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关键词： 植物生物学   指导   实验室   细胞   分子  

摘要： 《细胞和分子植物生物学实验室指导》(A laboratory guide for cellular and molecular plant biology)由***和***-Chhetri编著,1991年Birkhauser出版,386页。该书有下列章节。1.细胞技术;2.转化技术;3.提取技术;4.基因组和基因结构及功能分析领域;5.细胞学技术;6.附录;7.主题索引。索书号:58.82073/L123

关键词： 植物病毒   硝酸   纤维膜   氮化合物   植物组织  

摘要： 本文介绍了最新发展的检测植物病毒的3种分子生物学方法,一是直接把植物组织切块点在硝酸纤维膜上,通过免疫反应来检测植物病毒,其优点是早期快速,在间接免疫法中1天可以完成实验,直接免疫法3小时可以完成检测。特异性强,应用了病毒的单克隆抗体后特异性更强,方便易行、准确性高;二是直接把植物组织汁液或提取的病毒核酸点样于硝酸纤维

关键词： 植物   实验室主任   生物学   病虫害   病虫草害  

摘要： 植物病虫害生物学实验室设在中国农业科学院植物保护研究所。实验室主任为何礼远研究员,副主任为周大荣研究员。学术委员会主任为郭予元研究员。主要学术带头人;何礼远研究员、周大荣研究员、郭予元研究员、李光博研究员,周广和研究员、黄大坊副研究员、成卓敏副研究员等。

关键词： 分子生物学   植物细胞   原生质体分离   实验室  

摘要： 近年来,由于植物分子生物学研究的迅速发展,许多原先用细胞生物学知识无法解释的问题可以迎刃而解了。但由于各国学者所从事的工作都不同程度地受到仪器设备与技术条件的限制,所采用的方法有很大差异,得到的结论显得零星分散,有的甚至是不协调的。同时,新的实验技术不断涌现,并推动着分子生物学的迅速发展,为此,迫切要求更多的细胞生物学工作者能掌握并运用分子生物学方法研究与解决尚未被人类所阐明的问题。最近,蒙友人相赠得一册《植物细胞与分子生物

关键词： GONDWANA   SEED FERNS   PERMINERALIZED PEAT   PHYLOGENY  

摘要： The discovery of permineralized glossopterid reproductive organs from Late Permian deposits in the Beardmore Glacier region (central Transantarctic Mountains) of Antarctica provides anatomical evidence for the adaxial attachment of the seeds to the megasporophyll in this important group of Late Paleozoic seed plants. The position of the seeds is in direct contradiction to many earlier descriptions, based predominantly on impression/compression remains. The attachment of the ovules on the adaxial surface of a leaf-like megasporophyll, combined with other features, such as megagametophyte development, suggests a simpler gymnospermous reproductive biology in this group than has previously been hypothesized. These findings confirm the classification of the Glossopteridales as seed ferns and are important considerations in discussions of the phylogeny of the group, including their suggested role as close relatives or possible ancestors of the angiosperms.

关键词： 早春植物   生物学   生态学  

摘要： 本文根据作者对乌鲁木齐附近的早春植物在春季生长,发育节律与水热等主要生态因子的关系的观测,论述了它们的生物学和生态学特点,为充分利用早春植物萌发返青早,生长发育快的优势,为合理开发利用,改良建设这类草场提供科学依据。

关键词： CHIRONOMIDAE   MACROPHYTES   FOOD   CHALK STREAMS   DIATOMS   LIFE CYCLES  

摘要： Submerged macrophytes are a conspicuous feature of chalk stream ecosystems, supporting large populations of diatoms and invertebrates, including larvae of the nematocerous family Chironomidae. Close temporal and spatial association is evident between chironomid larvae and diatoms, and diatoms are frequently a major component of the food of midge larvae. Larvae provided with food that is rich in diatoms survive better and grow and develop more quickly than larvae that are supplied with food that is predominantly fine organic detritus. First instar larvae selectively feed on diatoms but it is likely that selection is on the basis of particle size, rather than for diatoms per se. These species of epiphytic larvae (2 Cricotopus spp. and Eukiefferiella ilkleyensis) transfer to a diet that is predominantly of fresh plant material (Ranunculus calcareus leaves) in the third and fourth instar. The life cycle strategies of many species of Orthocladiinae equip them to exploit temporarily favourable environmental conditions very rapidly and effectively. This fact helps to explain the coexistence of species with similar strategies of resource utilization, as part of the normal epiphytic fauna of chalk streams.

关键词： .pump   meeting report   plant membrane   plant transport  

关键词： 植物生理学∶分子生物学   分子生物学∶植物生理学  

摘要： Risk spreading of germination may be particularly common in environments with unpredictable climates. Germinability, propensity to germinate at different temperatures and germination speed were classified for seeds of 105 species from the central Australian arid zone, and related to plant growth form, perenniality, seed size and seed dispersal mode. Almost all species had at least some seeds which were dormant, consistent with the idea that risk spreading is important in arid zones. Dispersal mode and plant perenniality were not found to be associated with germinability. Seeds of most species germinated rapidly relative to what has been recorded from higher-rainfall environments, as might be expected in an environment where wet soils are usually temporary. Faster germination tended to be associated with low germinability, suggesting a spectrum of strategies from species that risk a small number of their seeds in many rainfall events, to those that germinate only in large rainfall events but then risk large numbers of seeds.