搜索结果: 136-150 共查到“知识库 植物病毒学”相关记录652条 . 查询时间(0.875 秒)
中国苹果病害发生与分布现状调查
苹果病害 发生分布 调查
2017/11/9
本研究于2010－2012年在我国18个省(市、自治区)的1 100个苹果园采用隔行踏查法进行了实地调查。调查内容包括果园面积、品种名称、树龄结构以及各种病害发生情况。调查结果表明, 3年间在我国苹果主产区共发现病害50种, 其中包括新发现的2种病害:丝核菌叶枯病和炭疽菌叶枯病。通过分析确定了各种病害的严重度, 明确了腐烂病、轮纹病、褐斑病和斑点落叶病4种主要病害及苹果锈病等8种中度发生病害的发生...
番茄黄化曲叶病毒的鉴定与群体进化分析
双生病毒鉴定 基因组变异 系统发育
2017/11/8
番茄黄化曲叶病(tomato yellow leaf curl disease, TYLCD)是番茄上的重要病害, 可由多种双生病毒引起。为了明确北京地区番茄黄化曲叶病的病毒种类和病毒基因组变异情况, 本研究收集了51个采自北京不同区县的病毒疑似样品, 进行了双生病毒的检测及分离物的基因组分析。经双生病毒简并引物检测25个样品呈阳性; 扩增获得10个代表性分离物的全基因组, 大小均为2 781 b...
Reaction of Selected Apple Cultivars to Wilt Pathogen Verticillium dahliae
control Malus domestica disease assessment
2015/3/9
The reaction of five apple cultivars to olive wilt caused by Verticillium dahliae Kleb was evaluated. Five apple
cultivars (Royal Gala, Delicious Anabri, Double Red, Golden Delicious, Granny Smith) ...
Effect of MON 810 Cultivation and Prevention to Adventitious Presence in Non-GM Fields: A Case Study in Slovakia
GM crop maize MON 810 coexistence
2015/3/9
The efficiency of border rows to prevent the adventitious presence of GM maize in non-GM maize plots was
evaluated as well as the effect of the MON 810 maize of the yield and self-protection against...
Insecticidal Activity of Chitosans of Different Molecular Weights and Chitosan-metal Complexes against Cotton Leafworm Spodoptera littoralis and Oleander Aphid Aphis nerii
arthropod pests larval mortality biopolymer
2015/3/9
As an alternative to synthetic pesticides, chitosan has received much attention as a biopolymer active against
some agricultural pests. The, insecticidal activity of chitosans of four molecular weig...
Tolerance of Blackgrass (Alopecurus myosuroides) to Sulfonylurea Herbicides in the Czech Republic
Alopecurus myosuroides ALS
2015/3/6
Seeds of three blackgrass populations from Southern Bohemia were collected in 2007–2008. Biological tests with
chlorsulfuron were performed at the 2–3 leaf stage. Some plants survived after treatmen...
Transmission of Chickpea chlorotic dwarf virus in Chickpea by the Leafhopper Orosius albicinctus (Distant) in Pakistan – Short Communication
chickpea CpCDV leafhopper
2015/3/6
Chickpea chlorotic dwarf virus (CpCDV, genus Mastervirus, family Geminiviridae) is the most common viral
disease of chickpea in Pakistan. Two aphid [Aphis craccivora Koch, Myzus persicae (Sulzer)], ...
Stem decay by Stereum sanguinolentum after red deer damage n the Českomoravská vrchovina Highlands
Picea abies wound rot stem decay
2015/3/5
Damage caused by bark peeling and browsing by red deer to Picea abies was investigated in two localities in the Českomoravská vrchovina Highlands. 127 experimental plots of 50 × 50 m in size were...
采用高效液相色谱技术研究了苦皮藤素Ⅴ在粘虫Mythimna separata和小地老虎Agrotis ypsilon幼虫中的穿透及代谢。结果表明:苦皮藤素V均不能从粘虫和小地老虎幼虫的体壁穿透到血腔或从血腔穿透到中肠,但很容易从中肠穿透到血腔,且穿透速率无差异;苦皮藤素V在小地老虎幼虫体内的代谢解毒速率远大于其在粘虫幼虫体内的代谢速率,其半衰期分别为5.5和13.1 h。本研究结果表明,苦皮藤素V...
Detection of Cherry leaf roll virus and Strawberry latent ring spot virus by one-step RT-PCR
CLRV SLRSV RT-PCR Xiphinema diversicaudatum
2015/3/3
one-step reverse transcription-polymerase chain reaction (RT-PCR) protocol was developed and used for the detection of Cherry leaf roll virus (CLRV) and Strawberry latent ring spot virus (SLRSV). The ...
Feeding preferences of Phyllotreta herbivores to winter rape and chosen weeds
feeding preference crop weeds Brassicaceae herbivory Phyllotreta spp. model experiments
2015/3/3
In model experiments with leaf disks from Brassica napus L. subsp. napus and Thlaspi arvense L. and Sinapis arvensis L. in spring periods (May–June) of 2006–2007 feeding preferences of Phyllotreta her...
Distribution of Plum pox virus strains in natural sources in the Czech Republic
Plum pox virus blackthorn myrobalan plum sweet cherry sour cherry apricot PPV-D PPV-M PPV-Rec PPV-C PPV-EA
2015/3/3
The distribution of Plum pox virus (PPV) strains, PPV-D, PPV-M and PPV-Rec, was investigated in the Czech Republic in 2005–2008. Fifty-two to ninety-four samples of flowers or leaves of plum, myrobala...
The viral etiology of tomato yellow leaf curl disease – a review
TYLCV tomato geminivirus ssDNA whitefly PTGS
2015/3/3
Tomato yellow leaf curl disease (TYLCD) is one of the most devastating plant diseases in the world. As a result of its continuing rapid spread, it now afflicts more than 30 tomato growing countries in...
Pathogenicity of three commercial products of entomopathogenic fungi, Beauveria bassiana, Metarhizum anisopilae and Lecanicillium lecanii against adults of olive fly, Bactrocera oleae (Gmelin) (Diptera: Tephritidae) in the laboratory
Bactrocera oleae Beauveria bassiana Metarhizum anisopilae Lecanicillium lecanii pathogenicity
2015/3/3
The pathogenicity of entomopathogenic fungi, Beauveria bassiana, Metarhizum anisopilae and Lecanicillium lecanii, was evaluated against adults of the olive fly Bactrocera oleae (Gmelin) under laborato...
Insect damage to and mortality of seedlings of Chenopodium album L. and Fallopia convolvulus (L.) A Love
pigweed Chenopodium album L. wild buckwheat Fallopia convolvulus (L.) á. Lö ve flea beetle Phyllotreta spp. herbivory phytophagous insect secondary succession fallow
2015/3/3
During 1997–1999, the damage and mortality caused by insect herbivores to pigweed (Chenopodium album) and wild buckwheat (Fallopia convolvulus) were studied in an early fallow field at Prague-Ruzyně. ...