园林植物根病的发生特点及防治策略

本文在阐述园林植物根病发生的一般特点的基础上,着重分析了根病诊断和防治困难的原因,提出了根病防治的一般原则,并明确了生物防治在土传病害中的特殊地位。     

杭州植物园野生维管植物调查

杭州植物园内共有野生维管植物501种、4亚种、30变种、1变型（隶属于119科365属）。本文除反映了有关物种种群个体的多度之外，突出地反映了其中归化植物44种、珍稀濒危植物5种，该园建园以来分布区已明显收缩的植物35种、2变种，濒于绝灭的植物27种、2变种，已经绝灭的植物31种、1亚种和自园外传入的植物28种、1变型，并初步分析了该园内物种及其种群分布的动态变化及其原因。     

芍药切花冷藏技术的研究

本文观察研究了STS预处理和保鲜液对干贮2-4个月后芍药切花开花率、花朵直径、品质及瓶插寿命的影响。结果:1、保鲜液对改善开花率、花朵直径、品质及瓶插寿命约有明显效果; 2、 STS预处理有保持开花率、改善花朵直径及品质的效果,但未能延长瓶插寿命;3、经STS预处理再插在保鲜液中开放的切花最好,冷藏3个月后,其开花率、花朵直径、品质及瓶插寿命仍与插在保鲜液中的未贮花相近。     

Chemical Composition of Garden Cress (<Emphasis Type="Italic">Lepidium sativum</Emphasis>) Seeds and Its Fractions and use of Bran as a Functional Ingredient

Garden cress (Lepidium sativum) belonging to the family Cruciferae grown in India, Europe and US is an underutilized crop. The edible whole seed is known to have health promoting properties. Hence, it was assumed that these seeds can be a functional food. A preliminary work on chemical composition of seeds was carried out and the possibility of using it as nutraceutical food ingredient in dietary fiber formulation was explored. Three fractions namely whole meal (WM), endosperm and bran were analyzed for chemical composition. The yield of the endosperm and the bran fraction were 72 and 28%, respectively. The WM, endosperm and bran had 22.5, 27.7 and 12.6% protein, 27.5, 33.1 and 6% fat, 30, 13.6 and 75% dietary fibre (DF), and 1193.00, 945.15 and 1934.57 mg% potassium respectively. The major protein on SDS-PAGE was of 29.5 kDa. The most abundant amino acid was glutamic acid (19.3%) and the essential amino acid, leucine was the highest (8.21 ± 0.01%) and methionine the lowest (0.97 ± 0.02%). The major fatty acid was linolenic acid (30.2%) and low amount of erucic acid (3.9%) was also present. Bran having high water holding capacity and high DF, its use as source of DF was explored. The product contained 12% protein, 4% fat and 74.3% DF and exhibited desirable functional properties such as dispersibility, gelling ability, stability, formed homogenous mild alkaline suspension and was comparable to proprietary DF.     

不同发育阶段牡丹和芍药切花开花生理特性的研究

 研究了牡丹‘赵粉’和芍药‘砚池漾波’切花花朵在不同时期的乙烯生成量、呼吸速率及脂肪酸含量的变化, 发现牡丹和芍药花朵的呼吸速率变化基本一致, 乙烯生成量呈现跃变型和末期上升趋势,并随着花朵的发育, 花瓣中不饱和脂肪酸指数逐渐下降。     

两个牡丹切花品种低温贮藏过程中抗氧化酶活性的变化

 本文报道了牡丹( Paeonia suffruticosa) 切花品种‘紫霞仙’和‘朱砂垒’在2℃低温贮藏过程中几种抗氧化酶活性的变化。结果表明, 两种牡丹切花随贮藏期延长瓶插寿命缩短, 花瓣中蛋白质含量下降, 丙二醛含量上升, 细胞膜相对透性增加; 同时, 超氧化物歧化酶活性和过氧化氢酶活性先上升后下降。品种间的差异在于‘紫霞仙’的开花率、盛花持续天数及几种抗氧化酶活性均高于‘朱砂垒’, 说明‘紫霞仙’比‘朱砂垒’抗衰老, 耐贮藏。     

The Art of Landscape Design of the Grand Sight Garden in Novel "The Story of the Stone"

The Grand Sight Garden in Chinese traditional novel "The Story of the Stone" takes an important position in Chinese traditional landscape architecture.In this paper,the aesthetic value of the Grand Sight Garden is analyzed and the real meaning and practical value of this fictitious "garden" is discussed from two aspects: composition structure and artistic conception.     

不同类型牡丹花的营养成分及体外抗氧化活性分析

选择5个牡丹品种,采用紫外分光光度计、荧光分光光度计、氨基酸自动分析仪和原子吸收分光光度计,测定了牡丹花中多酚类物质、维生素、氨基酸和10种矿物元素的含量;体外法分析了牡丹花水提液清除O2-和·OH的效能。结果表明:5个牡丹品种花瓣中含有丰富的多酚类物质、维生素、蛋白质、矿物质;所含氨基酸种类齐全,必需氨基酸和呈味氨基酸含量较高;不同品种牡丹花水提液清除O2-和·OH的效能有明显差异,清除O2-的能力高于清除·OH的能力。综合分析认为牡丹花具有较高的营养价值,值得进一步研究开发。     

大花重瓣丁香和紫叶重瓣丁香的促成栽培试验

对大花重瓣丁香和紫叶重瓣丁香进行促成栽培试验.结果表明:摘叶法促成栽培时,紫叶重瓣丁香更适于在同一月份进行单株叶子全部摘除,其展叶期与开花期都提前,且花期也长;而不同时间全部摘叶2个品种均以8月份和9月份进行对开花特性的影响好.升温法促成栽培时,要求平均积温日数19 d,平均最高积温498℃,平均最低积温296℃.