沈阳地区11个东方百合品种几种同工酶的研究

应用聚丙烯酰胺凝胶电泳技术,对沈阳地区11个东方百合品种的可溶性蛋白及过氧化物酶(POD)、酯酶(EST)、超氧化物歧化酶(SOD)、多酚氧化酶(PPO)等同工酶进行了研究。由供试的11个东方百合品种间酶谱的聚类分析得出其平均遗传相似度为0.795,它们的遗传距离各有不同,在一定程度上存在丰富的遗传多样性,为其今后选择育种材料提供了依据。     

浅议侧柏直播造林技术

从林地选择、播种季节、造林方法、幼苗管理等方面阐述了侧柏直播造林技术,并总结经验教训,探索其技术要点。     

酸胁迫对几种林木体内脯氨酸及腐胺含量的影响

酸胁迫ＰＨ３．０）处理刺槐幼苗引起刺槐水势降低，电解质外渗增大，株高和干鲜重增长受抑。这些结果充分说明了酸胁迫对刺槐的伤害作用。酸胁迫下，刺槐苗根系游离脯氨酸含量相对较小，而腐胺则迅速累积。桂花、欧洲桤木、杨树等８个树种在酸胁迫下均表现出腐胺大量累积，这说明腐胺累积量可以作为植物遭受酸胁迫的一个内部生理指标。     

生漆的化学组成及成膜机理

对生漆的化学组成和成膜机理进行了综述,并简要地对生漆未来的研究方向进行了展望.     

武汉市木兰天池蝶类资源及区系组成初报

2009年6月对武汉市木兰天池进行了蝶类资源调查,共采集到蝶类标本388只,经鉴定武汉市木兰天池有蝶类40种,隶属于8科29属.根据调查结果,对蝶类区系组成进行了分析,表明该地区的蝶类以东洋界种为主.     

梁漱溟的文化思想综论

梁漱溟的文化思想理论始创于《东西文化及其哲学》一书。梁漱溟在“五四”时期一片推翻传统、倡导西化的浪潮中,为了拯救民族的危亡．高扬中国儒家文化的旗帜,创造性地重新解释儒家经典,试图创造一种全新的中国文化来指导中国的社会实践,探索一条中国式的观代化道路。     

Mechanisms of flight steering in locusts

Summary Steering in flight by locusts provides a well-studied example of the modulation of a rhythmic motor output by unpredictable inputs from outside to produce adaptive behaviour, in this case a form of locomotion. The simplest form, correctional steering, allows the animal to compensate for unintentional deviations from course. Its mechanisms are relatively well understood. The central nervous circuitry which makes this behaviour possible can be thought of as an autopilot. The entire process, from sensory input to the aerodynamic effects of changed motor outputs, is here reviewed. Intentional change of course, either spontaneous or induced by a change in the outside world, is more complex: it demands not only active steering, but also the temporary disablement of the autopilot. The mechanisms by which this could be achieved are discussed.     

Octopaminergic control of corpora allata activity in an insect

Summary Octopamine enhanced the release of JH3 from isolated corpora allata of locusts in short-term cultures. This effect was suppressed when phentolamine (inhibitor of the octopamine receptors) was added to the culture medium. Moreover an octopamine-sensitive adenylate cyclase was found in the corpora allata. The results suggest a positive octopaminergic control on the activity of the corpora allata.