labrusca L.cv.Kyoho)为材料,用摘叶、去穗法判定花芽的生理分化期,并用GMA半薄切片法观察花芽分化进程。结果表明:从新梢顶端到第9个展开叶之间的芽处于生理分化期,花芽生理分化期分为成花诱导期和花芽孕育期。葡萄的花序分化阶段可分为未分化期、花序原基分化期和花序第二穗轴分化期3个时期。第1年只进行花序分化,次年进行花器官分化。原分生组织衍生的组织中淀粉粒分布较多,蛋白质则在分裂旺盛的原基组织中含量高。

Abstract:The effect of nitrogen nutrition on coordinete growth of root and shoot of different wheat gene-types were studied. The result showed that at different nitrogen nutrition Ievels,the shoot dry weight and leaf gas exchange parameters were increased with nit

Abstract:以小麦为实验材料，研究了盐胁迫对根质膜H^ —ATPase、Ca^2 —ATPase活性及H^ —ATPase蛋白表达的影响。结果显示：50、100、150mmol/L的NaCl处理72h后，小麦根质膜H^ —ATPase、Ca^2 —ATPase活性均降低。100mmol／L NaCl对质膜ATPase活性的抑制程度随处理时间的延长而增强，在处理24h后，H^ —ATPase和Ca^2 —ATPase的活性分别降为对照的72％和75％，而处理72h后，酶活性分别减小到对照的50％和48％。50、100、150mmol／L的NaCl直接作用于提取的质膜微囊，H^ —ATPase的活性分别降低约5％、8％和16％。Western blotting分析结果显示100mmol／L NaCl处理72h后，质膜H^ —ATPase的含量与对照比有所减少。本研究表明：盐胁迫抑制小麦根质膜H^ —ATPase、Ca^2 —ATPase的活性，酶含量的减少可能是盐胁迫导致质膜H^ —ATPase活性降低的原因。

Abstract:Superoxide dismutase (SOD) ,Catalase (CAT) activities and malondialdehyde (MDA) ,chloro-phyll,soluble protein contents were investigated during senescence of hybrid rice and three lines. The re-sults indicated that leaf senescence was associated with the

Abstract:The wheat (T. aestivum L. ) germplasm resources with drought resistance were grown in the field under rainfed and irrigated conditions respectively. According to the correspondence between develop-mental stage of yield components and phenological phase in

Abstract:In this article the change of the free amino acid content of the different variety wheat organs above the ground and the relationship with the grain protein along with the modulation of nitrogen nutri-tion were studied. The results showed that the free am

Abstract:试验以枸杞(Lycium barbarum L.)成熟胚诱导的胚性愈伤组织为材料研究了：(1)^60Co—γ射线诱变处理对愈伤组织的影响；(2)耐羟脯氨酸(HYP)愈伤组织变异系的筛选；(3)耐HYP愈伤组织变异系的耐盐性及稳定性分析；(4)耐HYP愈伤组织变异系生理生化特性；(5)变异系的分化和再生苗的生理生化特性。初究结果表明：由胚性愈伤组织经30Gy的^60Co—γ辐射处理，在含16mmol／L HYP选择培养基和无HYP培养基上交替培养4代，分离出耐HYP的愈伤组织变异体；该变异体游离脯氨酸含量比对照高3．3倍，其再生植株叶片游离脯氨酸比对照高13．5倍。

Abstract:The hypocotyls of sterile seedlings of Peganum harmala L. were cut and placed on different media containing different phytohormones to induce calli. It was found that the calli could be induced efficiently on MS basai medium supplemented with 2. 0 mg/L 2,

Abstract:Some physiological and biochemical changes in the process of dedifferentiation of F. ussuriensis bulb cuttings cultured on the media containing thidiazuron (TDZ) or kinetin (Kin) had been studied. Re-sults showed that phenylalanine ammonia lyase,amylase,i

Abstract:Water is the leading eco-factor which confines the plant's healthy growing at large extent in arid and semi-arid area such as the Loess Plateau area of China. Concerning the vegetation productivity of water especially soil water in semi-arid area,in this

Abstract:对山东现有的莴苣亚族的植物标本进行了研究，确定山东莴苣亚族植物有24种，分属于12个属，即：苦苣菜属(Sonchus L.)、乳苣属(mulgedium Cass.)、山柳菊属(Hieracium L.)、黄鹌菜属(Youngia Cass.)、福王草属(Prenanthes L.)、翅果菊属(Pterocypsela Shih)、莴苣属(Lactuca L.)、苦荬菜属(Ixeris Cass.)、小苦荬属(Ixeridium (A.Gray) Tzvel.)、沙苦荬属(Chorisis DC.)、黄瓜菜属(Paraixeris Nakai)和蒲公英属(Taraxacum L.)。发现1个新记录种：华蒲公英(Taraxacum borealisinense Kitam.)。

Abstract:There are 7 species and 11 subspecies in the genus Hippophae of which 7 species and 7 sub-species,including recently new discovered 2 species and 2 subspecies,are distributed in China. That is to say,China is the richest not only in germplasm resources,bu

Abstract:The anthers of Robinia hispida were cultured and the results showed that the highest induction rate of callus was 41. 5% when they were cultured on MS medium supplemented with 2,4-D 0. 1 mg/L and BA 3. 0 mg/L for 20 days. Green buds formed from the callus

Abstract:The leaf ,petiole, stem-segment and stem-segment with single bud of the chinese wild grapes,Zuoshan-1, Zuoshan-2 (V. amurensis),Yanshan-1 (V. yeshanensis) and Pingli-7 (V. romanetii) were in vitro cultured. The optimal medium for the leaf of Zuoshan-1 was

Abstract:The adventitious buds of Pinus ponderosa were used to induce adventitious roots on GD,SH,1/2 SH media supplemented with different concentration of NAA and IAA. The results showed that the basie medium played a determinative role in initiating the adventit

Abstract:以发根农杆菌转化苦豆子的子叶和下胚轴外植体，结果表明，辅助以超声波处理有助于转化率的提高，当超声波(功率120W，震荡频率50kHz)处理25min时，转化率达到最高峰(子叶为83．7％，下胚轴为39．1％)，分别高于对照(14．4％和9．8％)69．3％和29．3％。在此条件下，进一步添加AS l00μmol/L，可使转化率再进一步提高9．9％和7．6％。

Abstract:An improved DNA extraction protocol with CTAB was developed for tissues from young leaves with vigorous period. DNA was extracted successfully from the wild grapes native to China and European grape cultivars and was suitable for randomly amplified polymo