Split pdf pdf split into multiple files online free. Potensi cendawan entomopatogen verticillium lecanii dan. Help your pdf meet the size limit by breaking down large documents into smaller pieces to facilitate electronic distribution. Penang state is located at the northeastern coast of. Multifarious roles of feeding behaviours in rove beetle. Efficacy profile of pexalon insecticide on rice hoppers in comparison with selected insecticide standards with different mode of action groups. Rtbv is dependent on rtsv for its transmission by n. Comparison of dispersal ability between the green leafhoppers. Host specificity of rice green leafhoppers, nephotettix virescens. Bulletin of kyushu agricultural experimental station, 16. Life table analysis of the green rice leafhopper, nephotettix. The degree of predation of leafhopper by lycosa pseudoannulata and cyrtorhinus lividipennis was the same on all varieties, regardless of the level of varietal resistance to n.
Ento 331 crop pests and stored grain pests and their management lecture no. Entamoeba histolytica is a protozoan endoparasite inhabiting the mucosa and submucosa layers of the large intestine of human beings, causing dysentery and liver abscess. Current status of research on plant insect pests and. Our handy tool even allows you to automatically split individual pages of your document into separate files. Chinniah abstract experiments were carried out in field conditions to analyse the effect of induced resistance on certain major.
Nov 21, 2019 feeding behaviour of nephotettix virescens distant, a vector of tungro virus on rice varieties with different level of resistance. In this study, genetic mapping of the tungro spherical virus rtsv remstance gene was undertaken using the bulked segregant analysis bsa. Plant age and levels of resistance to green leafhopper. Behavior and biology of nephotettix virescens homoptera. Management of rice insect pests radcliffes ipm world textbook. Population dynamics of the green leafhopper, nephotettix virescens distant hemiptera. General information about nephotettix virescens nephim eppo global database. Distant, and some other leafhopper species in a semi persistent. Tujuan penelitian ini adalah mengetahui tingkat ketahanan lima kultivar padi beras merah terhadap serangan wereng hijau, mengetahui. Studies on the life history and the population dynamics of the green rice leafhopper, nephotettix cincticeps uhler. Intensive host range studies comprising of 55 common weeds and eight cultivated plant species indicated thatnephotettix virescens could survive and breed.
Insects and its allies or relatives whether pests or beneficials are part of rice ecosystems. Pdf diversity of insect pests in major rice growing. Nephotettix virescens was recognized as the vector for virus that caused tungro disease to rice plant. The survival rate of the 1st generation was lowest in the transition season when areal population density increased. Rtbv was transmitted by leafhoppers which had been given acquisition access to rtsv at the same time or before. Current breeding programmes include screening for resistance to n. Species account nephotettix virescens distant 1908g. Dispersal propensity of green leafhoppers was compared between a tropical species,nephotettix virescens, and a temperate species,n. Basic arthropod taxonomy arthropods include the insects, spiders, mites, ticks, ostracods, copepods, scorpions, centipedes, shrimps, and crayfishes. Insect pests were then collected using a mechanical insect aspirator and brought back to the laboratory. Study on bioefficacy of certain newer insecticides against yellow stem borer scirpophaga incertulas walker. Crop protection 1982 1 1, 9198 1982 butterworths plant age and levels of resistance to green leafhopper, nephotettix virescens distant, and tungro virus in rice varieties h. Penelitian telah dilaksanakan dari bulan februari sampai mei 20 di rumah kaca fakultas pertanian universitas andalas, padang.
Rtd is caused by rice tungro bacilliform virus rtbv and rice tungro spherical virus rtsv. Green leafhoppers nephotettix virescens distant and. Heinrichs department of entomology, international rice research institute, po box 933, manila, philippines abstract. Jul 12, 2017 fulltext downloads displays the total number of times this works files e. Population characteristics and tungro transmission by. Read this article to know about spotted jassid nephotettix virescens and life history, nature and distribution. During the study, nephotettix virescens distant, scripophaga incertulas walker, cnaphalocrosis medinalls guenee, cofana spectra distant nilaparvata lugens stal and leptocorisa oratouris fabricius were recorded. All structured data from the file and property namespaces is available under the creative commons cc0 license. Nephotettix virescens were transferred and maintained on tn1, ir26, ir36, ir64, or a mixture of the four cultivars plus ir54 and ir56 in equal proportion. Nephotettix virescens nephimoverview eppo global database. The pdf file you selected should load here if your web browser has a pdf reader plugin installed for example, a recent version of adobe acrobat reader if you would like more information about how to print, save, and work with pdfs, highwire press provides a helpful frequently asked questions about pdfs alternatively, you can download the pdf file directly to your computer, from where it. The species is a vector of rice yellow dwarf virus in japan and rice tungro disease in the philippines. Evaluating two mass screening methods for tungro disease. Cicadellidae with controlledrelease formulations of.
Of these, insects make up 50% of all the nominal species of organisms in the world. The phylogeny, evolution, and biogeography of the grasslandassociated leafhopper tribe chiasmini 21 genera, 316 species were investigated using phylogenetic analyses of two different data sets, one including 81 taxa and 3000 aligned nucleotide positions from the nadh dehydrogenase subunit 1 nd1, histone h3, 28s rdna d2, and cytochrome c oxidase subunit ii coii gene regions. These insects are severe pests in asia figure 8 where they not only cause direct damage, by removing plant sap, but are also vectors of serious rice virus diseases, such as rice tungro virus transmitted by the green leafhopper, nephotettix virescens, and grassy stunt virus transmitted by the brown planthopper, nilaparvata lugens. Serangga hama dan arthropoda predator yang terdapat pada padi. This study was aimed to determine the effectiveness of entomopathogenic fungi verticillium lecanii and beauveria bassiana to control n. Management of the rice tungro virus vector nephotettix virescens homoptera. Nephotettix virescens efficiently transmitted these three viruses in certain combinations from rice plants infected with both rtbv and rtsv or rwv and. The distribution of vectorborne nucleorhabdoviruses likely depends on the vector distribution. Diversity of insect pests in major rice growing areas of the world. A taxonomic revision of metarhizium based on a phylogenetic. Management of the rice tungro virus vector nephotettix virescens.
Tungroinfected plants had a significantly higher free sugar content but soluble protein was significantly lower than in healthy plants. Nephotettix virescens distant is the most efficient vector of tungro virus with transmission ability of 80% approximately17. Nephotettix virescens dimns is the major transmitter of the rice tungro virus disease. Revised list of natural enemies of the major rice insect pests in thailand defoliators trichogramma japonicum t richogrammatidae trichogramma spp. Conventional light trap is a trap with a light bulb generated using a portable generator and hang in front of large white sheeth. Cicadellidae in the philippines the flight potential of nephotettix virescens distant, the most important vector of. Green leaf hopper nephotettix virescens distant and rice gundhi bug leptocorisa acuta thunberg in rice field. The bsa in\olves comparing two pooled dna samples from a. Hal ini sesuai pendapat salim et al 2008 walang sangit adalah hama penyerang bulir padi, oleh sebab itulah hanya muncul pada fase generative padi. You can also split and merge files back together using out free online merge tool. Resistance to green leafhopper nephotettix virescens and brown planthopper nilaparvata lugens in transgenic rice expressing snowdrop lectin galanthus nivalis.
It is not a vector of rice stunt virus nielson 1968. The tungroassociated viruses are transmitted by the greenleafhopper, nephotettix virescens. Rice tungro disease is caused by an rna and a dna virus. The flight potential of nephotettix virescens distant, the most important vector of rice tungro virus disease, was assessed using tethered flight techniques. The adult density was highest either in the immigrant or the 1st generation and sharply decreased to the 2nd generation. Distant, and some other leafhopper species in a semipersistent. Molecular phylogeny and genetic analysis of green leafhopper nephotettix virescens distant using mitochondrial coi gene. Potensi hasil varietas padi tidak akan tercapai apabila tanaman tertular virus tungro, bahkan tidak akan diperoleh hasil apabila infeksi virus tungro terjadi sejak awal vegetatif atau tahap persemaian hasanuddin 2002. Files are available under licenses specified on their description page. Ratings based on a composite of data across species from multiple dupont field trials.
Nephotettix virescens, cofana spectra dan leptocorisa acuta. Current status of research on plant insect pests and biological control sunil aryal, ph. Cicadellidae in synchronized and staggered transplanting areas of paddy fileds in indonesia. Population dynamics of three leafhopper vectors of rice tungro viruses, nephotettix virescens distant, n. Population dynamics, forecasting and control of the green rice leafhopper, nephotettix cincticeps uhler. Pada pengamatan 1 mst sampai 8 mst dengan pengamatan jaring dan visual belum ditemukan hama walang sangit. Request pdf tethered flight activity of nephotettix virescens hemiptera. Inoue 1986 tested nymphal survival on 15 grass species genera and no adults emerged except from those nymphs reared on rice. Diversity and epidemiology of plant rhabdoviruses sciencedirect. The count includes downloads for all files if a work has more than one. Lantinga1 1biological farming systems group, wageningen centre for agroecology and systems analysis wacasa, wageningen university, p. Pdf feeding behavior of nephotettix virescens homoptera. Phylogeny, evolution, and historical biogeography of the. Cicadellidae, in farmers fields in the philippines.
Red denotes added by jcatindig purple denotes added by jacheng has also added names in chinese of parasitoids and places but i could not reliably cut and paste them into this. Tethered flight activity of nephotettix virescens hemiptera. Web enabled weather base prediction for insect pests of rice. Pdf web enabled weather based prediction for insect pests.
Complex agroecosystems for food security in a changing climate. Both viruses are transmitted together by leafhoppers to cause the. When the tn1maintained colony was tested at the third generation, its feeding behaviour and tungro transmission rates on test cultivars were similar to those of the original population but amounts of basic honeydew excretion and the transmission rate on the resistant test cultivars were greatly reduced at the seventh or later generations. Review of the grassland leafhopper genus nephotettix matsumura hemiptera. On the basis of seedbox screening, survival and oviposition, and feeding and population growth tests, ir29 and ir56 were resistant, ir8, ir36 and ir42 moderately resistant, and ir22, ir46, utri rajapan and tn1 susceptible. Complex agroecosystems for food security in a changing climate uma khumairoh 1,2, jeroen c. Karakter populasi wereng hijau, nephotettix virescens. Population dynamics ofnephotettix virescens was studied in 17 paddy fields transplanted at intervals of about 1 month in 19881990. General characteristics of bacteria and examples of phytopathogenic bacteria, fastidious vesicular bacteria, phytoplasmas and spiroplasmas phytoplasma phytoplasmas are small, unicellular, grampositive nonmotile bacteria like prokaryotes.
Peranan bioteknologi dalam pengelolaan penyakit tungro. Red denotes added by jcatindig purple denotes added by. Organic source induced silica on leaf folder, stem borer and gall midge population and rice yield p. Due to the short rice season, they must remigrate each season from nearby wetland sites.
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