Abstract:The isoenzymes of peroxidase (POD),polyphenol oxidase (PPO),esterase (EST),andsuperoxide dismutase (SOD),amylase (AML) and cytochrome oxidase (COD) in sinenxans high yield cell line Ts19 derived from Taxus chinensis were studied using polyacrylamide

Abstract:通过幼胚培养和秋水仙碱处理，人工合成了具有一对双随体染色体的硬粒小麦——簇毛麦双二倍体（ＡＡＢＢＶＶ）。根尖细胞染色体数目２ｎ＝４２；花粉母细胞减数分裂中期Ⅰ，２ｎ＝２１″的细胞占６９．９４％，染色体构型为１．０′＋２０．４７″＋０．０２。天然和自交结实率分别为４９．０７％和３９．２３％。籽粒蛋白质含量为２０．９８％。抗白粉、条锈、叶锈和赤霉病。

Abstract:The cytological studies on watermelon male sterility material S351 1 indicated that:the abortion occured at the stage when the secondary sporogenous cells were developing into microspore mother cells or into microspore tetrad,In most of the anthers,the

Abstract:The fibrillar inclusions in the vegetative nucleus of the pollen tube of Amaryllis vittata Ait.during the generative cell development were investigated by electron microscopy.The fibrillar inclusions were first recognized in the vegetative nucleus dur

Abstract:kinds of morphological traits of fertile 4D nullisomics of wheat cultivar Xiaoyan No.5.Xiaoyan No.6 and 72180 (named as HN5,HN6 and HN7 respectively) and their respective common 4D nullisomics and disomics were in vestigated.Under the genetic background o

Abstract:本对ＣＯ２正常浓度（３５０μＬ／Ｌ）倍增（７００μＬ／Ｌ）条件下，小麦、水稻和高粱等３种禾本科植物叶肉及维管束鞘细胞中叶绿体的数目，叶绿体的超微结构等进行了比较研究。在光镜和透射电镜下的观测结果表明：高浓度ＣＯ２可促进３种禾本科植物叶绿体的发育，使之数量增多、体积增大；叶绿体中淀粉粒积累增多、体积增大。其中，Ｃ４植物的高粱叶绿体中淀粉粒数量明显增加，而叶绿体光合膜的结构却受到很大破坏；Ｃ３植物的小

Abstract:The distribution of HSC70 in developing flowers of Brassia chinesis has been studied with immunohistochemical procedure.The materials were growing in normal temperature.There were high levels of HSC70 expression in the microspore mother cell,tetrad ce

Abstract:The process of megasporogenesis and development of female gametophyte in Carthamus tinctorius L.has been studied by the parraffin sections method.The results are as follows:(1) Development of ovule is tenuinucellate type,anatropous ovule,unitegminy.(2

Abstract:利用组织透明法和石蜡制片法研究秦岭木姜子各器官内油细胞的结果表明：其根、茎、叶和果实内部有油细胞分布。但它们在大小、数量上存在差异：根的皮层和茎的次生木质部射线中的油细胞体积最小，直径１６￣２５μｍ，且数量较少；果实果肉中的油细胞体积最大，直径约７０μｍ，数量也最多：根的次生韧皮部薄壁组织、茎的皮层和髓以及叶肉组织中的油细胞大小和数量则介于前两者之间，直径约４０μｍ。油细胞多数为单个散在，呈球形或

Abstract:利用联苯胺组织化学染色、石蜡切片法和聚丙烯酰胺凝胶电泳等方法，研究大蒜苗端和花序中形态解剖结构在不同发育阶段的变化，与过氧化物酶及其同工酶变化的相互关系。发现同工酶谱的变化与发育变化密切相关：营养生长时期有４条谱带（ＰⅠ、ＰⅡ、ＰⅢ、ＰⅣ），成花转化期ＰⅢ、ＰⅣ带相继消失，花序发育时期出现了一条新的谱带（ＰⅤ）。酶的高活性部位集中在原形成层细胞中和生长分化区域的细胞壁上。探讨了过氧化物酶与个体发育

Abstract:Comparative anatomy and qualitative analysis of up ground stems of four cultivated varieties obtained in Jiangsu and Zhejiang Provinces are emphatically reported in this paper.The results of comparative anatomy indicate that:On the stem surface of all th

Abstract:The regulation of endogenous ABA and ABA binding proteins on dwarfism expression of indica rice varieties with different semidwarf genes was studied.The levels of endogenous ABA and ABA binding proteins of three dwarf cultivars were much higher than

Abstract:Isoelectric focusing (IEF) electrophoresis and non coherent acetic acid urea polyacrylamid gel electrophoresis (NAU PAGE) were used in this paper to study maize seed storage protein components and their characteristics.The results showed as follows:(1)

Abstract:The relationship between changes of starch,pectin,amylase,PG and softening of Qinmei kiwifruit storaged by MA was studies.Compared with CK,MA storage could inhibit amylase and PG activities,also inhibit the decrease of starch and pectin contents,these res

Abstract:The changes of peroxidase activity and isoperoxidase were studied during rooting induction of the tissue culture shoots of Cucurbita moschata .The results indicated that the adventitious root could be induced when rootless shoots were inoculated from M

Abstract:Calli are induced from the explants of wheat younger seedlings in the MS,N 6,BN 1(3) media supplemented with 2,4 D.The best concentration of 2,4 D is 2.0 mg/L.The growing speed of calli are related with the position of segments and the basic medium.We

Abstract:The morphological development of young inflorescence in foxtail millet ( Setaria italica Beauv.) was systematically observed by means of eletronic scanning microscope.Comparison and discussion of morphological development of young inflorescence bet

Abstract:In this study,photosynthesis,respiration and root vitality of typic big spike wheat varieties (lines) were studied.The results showed that:(1) Root uptake ability of big spike wheat varieties (lines) was stronger than that of general wheat varieties,ro

Abstract:重点研究了Ｃｄ＾２＋胁迫下莼菜叶片的受害症状及叶肉细胞超微结构的变化。当Ｃｄ＾２＋浓度大于２μｇ·ｇ＾－１时，莼菜叶面将在短期内出现不同程度的受害症状。莼菜叶片遭受Ｃｄ＾２＋毒害初期，叶肉细胞质体中的少数基粒会发生膨胀或解体，线粒体的脊出现瓦解，部分核仁裂解成数块大小不等的颗粒。随着叶肉细胞遭受毒害程度的加深，质体中较多的类囊体便出现解体，多种膜性结构如：质体、线粒体的外包膜以及核膜、液泡膜等均遭

Abstract:A new method for large scale preparation of trichokirin (TCK),a single chain ribosome inactivating protein from the seed of Trichosanthes kirilowii was established.A comparative study on properties of TCK with trichosanthin (TCS) had been carried o

Abstract:Random amplified polymorphic DNA (RAPD) analysis is a new developing technique of molecular marker.The standard RAPD procedure uses a sigle 10 base long random oligonucleotide as a primer to amplify part fragements of the genome by PCR.We modified the pr

Abstract:Wheat storage proteins were extracted with different solutions.The protein solving in salt solution was resolved in native polyacrylamide gel electrophoresis of Laemmli system,and other proteins were resolved in acid polyacrylamide gel electrophoresis (A

Abstract:The present paper deals with the karyotype analysis of three species of the Abies (Pinaceae) from North America including A.amabilis Doug.ex Forbes., A.grandis Lindl.and A.lasiocarpa (Hook.) Nutt.Their morphology of somatic chromosomes in r

Abstract:The maximal tree method of fuzzy praph theory can produce tree praph from fuzzy similar coefficient matrix in the numerical classification.The determination of cutting levels in fuzzy praph clustering up to date is more or less a subjective or trial erro

Abstract:According to the features of vegetation degeneration and surviving vegetation in Yuanmou dry hot valley,the types of primary vegetation are analysized in the paper,and thinking that they are the polyclimax patterns,the experimental results show as long a

Abstract:This paper deals with the ferns flora of China.Based on statistics and analysis,the results show that:(1) The floristic elements are relatively rich,which are about 3000 species belonging to 63 families and 228 genera.Some families and genera are mainly d

Abstract:This paper deals with the floristic statistics and analysis of the Liuba region in South Shaanxi Province.Based on the statistics and analysis,the results show that 1480 seed plant species including subspecies and varieties were found in this region.These