Abstract:应用随机扩增多态ＤＮＡ（ＲａｎｄｏｍａｍｐｌｉｆｉｅｄｐｏｌｙｍｏｒｐｈｉｃＤＮＡｓ，ＲＡＰＤ）技术，对普通小麦细胞质雄性不育系（Ａ）及其保持系（Ｂ）线粒体基因组（ｍｉｔｏｃｈｏｎｄｒｉａｌｇｅｎｏｍｅ）的指纹图谱进行了分析。共使用引物４１个，其中２０个引物得到了扩增产物，部分引物扩增结果表现多态性。说明线粒体ＤＮＡ（ｍｉｔｏｃｈｏｎｄｒｉａｌＤＮＡ，ｍｔＤＮＡ）序列在不育系和保持系之间存在差异，进一步明确了小麦细胞质雄性不育（ｃｙｔｏｐｌａｓｍｉｃｍａｌｅｓｔｅｒｉｌｅ，ＣＭＳ）与ｍｔＤＮＡ的关系。

Abstract:以Ｋ、Ｖ型１Ｂ／１Ｒ不育系分别和四个非１Ｂ／１Ｒ恢复系杂交，观察了异质杂种小麦的花粉母细胞减数分裂。以Ｔ型细胞质和普通小麦胞质作比较，研究了Ｋ、Ｖ型异源细胞质对１Ｂ·１Ｂ／１Ｒ杂合核型染色体配对的影响。实验结果表明，Ｋ、Ｖ胞质背景下，育性恢复度与１Ｂ·１Ｂ／１Ｒ杂合核型染色体配对行为不直接相关。减数分裂中期Ⅰ、Ｋ、Ｖ、Ｔ型异源细胞质对杂合核型染色体配对的影响随父本遗传背景不同而异。后期Ⅰ，三类异质小麦杂种Ｆ１代均出现了不正常分离，后期Ⅰ和后期Ⅱ出现了落后染色体，四分体时期出现了微核。三类异源细胞质对落后染色体率和微核率的影响因不同遗传背景而异。

Abstract:The species diversity indices and the species abundance distribution of Quercus liaotungensis forest in Qinling mountain and the loess plateau were studied.The results are as follows:(1) The species diversity of Qinling is higher than that of the loes

Abstract:用研磨和浸提法处理玉米淀粉饼渣，蒸馏色素浸提混合液，回收提取液，用不同比例的混合试剂提取以选择最佳方法。结果发现以石油醚∶乙醇＝３∶２和丙酮∶乙醇＝３∶２提取液效果最佳，色素产率高，色质好，提取溶剂回收率升高。

Abstract:Actions of regulation of gibberellin,cytokinin and ethylene to growth and development of fruits are discussed in a relatively systematic way in this paper,and their use method,stage and concentration etc.on fruit trees are also illustrated.

Abstract:Cytological characteristic were studied on microsporogenesis and male gametophyte development of ( T.aestivum/E.elongata 10x) F 1 by using squash method.The main results are as follows:1.There are abnomal phenomena in meiosis of ( T.aestivum/E.elonga

Abstract:different wheat varieties were used,the length of coleoptile was measured,the results indicated that the length of coleoptile in drought resistant genotypes was longer than that of disdrought resistant ones,and the difference was very significant.The rel

Abstract:Using immuno cytochemical techniques,actin were localized in nuclear matrix and chromosome scaffold of Hordeum vulgare .Besides,the distribution of actin in nuclei and chromosome were also studied in situ by immuno electronmicroscopy.The function of

Abstract:By the correlative heritability path analysis of characteristic in the leaf of 10 year old paulownia clones in relation to volume,diameter and height,the results show that the signs of rapid growing of volume and diameter are large leaf area,low leaf

Abstract:芫荽的花蜜腺位于子房上部盘状结构上，属于下位子房上部的花盘蜜腺。蜜腺由分泌表皮和产蜜组织构成。分泌表皮具厚的呈波纹状皱折的角质层，层皮上分布有下陷的变态气孔。产蜜组织细胞４－５层，其下有３－４层大型薄壁细胞与来自子房壁的维管束相毗邻。芫荽花蜜腺发育较晚，在子房发育后期由花盘表面的１－２层细胞恢复分裂能力形成蜜腺组织。产蜜组织细胞在发育过程中，液泡、淀粉粒都呈现一定的消第长规律。根据其结构及泌蜜前后

Abstract:何首乌为直生胚珠，双珠被。胚发育属于柳叶菜型。心形胚柄最为发达，鱼雷形胚期胚柄奶化。早期胚胎发育营养的主要来源可能是合了中积累的淀粉和胚柄吸收来的营养。成熟胚中积累了大量的蛋白质和淀粉粒。胚乳发育属核型。从球形胚期起，胚乳细胞化过程由珠孔端向合点端逐渐推进。初始垂周壁源于姊妹核间的细胞反或非姊妹核间由次生成膜生的细胞板。初始平周壁源于有丝分裂所产生的细胞板。心形胚期，除合点端保持游离核胚乳吸器外，

Abstract:The development process of the floral nectaries of Nymphoides peltatum (Gmel.) O.Kuntz is divided into four periods:the nectary initiation period,the nectary growing period,the nectary secreting period and the secrete stopping period.Five separated n

Abstract:用透射电镜研究了中国沙棘（Ｈｉｐｐｏｐｈａｅ ｒｈａｍｎｏｙｄｅｓ Ｌ．）根瘤的超微结构。它的侵梁细胞位于皮层中部，非侵染细胞与之间排列，富含多酚和淀粉粒。在根瘤的发育过程中，具有以下特征：（１）早期侵染细胞中具有核仁联合体；（２）由内生菌丝趋核生长而形成的核膜内陷处，有许多核孔出现；（３）在中期侵染细胞的内生菌丝和泡囊的荚膜附近，有成束的微管存在；（４）在４、５月瘤样的维管束细胞、非侵染细胞及早

Abstract:报道了国产苔草属，两亚属，７组中的１６种植物在电子显微镜下果实表皮的特征和研究结果。根据种内个体间、组内种间以及亚属间的比较，作者认为在苔草属中，果实表皮显微特征在种内个体间比较稳定，变异很上；同组内种间表现出的较大相似性和不同组间存在的一定差异性。说明在组和组下等级的分类学处理以及在系统位置和亲缘关系的探讨上，果实显微特征具有重要的分类学价值。同时由于是微特征在各间甚至属间相互交叉和渗透，在划分

Abstract:This paper is dealed with the anatomical characteristics of the root,the node and the leaf of Kingdonia uniflora Balf.et W.W.Smith.The special aspects in these organs are that the root has more than 2 root hair zones (same to Circaeaster agrestis

Abstract:The fluorine pollution in air was comparatively monitored with the methods of the hanging bags made of Usnea longissima and LTP both inside and outside Fluorization Salt Factory.The results obtained from 19 sites showed that the areas inside the fact

Abstract:The Plasma Membranes (PM) of maize young leaves growth zone were isolated by the method of two phase partition.The results showed that the best composition of two phase system which isolated PM was:Dextran T500 6.2%,PEG 4000 6.2%,K phosphate buffer pH 7.

Abstract:依据田间试验资料，建立了３个猕猴桃品种的净光合速率和蒸腾速率与环境因素（空气温度、光量子通量密度、空气相对湿度）的经验公式；比较了３个品种对环境适应能力上的差异，在育种工作中，为选择具有理想生理特性的品种和确定品种适生区等提供生理学依据。研究表明美味猕猴桃的生理活动对空气湿度变化反应强烈，当光量子能量密度为３００－３５００μｍｏｌ·ｍ＾－２·ｓ＾－１，气温为３２－３５℃时最适合其生理活动。相对于秦

Abstract:水分胁迫下，２０ｍｇ／Ｌ２，４－Ｄ和４００ｍｇ／Ｌ乙烯利（ＣＥＰＡ）分别不同程度地降低和提高玉米幼叶生长部位的相对含水量（ＲＷＣ）、水势（ψｗ）和渗透调节能力（ＯＡ）。胁迫后期，玉米幼叶中脯氨酸含量（Ｐｒｏ）为：ＣＥＰＡ〉对照（ＣＫｓ）〉２，４－Ｄ。随胁迫宾进行，２，４－Ｄ处理幼叶的膜相对透性（ＲＰ）始终处于较高水平且增长幅度较大，叶片延伸生长速率（ＬＥＲ）对ＲＰ的变化较为敏感；而ＣＥＰＡ处理则与

Abstract:在严格控制光照和空气相对湿度的人工气候室内，模拟不同昼夜温差（２５℃／１０℃，昼／夜和２５℃／２５℃，昼夜），对两个原在不同环境条件下栽培的青海高原３３８和上海沪麦５号小麦品种的光合特性进行了进行了比较研究。结果表明，在有１５℃昼夜温差处理条件下生长的小麦，其叶面积较大，叶片寿命较长，呼吸作用较低。不同的昼夜温差条件下小麦的光合作用响应曲线没有明显的差异；但在夜温为１０℃下生长小麦，其光合作用的最

Abstract:The Se absorption of apple and the method of producing the rich Se apple were studied through 3 treatments (faliar application,trunk instilation and soil addition) and Se solution of different concentration.It showed that Se is not an essential micro el

Abstract:油蒿群落初级生产力年度变化范围在４６５．４５－９１２．１５ｋｇ／ｈｍ＾２，变幅主１９６％。据相关分析，制约本区油蒿群落初级生产力主要因素是土壤水分和热量，尤其是４月份、５月份土壤水分、６月份温度及蒸发量等，也可根据上述单因子群落初级生产力。群落初级生产力积累动态呈单峰值曲线，大体可分为“缓增型”和“急增型”两种。缓增型模式符合Ｌｏｇｉｓｔｉｃ曲线方程，急增型模式符合反函数曲线方程，该群落衰减动态呈

Abstract:试验以居群为单位的新疆甘草属７个种进行种间人工杂交。通过对种间杂交结实量（ＲＳ）和亲本种平均结实量（ＲＳｍ和ＲＳｆ）的分析比较，测出相应的杂交结实指数（ＩＳ）、初步了解种间杂交亲和性的大小，为甘草属植物系统与演化的研究提供参考依据。

Abstract:Esterase isozyme and solube proteins of pollen grains from Zea mays L. have been studied with ultrathin polyacrylamide gel electrophoresis.The results show:it could be seen among different developmental stages of pollen grains that obvious difference