Abstract:本文分析了氮离子注入棉花花粉对其形态，生活力和育性的影响。结果表明：氮离子束对花粉壁有明显的刻蚀作用，并能促进花粉粒间的融合。离子注入导致花粉管生长受抑制；过氧化物酶同工酶活性增强，酶带数目增加；萌发率、花粉管穿过花柱到达胚珠率、结籽率和成铃率均较对照显著降低。离子注入剂量与花粉损伤程度的大小呈正相关。经２０×１０￣（１５）Ｎ￣＋／ｃｍ￣２剂量处理的花粉，其萌发率降为对照的５２．３％；花粉管长度仅为对照的１７．１％；而且未获得成熟的种子。文中建议棉花花粉离子束诱变的剂量范围以５×１０￣（１５）Ｎ￣＋／ｃｍ￣２－１０×１０￣（１５）Ｎ￣＋／ｃｍ￣２为宜，并且讨论了离子注入技术在植物外源基因导入和细胞融合等方面的应用。

Abstract:Using antibody against native wheat calmodulin,a competitive indirect enzvme-linkedimmunosorbent assay(ELISA)was developed for the quantitation of calmodulin in plants.The linear range of calibration ctirve was between 2 and 1400 ng calmodulin.The meanCV%

Abstract:蕃茄（ＬｙｃｏｐｅｒｓｉｃｏｍｅｓｃｕｌｅｎｔｕｍＭｉｌｌ）在各生长发育期酯酶同工酶谱带无明显变化，但经磁水处理后各生长发育阶段功能叶中酯酶同工酶酶谱及磷素含量与对照组相比存在显著差异，且具有酶谱负极端带数增加，正极端带数减少的趋势。总磷含量测定结果表明处理组均比对照组显著提高。这些变化在磁水处理著前后代中不存在，故认为磁水只是致使非编码顺序局部复制引起ＤＮＡ分子高级结构改变或是通过活化调节基因来调控酯酶同工酶，活化磷代谢，达到促进生长和增产的效果，而并非导致可遗传变异的结果。

Abstract:以氮肥和底墒为决策变量，采用最优二次Ｄ饱和设计，用Ｌｏｇｉｓｔｉｃ方程拟合各水肥处理的籽粒充实过程，并推导出一系列次级参数，分别建立了小麦籽粒灌浆强度与持续时间参数的数学模型。结果表明：生长在氮肥或底墒逆境条件下的小麦受精子房的生长潜势（Ｃｏ）较大，并随逆境条件的改善而降低；千粒重（Ｙｏ）与灌浆快增期（Ｔ）的长短、最大灌浆速率（Ｒ＿（ｍａｘ））和平均灌浆速率（Ｒ）无明显相关性，却与起始生长势、灌浆系数（Ｔ·Ｒ＿（ｍａｘ））高度正相关，并且千粒重与灌浆系数的相关性明显大于千粒重与起始生长势的相关性；氮肥和底墒对籽粒灌浆特性具有显著的调节作用。同时还阐述了调节这些参数的水肥栽培途径。

Abstract:The apical promeristem of main root of Panax quinque folium L.consists of three groups ofinitials.Primary xylem is triarch.Secondary vascular tissue,which originated from vascular cam-bium,contains mainly parenchyma in which a few gathered vascular elemen

Abstract:以ＧＡＭＢＯＲＧ＇ＳＢ５为基础，附加激素２，４－Ｄ０．５ｍｇ／Ｌ，ＫＴ０．０５ｍｇ／Ｌ，分别以拟南芥菜的胚、根、子叶、下胚轴、营养期和开花期莲座叶为外植体进行培养，有愈伤组织形成；胚外植体先萌发出子叶和根，接着在延伸的下胚轴上长出愈伤组织。若将上述培养基碳源 由蔗糖改为葡萄糖，整个胚外植体都可形成愈伤组织。对莲座叶的培养发现，即使改变２，４－Ｄ深度为２．０ｍｇ／Ｌ，其它成分上进行植株再生的诱导，结

Abstract:Embryogenic calli was able to be formed from sainfoin cv. Eski hypocotyl explants culturedon MS medium containing 2,4-D0.5mg/L,KT1mg/L. Protoplasts were isolated from the callicultured continuously for 11-13 months after being transferred 6-15 days. When

Abstract:The respiration of apple fruits was sensitive to KCN during the development,insensitive to KCN and sensitive to CLAM from the outset of their climacteric.During the aging,the fruit discus carried out induced respiration which was inhibited with KCN and CL

Abstract:The geographical distribution,the center of distribution and differentiation of Dioscore-aceae,and the time of origin are discussed in this paper.Dioscoreaceae is generally a tropicalfamily, containing 9 genera and about 650 species and widely distributed

Abstract:There are about 14 genera with 63 species and 3 verities of subfamilies Alsnoideae andParonychioideae in Xinjiang. They are 66.7% in total genera and 48.2% in total species ofCaryophyllaceae in Xinjiang.On vertical distribution,plant of Alsinoideae and Pa

Abstract:本文对中国特有单种属－马蹄香属进行了细胞学研究，首次报道马蹄香花粉母细胞的单倍体染色体数目ｎ＝１３，体细胞的染色体数目为２ｎ＝２６，ｘ＝１３，核型公式为２ｎ＝１２ｍ＋４ｓｍ＋１０ｓｔ，染色体的范围２．５１－６．８０μｍ，为中型染色体，２Ｂ核型。这与前人报道的２ｎ＝２４，２Ａ核型和２ｎ＝４ｘ＝５２，染色体长度不超过１μｍ、是多倍体等结果均不相同。马蹄香是马兜铃科中最原始的属，核型资料表达它与细辛属部

Abstract:Species and kinds of plants are rich in the Zhongtiao Mountain in Shanxi province,thereare 935 species of spermatophytes in the area, belong to 479 genera,132 families.The florahas a very long history.There are various geographical elements among genera,i