苏州古典园林主要群植植物生态关系

文章采用传统的植被生态研究模式对苏州四大古典园林主景区的人工植物配置情况进行调查。结果得出在调查地成正联结关系的种对有木瓜-石榴、云南黄馨-梅花、紫叶李-腊梅、云南黄馨-贴梗海棠、石榴-紫薇、腊梅-石榴、木瓜-柳树、贴梗海棠-柳树,为园林植物的优化配置提供了生态学参考依据。       

提取方法对石榴籽油提取率及抗氧化活性的影响

考察加热回流提取、超声波辅助提取、微波辅助提取3种方法中不同溶剂对石榴籽油的提取率的影响,并进行性状检查;采用Schaal烘箱法(60±1℃)比较各提取物的体外抗氧化的作用。结果表明,以石油醚为溶剂在3种方法中提取率均为最高,且产品纯净无杂质,并有特殊香味;3种提取方法的提取率和抗氧化活性略有不同,但无显著性差异。超声法和微波法由于提取时间短,效率高更具有优势。     

江苏绿化树种耐涝性调查

１９９１年特大洪灾后，作者对南京，无锡，苏州等的绿化树种，尤其是园林树种的耐涝性进行了调查。根据树木水淹后的反应将树木耐涝性分为三级，敏感，中等耐涝和耐涝，共调查树种８６种（品种）获得了一些对树木耐涝性的新认识，对影响树林耐涝性的因子进行了讨论。     

Antibacterial activity of Punica granatum

Successive petroleum ether, chloroform, methanol and water extracts of Punica granatum were tested (in vitro) for their antibacterial activity. The methanolic extract was found to be most effective against all tested microorganisms.     

Antioxidant activity of Punica granatum fruits

Arils, juice and rinds of Punica granatum fruits and their aqueous and ethyl acetate extracts displayed good antioxidant activity.     

Constituents of the flowers of Punica granatum

A new polyphenol compound named pomegranatate (1), together with, ellagic acid, 3,3',4'-tri-O-methylellagic acid, ethyl brevifolincarboxylate, urolic and maslinic acids, and daucosterol were isolated from the ethanolic extract of the flowers of Punica granatum. The structure of compound 1 was determined by spectroscopic analysis. Maslinic acid exhibited antioxidant activity, evaluated by measurement of LDL susceptibility to oxidation.     

Composition and alpha-amylase inhibitory effect of essential oils from Cedrus libani

The inhibitory activity of alpha-amylase and the phytochemical composition of Cedrus libani essential oils obtained from wood, leaves and cones were investigated. The C. libani woods oil exhibit an IC(50) value of 0.14 mg/ml, whereas the leaves and cones oils were devoid of any significant activity.     

石榴硬枝扦插技术

石榴扦插于春季采用粗壮的１年生枝条扦插,不经处理,其成活率可达到９５％以上,苗木当年即可出圃栽培。     

alpha-Glucosidase inhibitory activity of Mangifera indica bark.

The ethanolic extracts of Lawsonia inermis leaves, Holarrhena antidysenterica bark, Swertia chirata whole plant and Mangifera indica bark were tested (in-vitro) for alpha-glucosidase inhibitory activity. M. indica extract was found to be the most potent, with an IC(50) value of 314 microg/ml.     

Alpha-amylase inhibitors from Brazilian seaweeds and their hypoglycemic potential

The acetone crude extract of Lobophora variegata did not show any alpha-amylase inhibition activity. On the contrary, acetone crude extract of both Spatoglossum schroederi and Caulerpa racemosa inhibited the enzyme activity, with an ED(50) of 0.58 and 0.09 mg/ml.     

干旱胁迫对华南地区三种苗木膜脂过氧化及保护酶活性的影响

文章研究了华南石灰岩地区常见植物任豆,以及两种石灰岩地区造林供选树种楝叶吴莱萸、石斑木在干旱胁迫下体内丙二醛（MDA）含量、超氧化物歧化酶（SOD）活性、过氧化物酶（POD）活性的变化,为在石灰岩地区筛选优良的抗旱节水树种提供了科学的理论依据。试验结果表明,三个树种在干旱胁迫下都表现出MDA含量先升高后降低的趋势,其中楝叶吴莱萸在干旱胁迫第9d最先达到峰值（5．08μmol／gFW）,任豆和石斑木第12d达到峰值,分别为4．46和3．35txmol／gFW。苗木SOD活性也都表现出先增大后减小的规律,在中度干旱时期达到峰值,楝叶吴茱萸和任豆的SOD活性在干旱胁迫的第9d达到峰值,分别为384．89和445．07U／g,石斑木SOD活性则在第12d达到峰值517．40U／g。POD活性呈先升高后降低再升高的趋势,石斑木与另两种植物比较,第一个峰值更迟出现,第二个POD活性峰值为1490．24mg·g^-1·min^-1,是三者中最高的。经过对三项指标的综合分析并结合植物的抗旱性表现可知,三个树种中石斑木的适应性较强,抗旱性能较好,其次是任豆,楝叶吴茱萸的抗旱能力较差。     

观赏石榴及在园林绿化中的应用

观赏石榴也称花石榴,是以观赏为主的石榴品种总称,其树形优美,干形扭曲,苍劲古朴,千姿百态,自然成景,叶碧绿而有光泽,花朵硕大,重瓣,花色丰富,花期长,果实色泽鲜艳,是夏、秋季节不可缺少的观赏花卉.可种植于庭院、公园、居民小区等处,是典型的观赏树种,又是制作树桩盆景和观果盆景的良好树种.     

Antimicrobial activity of the Derris elliptica, Derris indica and Derris trifoliata extractives

Various parts of Derris elliptica, Derris indica and Derris trifoliata on fractionation with a number of solvents (petrol, dichloromethane, ethyl acetate, butanol and methanol) gave fractions which demonstrated a varied level of broad spectrum antibacterial activity. Good activity was exhibited by the methanol fractions of the leaves and root heart-wood, petrol, butanol and methanol fractions of the root bark of D. indica and petrol and ethyl acetate fractions of D. trifoliata. None of the plants showed antifungal activity.     

Constituents of Carapa granatum fruits

The isolation of 6alpha,11beta-diacetoxygedunin (1) and other minor constituents from Carapa granatum fruits is reported.     

4种不同石榴品种同工酶分析

采用聚丙烯酰胺垂直平板不连续凝胶电泳技术,对安徽省怀远4个石榴品种的过氧化物酶(POD)同工酶和酯酶(EST)同工酶进行了酶谱测定。研究结果表明:供试4个品种间,均含有1条共同的谱带,但又含有丰富多态性,其中芽变新品种的白玉和其母本谱带极为相似,但稍有差异,说明两者亲缘关系极近,变异后遗传物质确实改变。玉石籽与大笨子的亲缘关系较为接近。     

临潼石榴遗传资源的研究

对陕西临潼石榴多个性状的变异情况进行了研究;编制了该地区石榴品种检索表;对主栽品种的根尖细胞染色体数进行了观察;并对该地区石榴资源的利用和发展提出了建议。     

花江峡谷示范区主要经济植物病虫害及防治对策

经过野外调查与初步鉴定整理，花江峡谷喀斯特石漠化综合防治技术示范区，花椒病虫害26种，金银花病虫害3种，石榴病虫害10种，砂仁病虫害1种，葡萄病虫害3种，对主要病虫害提出相应的防治对策。     

Antibacterial activity of the essential oil from Aristolochia indica

The essential oil of Aristolochia indica, containing beta-caryophyllene and alpha-humulene as major constituents, was found to show a moderate antibacterial activity.     

Flavonoids from Punica granatum--potential antiperoxidative agents

Fractions rich in flavonoids obtained from the fruits of Punica granatum extract, orally administered to rats at dose of 10 mg kg(-1) day(-1), showed potential antiperoxidative effect. Concentrations of malondialdehyde, hydroperoxides and conjugated dienes were significantly decreased in liver while the activities of the enzymes catalase, superoxide dismutase (SOD), glutathione peroxidase and glutathione reductase showed significant elevation. Concentrations of glutathione in the tissues were also increased.     

HIV-inhibitory diterpenoid from Anisomeles indica.

The 1H- and 13C-NMR spectral data of ovatodiolide (1), a diterpenoid from Anisomeles indica, and its anti-HIV activity are reported.