基于虚拟器官的植物可视化

提出一种基于虚拟器官的植物可视化方法。该方法将真实植物器官的生理和形态属性抽象为虚拟器官的属性,以虚拟器官间的关系描述虚拟植物的形态,并通过对虚拟器官属性的变化来实现对整个植物生长过程的模拟。虚拟器官的属性变化由生长规则所控制。生长规则依据虚拟器官的属性和当前的环境属性来决定下一生长周期虚拟器官属性的变化。环境属性的变化由虚拟环境根据环境变化规则来模拟。植物最终的3D形态,由3D引擎通过读取各个虚拟器官的属性来进行展示。实验证明该方法能够对植物生长进行逼真的模拟。

Abstract：

A virtual organ based plant visualization method was proposed.Virtual organ was the representation of physiological and geometric attributes of real plant organ.And the relation among virtual organs was used to describe structure of plant.The process of plant growth controlled by growth rules could be realized by changing attributes of virtual organ.The attributes of virtual organs in the next growth period were determined by growth rules according to the current attributes of virtual organs and environment.The attributes of environment whose changes were controlled by variation rules were simulated by virtual environment.Finally 3D graph of visual plant was rendered by 3D engine which read the attributes of virtual organs to control the rendering process.Experiments show that plant growth can be simulated realistically by this method.     

不同改良剂对镉污染土壤上生长的油麦菜生理生化特性的影响

盆栽试验研究不同改良剂对镉污染土壤上油麦菜生理生化特性的影响。结果表明,在镉严重污染的酸性土壤上,改良剂的施用可引起油麦菜生理生化特性产生变化。泥炭、赤泥+泥炭、石灰+赤泥处理对叶绿素a含量增加影响最显著,泥炭处理对叶绿素b含量增加影响最显著,泥炭、赤泥+泥炭、石灰+泥炭处理对叶绿素a+b含量影响最显著。石灰+赤泥+泥炭处理对油麦菜过氧化氢酶活性的降低影响最显著。石灰+赤泥处理对油麦菜过氧化物酶活性降低的影响最显著。除了赤泥,其他改良剂的施用均可显著提高油麦菜可溶性糖含量,其中石灰+赤泥+泥炭处理的效果最好。泥炭、石灰+赤泥、石灰+赤泥+泥炭的施用使油麦菜可溶性蛋白含量显著降低。赤泥的施用使油麦菜维生素C含量显著提高。     

“新丰宝”植物生长促进剂对干旱条件下小麦幼苗NR活性和PRO含量的影响

本文以２６３１小麦为材料,研究了干旱条件下“新丰宝”植物生长促进剂浸种的小麦幼苗ＮＲ活性和Ｐｒｏ含量的变化。结果表明,用“新丰宝”浸种后的小麦幼苗ＮＲ活性和Ｐｒｏ含量都有所提高,叶片水分状况较好。     

月季切花采后生理与保鲜技术

综述了月季切花采后生理与保鲜技术研究概况．认为月季切花采后衰老是由于水分代谢失调,导致呼吸消耗增强,生物大分子降解和乙烯生成,最后引起生物膜结构和功能破坏的结果,并提出了今后的研究方向和有效的保鲜途径．     

安太堡露天煤矿新垦土地植被恢复的探讨

按照植被类型分别对引种植物进行研究,以寻找适应安太堡露天煤矿新垦土地植被恢复的最适植物。结果表明：豆科牧草适合做复垦的先锋植物;沙棘（Ｈｉｐｐｏｐｈａｅｒｈａｍｎｏｉｄｅｓ、柠条（Ｃａｒａｇａｎａｋｏｒｓｈｉｎｓｋｉ）等少数灌木生长优势明显;刺槐（Ｒｏｂｉｎｉａｐｅｓｕｄｏａｃａｃｉａ）和新疆杨（Ｐｏｐｕｌｕｓａｌｂａｖａｒ．ｐｙｒａｍｉｄａｌｉｓ）为优良树种,可用于安太堡露天煤矿和黄土区类似矿区植被恢复选用     

决策支持系统在植物保护上的应用

决策支持系统(DSS)是一种支持半结构化和非结构化决策的动态交互式计算机辅助系统。建立有效的信息报道及决策体系是现代植物保护工作的发展趋势。综述了国内外植物保护决策支持系统的开发和应用现状,分析了现代技术对植物保护DSS的推动作用,提出了基于GIS的DSS、结合RS和GPS的DSS及基于互联网的DSS是DSS开发的重要方向,对植物保护DSS的应用前景进行了展望。     

Calmodulin-associated post-translational regulation of rat organic cation transporter 2 in the kidney is gender dependent

In this work, regulation of organic cation transporter type 2 from rat (rOCT2) stably transfected in HEK293 cells was investigated by microfluorimetry with 4-(4-(dimethylamino)styryl)-N-methylpyridinium as substrate. The transport mediated by rOCT2 was specifically stimulated by PKA, phosphatidylinositol-3-kinase, p56^lck tyrosine kinase, mitogen-extracellular-signal-regulated-kinase-1/2, calmodulin (CaM), and CaM-kinase-II. The regulatory pattern of rOCT2 differs markedly quantitatively and qualitatively from that of other OCT isoforms. Only CaM-dependent upregulation is conserved throughout the OCT family. For this reason, CaM regulation of rOCT2 was also investigated in isolated S3-segments (known to express only rOCT2) of male and female rat proximal tubules. Inhibition of CaM by calmidazolium significantly decreased rOCT2 activity (−49.0 ± 13.6%, n = 4) in male but not female (9.0 ± 13.0%, n = 4) rats. Real-time PCR and Western blot investigations of CaM expression in rat kidneys showed that male animals have significantly higher CaM expression. This is the first study describing post-translational gender-dependent rOCT2 regulation. Received 26 February 2009; accepted 16 March 2009     

基于植物多样性的武汉市道路绿化研究

在采用抽样调查方法对武汉市区道路绿化进行调查的基础上,分析了武汉市道路绿地的物种组成、物种丰富度、频度及植物多样性组成.结果表明:武汉市区道路绿地植物种类共有64种,其中木本植物55种,占总数的85.9%.木本植物中常绿树种37种,落叶树种18种;乔木19种,灌木36种.在乔木层中,桂花、二球悬铃木、樟树、欧美杨、雪松、广玉兰等的出现频度及丰富度均较高;灌木层中出现频度及丰富度较高的植物有:红花檵木、海桐、石楠、月季、紫叶李等,并针对城市绿化现状与存在的问题提出了道路绿地建设的建议和对策.     

植物生长调节剂诱导龙眼果实无核化效应

对在福建主栽的大核龙眼品种‘乌龙岭'进行了植物生长调节剂赤霉素(GA3)、6-苄氨基嘌呤(6-BA)、2,4,5-三氯苯氧丙酸(2,4,5-TP)、多效唑(PP333)和青鲜素(MH)等诱导果实无核化的试验.结果表明:5种植物生长调节剂均在不同程度上诱导龙眼果实形成焦核和小核果;6-BA和MH是效果较好的龙眼果实无核化诱导剂;效果最好的两个处理分别为6-BA(100 mg/L) CPPU(30 mg/L)和MH(800 mg/L) CPPU(30 mg/L),其果实核重分别比对照减少38.5%和38.0%,单果重分别为9.77 g和8.42 g,可溶性固形物分别为18.57%和18.23%,小核率分别达62.2%和83.3%.