紫叶李在高温高湿条件下色素含量及光合速率的研究

用分光光度法和CI-340便携式光合测定系统,测定了紫叶李在不同温湿度条件下光合色素含量变化和光合速率日变化.结果表明:(1)紫叶李叶片中叶绿素a、叶绿素b和类胡萝卜素的含量随着温度的升高而增加,随湿度的增加而减少,花青素含量在高温高湿条件下逐渐降低.(2)紫叶李的光合速率在大田自然条件下呈不对称双峰日变化曲线,而在高温高湿条件下午休现象消失,光合速率随温度的升高而增强.     

地方性沙地植物生态恢复和景观营造初探——以萨拉乌苏国家湿地公园为例

指出了沙地景观营造因兼有沙地生态恢复的特殊性而日益受到景观设计者的关注,以萨拉乌苏国家湿地公园为研究对象,从生态恢复性、使用功能性和景观地方性三个方面出发,在GIS分析的基础以及沙地植物的大体演替规律上,进行了沙地立地条件的划分,分析了不同坡向植物群落结构。并从国家湿地公园的角度,进一步规划了场地的空间分区和游线组织,布置了结合地方性和功能性的景点,以期使沙地植物景观不仅满足功能性的游览需求,也满足了防风保育的生态功能。     

鲜食芙蓉李优质栽培技术

芙蓉李丰产性好,品质不高,长期以来主要用作原料李.围绕生产高品质果品的主题,笔者对本地区芙蓉李栽培进行了长时间的调查和研究,认为提高果品的质量,增加果农的经济收益,需要从以下几个方面进行改善和提高芙蓉李栽培技术.     

干旱区3种彩叶植物的光合特性

以3 a生紫叶李(Prunus cerasifera Ehrhart f.atropurpureaJacq)、紫叶矮樱(Prunus×cistena Pis-sardii)、紫叶桃(Prunus persicacv.atropurpurea)为试材,研究3种彩叶植物的光合作用基本生理特征和规律。结果表明,紫叶桃、紫叶李和紫叶矮樱的光补偿点分别为12、24和92μmol.m-2.s-1;光饱和点分别为1 044、688和1 196μmol.m-2.s-1;表明紫叶矮樱较为喜阳,在园林绿化配置时应处于群落的上层。紫叶李与紫叶矮樱有明显的光合午休现象,主要是由气孔导度下降引起的,紫叶桃是由非气孔因子限制的。3种植物的蒸腾速率都为午后高峰型。环境因子地表温度日变化大于地下温度日变化,地表湿度与地表温度日变化成反比。     

A Study on Thought of Tea of Hanjae Yi-mok＇s Da-bu

The Da-bu of Hanjae Lee mok （1471-1498） is known as an original masterpiece,which is predominantly documented in Korean tea books.He had always spared no effort to put Confucianists＇ theories and thoughts into practice during his 28-year career.Da-bu tea magnificently reflected his concepts of Confucianism in conjunction with tea-drinking activities.The main contents of Da-bu have included written authors,tea species and production,landscape of tea cultivation,tea plants and leaves,ways of tea-drinking and three-grade tea,tea song of seven cups,5 merits and 6 moralities of tea,benefits of tea-drinking,tea comprehension,etc.According to the views of contents,tea of Hanjae Leemok is the only partner with which we can share life and it can also be beneficial to healthy diets.Not only does it have become part of our daily life,but also be a medicine for our physical and mental disease.He composed the tea song of seven cups,which sufficiently expressed a real practice of the pursued ideal state of Confucianism and Taoism.He also promoted a drinking tea for health enrichment of Confucianists.According to the analytical results of Da-bu,Hanjae＇s tea has recognizably become the personally real practice of Confucianism and state.He had reached the enlightenment for the state of birth and death.After consuming tea,his body and mind immediately changed to the state of joys and wonderland,and also he illustrated that this feeling is not a one-off state,it always comes out whenever drinking.Therefore,based on Hanjae Lee mok,tea drinking is not only the regiment for healthy benefits,but also it is a training method,＂ Dado in My Heart＂,for individuals to train their mind,body,and morality.     

侵染白菜的黄瓜花叶病毒分离物基因组的全序列分析

对浙江省杭州地区白菜（Brassica campestris L. ssp. chinensis var. commuis Tsen et Lee.）上获得的CMV分离物（CMV-CTL）进行了全长克隆和基因组序列分析。结果显示：CMV-CTL的RNA1（GenBank序列号：EF213023）全长为3357个核苷酸（nt）,编码993个氨基酸（aa）的1a蛋白;RNA2 （GenBank序列号：EF213024）全长为3047 nt ,编码858 aa的2a蛋白和111 aa的2b蛋白;RNA3 （GenBank序列号：EF213025）全长为2217 nt,编码278 aa的MP蛋白和218 aa的CP蛋白。序列相似性分析表明,CMV-CTL与CMV亚组IB中株系IA相似性最高,RNA 1、RNA 2和RNA3与该株系的相似性分别为91.3%、91.3%和93.6%。CP基因和RNA 3 的5' NTR核酸序列系统发生树分析表明,CMV-CTL与中国大多数CMV分离物一样,属于CMV亚组IB。