共查询到20条相似文献,搜索用时 406 毫秒
1.
用扩增片段长度多成性(AFLP,amplified fragment length polymorphism)方法研究了荷木(Schima superba Gardn.et Champ.)和锥栗(Castanopsis chinensisHance.)在3个演替系列群落中的分子变化。研究地点位于广东省鼎湖山。3个群落是针叶林群落、针阔叶混交林群落和常绿阔叶林群落。荷木的AFLP分析结果表明,4组 相似文献
2.
1植物名称王瓜(Trichosanthescuc-umeroides),采自浙江天目山。2材料类别顶芽、带腋芽的茎段。3培养条件诱导分化培养基:(1)MS+6-BA0.5mg·L-1(单位下同);(2)MS+6-BA1;(3)MS+6.BA2+2,4-D1。诱导生根与生长培养基:(4)MS;(5)MS+IAA2;(6)MS+6-BA1+2,4-D1。每种培养基均附加3%蔗糖,0,7%琼脂,pH5.8。培养温度(25±1)℃,光照每天12h,光照度20001x左右。4生长与分化情况4.1无菌材料的… 相似文献
3.
鲁西北平原高产夏玉米生育模式董振国,鲁全国(中国科学院地理研究所,北京100101)DevelopmentMOdelofHighYieldingSummerCornonNortbwestSkandongPlain¥DongZhenguo;LuQuanguo(InstituteofGeography,ChineseAcademyofSciences,Beijing100101),ChineseJournalofE-colegy,1993,12(2):69-72.Erectandplanevarietiesofcornhavealeafinclinationof65°and50°andtheiroptimumplantingdensitiesare75000-82000and52500-60000stems·ha ̄(-1).Theleafareaindexatearsproutingstageandleafareaday(LAD)fortheformerarerespectively5.5-6.0and360-400,whilethoseforthelatterare3.5-4.0and260-300.TheL 相似文献
4.
最大概率原理在农田生态系统中的应用 总被引:6,自引:0,他引:6
最大概率原理在农田生态系统中的应用姚建民(山西省农科院农业资源综合考察研究所,太原030006)马蓉丽(山西省农科院蔬菜研究所,太原030006)ApplicationofMaximumProbabilityPrincipleinFarmlandEcosystem¥.YaoJianmin(InsliluteforCom-prehensiveSurveyofAgriculturalResources,ShanxiAcademyofAgriculturalSciences,Taiyuan030006),MaRongli(InslituteofVegetableResearcgh,ShanxiAcademyofagriculturalSciences,Taiyuan(030006).Chinese,JpurnalofEcology,1993,12(4):58-60.Inordertostrengthenthepracticabilityofmaximumprobabilityprinciple,thispapergivesoutsomees-sentialconditionsneededforapplyingth 相似文献
5.
沈阳市东陵区景观生态潜力研究 总被引:6,自引:1,他引:5
沈阳市东陵区景观生态潜力研究赵羿,吴彦明(中国科学院沈阳应用生态研究所,110015)邓百祥(辽宁省水利水电勘测设计研究院,沈阳110006)EcologicalPotentialofLaudscapeinDonglingDistrictofShenyang¥ZhaoYi;WuYanming(InstituteofAppliedEcology,AcademiaSinica,Shenyang110015),DengBaixiang(LiaoningAcademyofWaterCon-servancyandWaterPowerSureeyingandDesigning,Shenyang110006).ChineseJournalofEcology,1993,12(5):1-8。Ecologicalpotentialoflaudscapeconsistsofitsproductivepotential,ecologicalpotentialandpricelesspo-tential.Throughcalculatingdifferentproductivepotentials(photosyntheticpot 相似文献
6.
四种无尾两栖动物的核型和银染 总被引:4,自引:1,他引:4
本文报道了二种角蟾和二种树蛙的核型和银染NOR:无量出角蟾:2n=26(24+2SM),5+8,SC和Ag-NORs位于6q^per沙坪角蟾:2n=26(16M+8SM+2ST),5+8,SC位于1q^per,但Ag-NORs有二对,分别是lq^per和2q^per;黑蹼树蛙:2n=26(24M+2SM),5+8,SC和Ag-NORs在lp^inter;背条跳树蛙;2n=16(12M+4SM),S 相似文献
7.
云南血竭的化学成分及抗真菌活性 总被引:53,自引:0,他引:53
云南血竭为剑叶龙血树(Dracaena cochinchinensis(Lour.)S.c.Chen)树脂,从中分离到5个芳香族化合物:对羟基苯甲酸乙酰(1),7,4^′-二羟基黄烷(2),7-羟基-4^′-甲氧基黄烷(3),7,4^′-二羟基黄酮(4)和loureirin A(5)以及1个甾体皂甙(6),并对其中3个酚性成分进行了抗真菌活性检测。另外,用薄层层析法对云南血竭、广西血竭、海南血竭及 相似文献
8.
中国中亚热带地区引种玉米的气候生态适宜性分析翟玉顺,章熙谷(中国科学院南京土壤研究所生态室,210008)(南京农业大学农学系,210014)Eco-climaticSuitabilityofIntroducedCorninMidSub-tropicalRegionofCbina¥.ZhaiYushun(InstituteofSoilScience,AcademiaSinicaNanjing,210008),ZhangXigu(NanjingAgriculturalUniversity,Nan-jing,210014).ChineseJournalofEcology,1993.12(2):73-75.Throughanalyzingtheecologicalsuitabilityofintroducedcorntosunshine-temperature-precipitationanditsclimaticpotentialproductivityinmidsub-tropicalregionofChina,itisfoundthatAprilandthefirstandsecondten-daysofM 相似文献
9.
10.
太岳山丘陵地带中国林蛙成体的肥满度和某些器官系数的季节变化 总被引:8,自引:0,他引:8
太岳山丘陵地带中国林蛙成体的肥满度和某些器官系数的季节变化卢欣(山西省生物研究所,太原030006)SeasonalVariationsofAdult’sCorpulenceDegreeandOthcrOrgans’IndicesofCommonFrogsinTaiyucMountainIIillyLands¥.LuXin(ShanxiInstituteofBiology,Taiyuan030006).ChineseJournalofEcolo-gy,1993,12(4):33-35.InvestigationswerecarriedoutfrornFebruary1989toApril1990inTaiyuemountainofShanxiprovince.Theadult'scorpulencedegreeofcommonfrogsishigherduringhibernationaidlowestinMayandJune,andthatofmalesissignlficantlyhigherthanfemales’(exceptinAugust).DuringApril-August,thecoef- 相似文献
11.
南方丘陵山区农业生态环境的改善──以五华县新一村为例钟继洪,唐淑英,谭军(广东省土壤研究所,广州510650)ImprovemcntofAgro-ecologicalEnvironmentinHIillyandMountainousArcasofSouthChina:TakingXinyiVillageofWuhuaCountyasanExample¥.ZhongJihong,TangShuying,TanJun(GuangdongInsti-tuteofSoilScience,Guangzhou510650).ChineseJournalofEcology,1993,12(4):52-54.XinyivillagerepresentsatypicalhillyandmountainousareainGuangdongprovince.Asaresultofpro-longedextensiveexploitationofnaturalresources,itsagro-ecologicalenvironmentwasworsened.Throughharnessingthelandresourcesoft 相似文献
12.
青州南部山区冬季鸟类群落生态的初步研究 总被引:1,自引:0,他引:1
青州南部山区冬季鸟类群落生态的初步研究丛建国(山东潍坊教育学院生物系,青州262500)CommunityEcologyofWinterBirdsinSouthernMountoinousDistrictofQingzhou¥CongJoanguo(De-partmentofBiology,WeifangEducationalCollege,ShandongProvince,Qingzhou262500).ChineseJour-nalofEcoloLyy,1993,12(5):52-55。AsurveyonbirdcommunitiesinsouthernmountainousdistanceofQingZhou,ShandongProvince,iscouducted30speciesarefoundand4time;dominantspeciea,Thenumberofspeciesanddensityofbirdcommunityarevariedwithdifferenthabitats,UsingFuzzyanalysismethod,6bird.Communitiesareclassitied 相似文献
13.
植物化学生态研究促进生态农业建设 总被引:7,自引:0,他引:7
植物化学生态研究促进生态农业建设祝心如(中国科学院生态环境研究中心,北京100085)PhvtochemicalEcologlcalResearchandEco-AgriculturalConstruction¥.ZhuXinru(ResearchCenterforEco-enuivironmentalSciences.AcademiaSinica,Beijing100085).ChineseJournalofEcology,1993,12(4):36一40。Phytoallelopathyaffectsthefunctionanddynamicsofagro-system,andphytochemicalecologicalre-searchwillbenefittheconstructionofeco-agriculture,whichdisplaysinthefollowingmainaspects:weedcontrol,establishmentofreasonalcroppingsystem,implementationofcropgenicoptimization,re-ductionofap 相似文献
14.
宫粉郁金的组织培养和快速繁殖 总被引:8,自引:1,他引:7
1植物名称宫粉郁金(Curcuma kwangsiensis)。2材料类别 块茎萌动芽。3培养条件 萌动芽生长培养基:(1)MS+6-BA1mg·L-1(单位下同)+NAA0.2。不定芽增殖与愈伤组织诱导培养基:(2)MS+6-BA10+KT5;(3)MS+6.BA10;(4)MS+6-BA5+KT2.5;(5)MS+6-BA5;(6)MS+6-BA2+KT1。生根培养基:(7)MS+NAA0.5;(8)MS+6-BA0.5+NAA0.5;(9)MS。以上培养基均加0.7%琼脂,3%蔗糖,pH5… 相似文献
15.
用丙型肝炎病毒重组蛋白C33_c抗原免疫BALB/c小鼠,运用杂交瘤技术成功地建立了7株能稳定分泌抗C33_c单克隆抗体的杂交瘤细胞1H6D2、2G1A6、3A4A8、3E3E7、4G12C10、4A10C2、5F4B6.试验结果表明,7株McAbs具有良好的HCV特异性,间接ELISA法测得小鼠腹水McAb效价为1:10 ̄4-1:4×10 ̄4;竞争抑制实验和相加指数测定证实7株McAbs识别相关的抗原表位;7株McAbs中1株为IgM(5F4B6),其它6株为IgG(2a)。 相似文献
16.
从石竹科植物多荚草(Polycarpon prostratum(Forssk.)Aschers.et Schwein.ex Aschers)中分离得到3个新的柴胡皂甙类化合物:prostratoside A ̄C(1 ̄3)。它们的结构通过波谱方法分别鉴定为:3-O-{β-D-xylopyranosyl-(1→2)-β-D-glucopyranosyl-(1→4)-「β-D-glucopyranosy 相似文献
17.
桂西北早,中二叠世常么期和栖霞期Ting类动物群 总被引:3,自引:1,他引:2
桂西北早、中二叠世常么期和栖霞期Ting类十分丰富,自下而上可建立5带4亚带:1)Pamirina-Schwagerina带(Pamirina pulichrag亚带;Schwagerina cushmani亚带);2)Schwagerina guembeli带;3)Chalaroschwagerina-Robustoschwagerina带(Chalaroschwagerina vulgaris 相似文献
18.
19.
几种生态因子对双齿围沙蚕早期生活的影响 总被引:4,自引:0,他引:4
几种生态因子对双齿围沙蚕早期生活的影响石小平,赵清良(安徽师范大学,芜湖241000)(南京师范大学,210024)EffectsofseveralEcologicalFactorsonEarlyStage,survivalandGrowthofPerinereisAibuhitensis¥ShiXiaoping(AnhuiNormalUniversity,Wuhu241000),ZhaoQingliang(HanjingNormalUniversity,210024).(Chinese,JournalofEcology,1993,12(5):21-24。ThispaperdealswiththeeffectsofpH,salinity,densityandmediumontheearlystage-developmentandgrowthofPerinereisaibuhilnesis.TheresultsshowthattheoptimumpHforitshatchingis7.0-7.5,underwhich,suitableslinityisintherangeof15-40%,andThesuit 相似文献
20.
中国南方低丘红壤区人工复合生态系统模式建造研究 总被引:2,自引:0,他引:2
中国南方低丘红壤区人工复合生态系统模式建造研究徐盛荣,吴珊眉,李辉信(南京农业大学土壤农业化学系,210014)ModelingofArtificialComplexEcosysteminLow-hillyRedSoilRegionofSouthCbina¥.XuShengrong;WuShanmei;LiHuixin(DepartmentofSoilScienceandAgriculturalChemistry,NanjingAgriculturalUniversity).ChineseJournalofEcology,1993,12(2):39—40.Thispaperresearchesintothemodelingofartificialcomplexecosystemincorporatingcrop,fruit,forestandanimalhusbandrywithinacatchmentarea,whichisabasicunitoflowhillyregioninsouthChina.Themodelproducessignificantandcomprehensiveprofits.Fi 相似文献