检索结果-南通市图书馆

Journal of Forestry Research 2023年第6期34卷 1707-1721页

作者： Lan Yang huie li College of Agriculture Guizhou UniversityGuiyang 550025People’s Republic of China

Tsutsusi is one of the eight subgenera of the Rhododendron *** Tsutsusi species,***,***,***,and ***,have high ornamental and medicinal values,resulting in an increasing market *** species thrive in cool and humid environments and are widely distributed in Europe and *** global climate warming will affect the distribution of these valuable resources remains ***,this study analyzed the climatic suitability of these species for the first time on the basis of 1552 geographical distribution points and 19 bioclimatic factors using the maximum entropy *** results show that a suitable distribution area for all four species would decrease under climate *** main bioclimatic factors affecting their distribution are the mean temperature of the coldest quarter for ***,the mean diurnal range for ***,and precipitation of the warmest quarter for *** and *** addition,the contribution of the temperature-related bioclimatic factors to the distribution of *** and *** is higher than that of the associated precipitation-related climatic factors;in contrast,the contribution of precipitation-related bioclimatic factors to the distribution of *** and *** is higher than that of the temperature-related climatic *** results provide references for the introduction,conservation,sustainable development,and utilization of these four species in the future,and may also provide information with regards to other Rhododendron species.

关键词： Rhododendron simisii Rhododendron indicum Rhododendron schlippenbachii Rhododendron oldhamii Climate change Future distribution

Comparison of photosynthesis and antioxidative protection in Sophora moorcroftiana and Caragana maximovicziana under water stress

在线全文

学校读者我要写书评

暂无评论

Journal of Arid Land 2014年第5期6卷 637-645页

作者： QiQiang GUO WenHui ZHANG huie li Ministry of Education Key Laboratory of Environment and Ecology in West China Northwest A&F University Tibet Agricultural and Animal Husbandry College National Key Station for Field Scientific Observation&Experiment

This study aims to investigate the protective roles of photosynthetic characteristics and antioxidative systems in the desiccation tolerance of Sophora moorcroftiana and Caragana maximovicziana as they adapt to arid environments. A variety of physiological and biochemical parameters in the leaves of two Leguminosae species were monitored for 1, 7, 14, 21 and 28 d of drought stress. Soil water content decreased from 38.58% to 7.33% after exposure to 28 d of water stress. The photosynthetic carbon-assimilation rates of the two Leguminosae plants decreased for non-stomatal limitation with processing water stress. The malondialdehyde content and cell membrane relative conductivity of the two species increased significantly from 1 to 21 d and then decreased. S. moorcroftiana showed higher superoxide dismutase and peroxidase activities than C. maximovicziana during the 28 d treatment period. However, the catalase activities and proline content of C. maximovicziana were higher than those of S. moorcroftiana before the water stress treatment reached 21 d. Nine physiological and biochemical parameters were selected to comprehensively evaluate the two species＇ drought-resistance by the membership function values（MFV）. The mean MFV indicated that S. moorcroftiana has a relatively stronger drought defense capability than C. maximovicziana. S. moorcroftiana mainly uses carbon-assimilation rate and osmotic adjustment to combat water deficiency.

关键词： Sophora moorcroftiana Caragana maximovicziana photosynthesis characteristic antioxidative protection drought stress

Comparative study on the chloroplast genomes of five Larix species from the Qinghai-Tibet Plateau and the screening of candidate DNA markers

在线全文

学校读者我要写书评

暂无评论

Journal of Forestry Research 2021年第5期32卷 2219-2226页

作者： Qiqiang Guo huie li Zengqiang Qian Jie Lu Weilie Zheng Institute for Forest Resources&Environment of Guizhou/College of Forestry Guizhou UniversityGuiyang 550025People’s Republic of China College of Agriculture Guizhou UniversityGuiyang 550025People’s Republic of China College of life Sciences Shaanxi Normal UniversityXi’an 710062People’s Republic of China Key Laboratory of Forest Ecology in Tibet Plateau(Tibet Agriculture&Animal Husbandry University) Ministry of EducationNyingchi 860000TibetPeople’s Republic of China Institute of Tibet Plateau Ecology Tibet Agriculture&Animal Husbandry UniversityNyingchi 860000TibetPeople’s Republic of China

Five Larix species(***,***,***,***,and *** ***),have survived on the Qinghai-Tibet Plateau(QTP)under specific climate conditions for *** lack of genomic information seriously hinders research on the evolution,conservation and ecology of these Larix *** this study,complete chloroplast(cp)genomes of the 5 species were assembled and compared based on next generation sequencing technology combined with polymerase chain reaction *** results show that the 5 cp genomes are relatively conservative in size,gene content and arrangement,and border *** analysis showed that the species are closely related as well as to seven other species of the same *** addition,the 5 cp genomes contained few simple sequence repeats and relatively low nucleotide variability;thus,12 candidate polymorphic cp DNA markers will be helpful for further research on relevant population *** results will provide valuable genetic information for the conservation,evolution and ecology of these species and their relatives.

关键词： Larix species Plastid genome Microsatellite Phylogenetic analysis Qinghai-tibet plateau

Analysis of genetic diversity and prediction of Larix species distribution in the Qinghai–Tibet Plateau,China

在线全文

学校读者我要写书评

暂无评论

Journal of Forestry Research 2023年第3期34卷 705-715页

作者： Qiqiang Guo huie li Weilie Zheng Jinwen Pan Jie Lu Jiangrong li Yu Zheng Institute for Forest Resources&Environment of Guizhou Key Laboratory of Forest Cultivation in Plateau Mountain of Guizhou ProvinceGuizhou UniversityGuiyang 550025People’s Republic of China College of Forestry Guizhou UniversityGuiyang 550025People’s Republic of China College of Agriculture Guizhou UniversityGuiyang 550025People’s Republic of China Institute of Tibet Plateau Ecology Tibet Agriculture and Animal Husbandry UniversityNyingchi Tibet 860000People’s Republic of China Key Laboratory of Forest Ecology in Tibet Plateau(Tibet Agriculture and Animal Husbandry University) Ministry of EducationNyingchi Tibet 860000People’s Republic of China Plant Research Center Chengdu Botanical GardenChengdu 610083People’s Republic of China

Larix resources in the Qinghai-Tibet Plateau have important ecological and economic ***,the lack of genetic diversity background and related research hinders the development of conservation *** this study,genetic diversity and distribution of fi ve Larix species were *** 19 polymorphic microsatellite markers to study 272 representative individuals from 13 populations,the results show low genetic diversity at the population level,with variation explained mainly by diff erentiation among *** Larix populations were classifi ed into two clades,one formed by eight populations,including three of the species in this study,***,***,and *** *** other clade consists of fi ve populations,including the other two species in this study,*** thii and *** distance of the species was aff ected by geographical isolation and genetic diversity was mainly aff ected by *** area suitable for Larix *** during the Last Glacial Maximum compared to the current distribution according to the niche model,but should increase in future climate scenarios(2050s),expanding westward along the *** results provide an important scientifi c basis for the development of conservation strategies and further the sustainable utilization of Larix resources in the Qinghai-Tibet Plateau.

关键词： Larix spp. Genetic diversity Phylogenetic relationship Genetic structure Ecological niche modeling Qinghai-Tibet Plateau

在线全文

学校读者我要写书评

暂无评论

原始社会饮食之初级加工技术探析

安徽农业科学 2006年第6期34卷 1275-1276页

作者：李会娥内江师范学院四川内江641112

初级加工是指从粮食原料到食品原料的加工,从粮食加工工具创新、粮食加工技术及其流传、调味品及其加工三大部分论述了原始社会饮食的初级加工技术(过程)。在介绍加工工具之形状、功用、流传的同时,简析了其中凝结的科技原理和现实及历... 详细信息

初级加工是指从粮食原料到食品原料的加工,从粮食加工工具创新、粮食加工技术及其流传、调味品及其加工三大部分论述了原始社会饮食的初级加工技术(过程)。在介绍加工工具之形状、功用、流传的同时,简析了其中凝结的科技原理和现实及历史意义。这些文明中有的具有强大的生命力,穿越了人类历史,直至今天还发挥着作用；有的,为后代的发明、改造提供了智慧源泉和物质毛坯。

关键词：原始社会加工工具加工方法

在线全文

学校读者我要写书评

暂无评论

原始社会之饮食初探

安徽农业科学 2006年第5期34卷 1038-1039页

作者：李会娥内江师范学院四川内江641112

民以食为天,整个史前社会食物的获取一直是人类最主要的活动,在同大自然斗争的探索中不断开发食物资源并加工利用,从采集、渔猎的兴盛到种植业的发生,进而建立起以种植业为主、采集渔猎为附的社会经济体系,从而亦逐渐形成了以黍、粟为... 详细信息

民以食为天,整个史前社会食物的获取一直是人类最主要的活动,在同大自然斗争的探索中不断开发食物资源并加工利用,从采集、渔猎的兴盛到种植业的发生,进而建立起以种植业为主、采集渔猎为附的社会经济体系,从而亦逐渐形成了以黍、粟为主食原料,以采集渔猎所获作为附食原料的饮食结构。

关键词：原始社会饮食食物原料

在线全文

学校读者我要写书评

暂无评论

原始社会饮食之次级加工技术初探

安徽农业科学 2006年第7期34卷 1469-1470页

作者：李会娥内江师范学院音乐系四川内江641112

次级加工是指从食品原料到食品的加工,该加工过程又可分为2大类：与火有关的次级加工,即烹饪；与火无关的次级加工,即生物技术(主要表现为酿酒)。笔者从火的发明及意义、陶器出现前的烹饪技术、陶器的发明及意义、生物技术几大部分论述... 详细信息

次级加工是指从食品原料到食品的加工,该加工过程又可分为2大类：与火有关的次级加工,即烹饪；与火无关的次级加工,即生物技术(主要表现为酿酒)。笔者从火的发明及意义、陶器出现前的烹饪技术、陶器的发明及意义、生物技术几大部分论述了原始社会饮食之次级加工。

关键词：原始社会烹饪食器发酵

在线全文

学校读者我要写书评

暂无评论

青藏高原特有种砂生槐的核心种质构建

植物生理学报 2022年第6期58卷 1133-1144页

作者：杨兰李慧娥郭其强贵州大学农学院贵阳550025 贵州大学贵州省森林资源与环境研究中心贵阳550025

以300份砂生槐代表样本为研究对象,结合砂生槐形态特征、生物碱含量、抗旱等级与分子标记,对砂生槐资源进行核心种质构建。结果显示:用作分子标记的20对SSR引物多态百分率为89.33%,6个形态特征(冠幅、基径、分蘖数、株高、花序长、种子... 详细信息

以300份砂生槐代表样本为研究对象,结合砂生槐形态特征、生物碱含量、抗旱等级与分子标记,对砂生槐资源进行核心种质构建。结果显示:用作分子标记的20对SSR引物多态百分率为89.33%,6个形态特征(冠幅、基径、分蘖数、株高、花序长、种子数)和1种生物碱(苦参碱)含量的变异系数均在30%以上,但砂生槐资源的6个抗旱相关指标的变异系数低于10%。因此,将形态特征与生物碱含量进行10级分类,与SSR分型结果一起,采用位点优先取样策略构建核心种质,最终筛选出38份核心种质。进一步对所筛选出的核心种质相对于原始种质进行评价与确认,所构建的38份核心种质在形态特征、生物碱含量、抗旱性、地区分布及分子水平上均能够代表原始种质的遗传多样性。

关键词：砂生槐核心种质位点优先取样遗传多样性种质资源

在线全文

学校读者我要写书评

暂无评论

贵州威宁红花油茶的叶绿体基因组特征分析

园艺学报 2020年第4期47卷 779-787页

作者：李倩郭其强高超李慧娥贵州大学农学院园艺系贵阳550025 贵州大学贵州省森林资源与环境研究中心贵阳550025

对威宁红花油茶(Camellia weiningensis)的叶片高通量测序数据进行叶绿体全基因组的组装和注释分析。其叶绿体全基因组长为156490 bp,包含典型的四分体结构,序列已登录GenBank(MK820035)。叶绿体全基因组比较分析表明,与其他山茶属物种... 详细信息

对威宁红花油茶(Camellia weiningensis)的叶片高通量测序数据进行叶绿体全基因组的组装和注释分析。其叶绿体全基因组长为156490 bp,包含典型的四分体结构,序列已登录GenBank(MK820035)。叶绿体全基因组比较分析表明,与其他山茶属物种一样,其结构与基因排序均保守,但在基因组的反向重复区边界处表现出明显区别。简单重复序列(SSR)分析表明,全基因组仅包含51个单核苷酸重复的SSR,且仅为A/T重复类型。系统发育分析表明,威宁红花油茶与腾冲红花油茶亲缘关系最近,但其所处分支包含的4个山茶属物种的分组与传统分类不一致。

关键词：威宁红花油茶叶绿体基因组系统发育

在线全文

学校读者我要写书评

暂无评论

全业务运营下中高端客户关怀与维系

电信科学 2009年第11期25卷 28-31页

作者：全波李辉娥中国电信股份有限公司广东研究院广州510630

进入全业务运营时代,中高端客户争夺保有拉锯战愈演愈烈,中高端客户的保有与发展在当前尤显重要。本文针对中高端客户,按照全生命周期维系关怀的思路,通过生命周期各阶段策略以及贯穿于全生命周期的以利益增值、服务增值、形象增值三增... 详细信息

进入全业务运营时代,中高端客户争夺保有拉锯战愈演愈烈,中高端客户的保有与发展在当前尤显重要。本文针对中高端客户,按照全生命周期维系关怀的思路,通过生命周期各阶段策略以及贯穿于全生命周期的以利益增值、服务增值、形象增值三增要素设计的重点手段,对如何增强客户感知与黏性、减少流失、提高价值等热点问题进行探讨并给出建议。

关键词：中高端客户全生命周期客户服务客户关怀客户维系