Abstract:长豇豆花药壁的发育为基本型。绒毡层周原质团型，小孢子母细胞减数分裂粗线期至末期Ⅱ，相邻小孢子母细胞间存在胞质通道。四分体多为四面体型，少数为左右对称型。生殖细胞刚形成时，壁呈ＰＡＳ负反应，以后为ＰＡＳ正反应。生殖细胞游离在营养细胞质内后，壁消失。成熟花粉为２细胞型。在小孢子早期，首次观察到在周原质团型绒毡层细胞外切向壁的外方，有很多直径约２－４μｍ，含不溶性多糖、蛋白质和抗乙酰解物质的球形颗粒，以后这些颗粒沿绒毡层细胞的径向壁进入药室，同时在小孢子壁和原生质体之间也出现了同样的颗粒。小孢子外壁增厚的同时，颗粒消失。关于这些颗粒的作用，有待进一步深入探讨。

Abstract:过去所得的实验表明，植物中ＡＴＰａｓｅ活性变化与耐冷性有关。春小麦和番茄对低温是非常敏感的，当将这两种植物的幼苗在低温下培养时，质膜ＡＴＰａｓｅ活性下降甚至消失。相反，在冬小麦中，当幼苗在低温下处理时，质膜ＡＴＰａｓｅ活性增加．为了研究ＡＴＰａｓｅ同工酶变化与植物耐冷性之间的关系，以小麦等四种植物为材料，在０－１℃低温下处理２天、２周和４周，然后检测幼苗根系内的ＡＴＰａｓｅ同工酶，结果发现，在０－１℃培养时，幼苗根系内ＡＴＰａｓｅ同工酶谱带减少，ＡＴＰａｓｅ同工酶谱带变化与植物幼苗耐冷性呈一定相关性。ＡＴＰａｓｅ同工酶谱带变化可能是受冷害所致。

Abstract:对５种基因型幼胚诱导的愈伤组织继代培养表明，玉米胚性愈伤组织的长期继代受基因型，培养基成分，激素，培养条件的影响。适时继代，逐代筛选对胚性保持起重要作用。适当降低培养温度（１２±２℃）有利于愈伤组织的保存和胚性保持，可以减少愈伤组织长期继代所需的物质和工作量。长期继代培养的胚性愈伤组织，胚状体发生能力和植株再生率无显著变化，但正常苗的再生频率显著下降。观察愈伤组织细胞染色体发现：（１）基因型对不同倍性细胞的比例有明显影响。（２）随着继代时间的延长，二倍体细胞下降，四倍体和非二倍体细胞增多。（３）愈伤组织中出现多种染色体结构变异，这些结构变异有可能导致非整倍体细胞的形成。

Abstract:For determing the distribution and concentration of berberine in Coptis rhizomes,sectionswere cut from the fresh rhizomes and placed immediately in the various reagents in the previousresearches.But in present research,the fresh rhizomes were cut into 0

Abstract:The pure tubulin of chicken brain was obtained through assembly-disassembly process,andwas used to inject three rabbits to get its antibody. The microtubule network of fritillary callus cell was showed through immunoenzymological technique. From this res

Abstract:在离体培养条件下，石刁柏茎与自然条件下的相比，茎端的解剖结构相同，所不同的是离体培养的茎，机械组织发达，木质部中导管排列不规则。离体培养的根与种子根相比变化较大。离体培养的根薄壁细胞大，根为四原型。木质部与韧皮部相对位置不规则，无明显的髓部，中柱与皮层的比例更小。它具有两种起源。其一，起源于茎基产啊节处，根维管束与茎维管束连接，具这类根的再生植株，移栽成活率高；其二，起源于茎基部的切口处愈伤组织，

Abstract:The development of the anther wall,special of the tapetum,in lilium brownii F.E.exMiellez var. viridulum Baker,which living in LiuBa County,were studied morphologically. Theontogeny of anther wall layers belong to basic type. The development of tapetum is

Abstract:The develpmental process of fleshy and accrescent peduncle in Hovenia dulcis Thunb.maybe divided into four stages. The early stage is a primary growth stage. The inner structure in pe-duncle is similar to the primary structure in stem of dicotyledons at

Abstract:There was no change on molccular weight of small and large subunits of Rubisco purifiedfrom Swamp-reed and Sand dune-reed(Phragmites communis)distributed in the Hexi Corri-dor, Gansu Province. There was different amino acid composition in Rubisco purifie

Abstract:Light was used to treat the etiolated younng wheat seedlings. The results showed that afterthe treatment of Light,the etiolated leaf turned to green,the LOX activity in it decreased dramat-ically,meamwhile,the MDA content. chlorophyll content and the me

Abstract:Comparsion of accumulation of dry matter and nutrient uptakes between sterile hybrid rapessuch as hybrid_(37) and_(35)and ,the traditional rape cultivar s_(75-1)was made. Results indicated that vege-tation growth, reproductive growth and uptakes and accu

Abstract:Decapitated-derooted peanut plantes were supplied with BA via upper leaf(sink leaf).BAadjusted the changes of contents of ATP,ADP and AMP and increased Energy Charge in sinkleaf by BA-treated.It showed that sink leaf had a higher ability using for resynt

Abstract:The changes of soluble proteins,plasma membrane permeablity,MDA, membrane fattyacids and their contents in petals and leaves of tulips(Tulopa gesneriana cv Yellow Oxford )dur-ing vase-holding life were studied.The relationship between cut tulips senesce

Abstract:延安万花山不同生境下矮牡丹种群年龄结构与表现结构的分析结果表明：天然侧柏林缘下的矮牡丹种群属稳定发展的种群，其动态符合负指数方程Ｎ＝１７７４。０１４，ｅ＾－０．１３７５ｔ。而在较郁闭的辽东栎林下，矮牡丹种群呈阶段性更新循环。种群平均密度和单株最大年龄与所处生境有关。种群的表现结构因样地所在的环境条件不同，种群的年龄结构不同，以及生长速度的不同而有较明显的差异。

Abstract:Orychophragmus violaceus is a very valuable seed source of wild oil crops.The studied pres-ence on its agricultural properties,oil content of seed,amino acid content of scape and edible secu-rity, etc. were summarized in this paper.Furthermore,the sugges