Abstract:The floral nectaries of Brassica campestris Linn. consist of two lateral nectaries and two median ones. The basic structure of them exhibited similar features. During the different stages of nectary development, the endoplasmic reticulum, Golgi bodies, pl

Abstract:Isoelectric focusing(IEF), sodium dodecyl sulfate-polyaerylacvy laminde gel electrophoresis(SDS-PAGE) and two-dimensional electrophoresis (LEF* SDS-PAGE) were emploied to analyse the glutelin of grain amaranth (A. cruentus) for its patterns of subunits co

Abstract:The present work deals with the detailed ultrastructure of the intercellular cytomictic channel(ICC) between microsporocytes of Prophase I in plant Lilium daviddi and Secale cereale by the transmission electron microscopy. It was found for the first time

Abstract:Four genotypes of wheat (Keyi 26 .442M-1,Shannong 215953 and Chinese Spring) with different drought resistance were studied. Three experiments were included in the study: (1) Changes of formation, physic- biochemistry and information substance in roots an

Abstract:Barley seeds were treated with five different doses of gamma rays and 5 mmol/L caffeine respectively and the two together in the present study. The significant linear relationship between chromosome damage and plant damage of M1 and radiation dose were fo

Abstract:The doubel technology of chromosome of Xiaoyan wheat pollen seedling adopt four nape synthetic measures. It basically make the treated pollen seedling to obtain the pure diploid plant: (1)Use 0. 05% colchicine and 2% DMSO solution to soak the root one tim

Abstract:Calli were induced and whole plants were regenerated from in vitro culture of leaf and stem segments of Actinidia arguta (Sieb. et Zucc. )Planch. ex Miq.. Leaf explants were difficult to induce callus but the calli were easy to differentiate buds;on the c

Abstract:以小麦返白系和对照矮变１号以及返白系与各不同生态类型的冬性、半冬性、春性小麦的杂交、回交Ｆ１、Ｆ２代为材料，研究这些不同基因型品种在返白期间过氧化物酶同工酶（ＩＰＯ）基因表达模式的动态变化特点。结果表明，在返白期间以返白系为母本的各杂交、回交品种的白化苗中，ＩＰＯ的个别酶分子表现了可逆的基因阻遏和去阻遏的表达现象。这种表达特点在正、反杂交后Ｆ１代中表现一致，从遗传模式上分别属于质－核互作型的分子遗

Abstract:以宝交早生一年生草莓苗为材料，研究和分析了长期冷藏（０℃）过程中各种内源激素的含量水平、变化及相关关系。冷藏苗和对照苗的差异典型地表现在根部的激素含量上。冷藏苗的ＡＢＡ含量始终比对照苗低，Ｚｅａｔｉｎ、Ｚｅａｔｉｎ ｒｉｂｏｓｉｄｅ、ＧＡ３和ＩＡＡ的含量却始终比对照高。其内源激素的变化既不同于有休眠特性的洋葱，也不同于无休眠特性的甘兰。各种内源激素之间的相关分析表明激素之间存在着显著的协同关系。

Abstract:The investigation of microsporogenesis and the formation of male gametophyte in Plantago lessingii was made in this article, the main results showed that:the anther is tetrasporangiate, the anther wall comprises the epidermis, fibrous endothecium, and eph

Abstract:The production of the main wheat variety in Guan Zhong area-Xiaoyan No. 6 was analysed according to the information of the yield trials and the large-area planting during 1980-1995. The results show, the reasons of stable yield of Xiaoyan No. 6 are risist

Abstract:In this paper,using the wheat of albiscent line and its parent Aibian No. 1 as test material. At three special period of wheat of albiscent line,beginning of albinism, thorough white leaves begainning of regreening,the soluble protein were studied by Nati

Abstract:试验用场强０．１Ｔ、０．１４Ｔ、０．１８Ｔ的磁场或磁水处理玉米。发现二、三叶期幼苗中，超氧化物歧化酶（ＳＯＤ）和过氧化氢酶（ＣＡＴ）活性增高，谷胱甘肽（ＧＳＨ）含量增加，丙二醛（ＭＤＡ）含量降低，提示磁处理在一定程度上消弱了玉米幼苗的脂质过氧化作用。

Abstract:The total numbers of 387 root nodules which we have collected dispersed over 44 genera, 109 species of legumes according to our investigation of rhizobia resources of leguminous plants in Shaanxi province and some areas of Gansu province and Ningxia auton

Abstract:The analysis of nucleotide sequence variation has proven extremely useful in the reconstruction of plant phylogenetic relationships. In this paper 9 a general review of the methods of molecular systematic of plant at DNA level has been made. The progresse