Resistance to green leafhopper nephotettix virescens and. Resistance to nephotettix impicticeps and nilaparvata. Continuing to use this website means you agree to our use of cookies. Roles of insects for human free download as powerpoint presentation.
Genetic analysis of rice green leafhopper nephotettix nigropictus stal from samosir island indonesia using partial dna sequence of cytochrome oxidase sub unit i coi gene. We do not use these to store personal information about you. Karakter populasi wereng hijau, nephotettix virescens hemiptera. An ebook reader can be a software application for use on a computer such as microsofts free reader application, or a booksized computer that is used solely as a reading device such as nuvomedias rocket ebook. These pages form part of a scientific key which will assist a trained entomologist to identify the species accurately. Rice tungro spherical virus rtsv was suggested that this phenomenon might rrsv 8. Ento 331 crop pests and stored grain pests and their management lecture no. The brown planthopper, nilaparvata lugens, is the most serious pest of the rice plant in east and southeast asia, because of the severe damage it causes by sucking sap and transmission of viruses to the rice plant. Alternative names included nephotettix bipunctatus and a form of n. Resistance to nephotettix impicticeps and nilaparvata lugens in varieties of rice. Orosz department of zoology, hungarian natural history museum, h1088, budapest, baross u. Mass rearing technique for the rice green leafhopper nephotettix nigropictus stal. Bulletin of the kyushu agricultural experiment station, 24. Intensive host range studies comprising of 55 common weeds and eight cultivated plant species indicated thatnephotettix virescens could survive and breed o.
Coherent diffraction of single rice dwarf virus particles using hard xrays at the linac coherent light source. Biochemical aspect of varietal resistance to rice green. They are filterable through bacterial filters and require sterol for their growth. Biochemical analysis of 4 rice varieties and a weed showed that the total free amino acid content was greater in the susceptible variety tn 1 than in ptb 2, ptb 7 and ptb 18 which are resistant to both the species of green leafhoppers. This invention provides a compositions and methods of using biologically effective amount of a compound of formula 1, an noxide or an agriculturally suitable salt thereof wherein r1, r2, r3, r4a, r4b and r5 are as defined in the disclosure, to protect genetically modified plants and their environment. After manual adjustments, conserved regions of glycoside hydrolase. Studies on probing stimulants for the green rice leafhopper.
Population dynamics of three leafhopper vectors of rice tungro viruses, nephotettix virescens distant, n. Other readers will always be interested in your opinion of the books youve read. The planthopper transmits two kinds of viruses, rice ragged. Four gravid females of either bph or glh were released into each cage for 48 h to lay eggs. An nephotettix nigropictus in nahilalakip ha genus nga nephotettix, ngan familia nga cicadellidae. Transmission of rice gall dwarf virus by the green rice leafhopper. Nephotettix virescens was dominant in summer rice seed bed in both the year and transplanted monsoon rice field in the year 2005. Nephotettix virescens an overview sciencedirect topics. Pdf mass rearing technique for the rice green leafhopper. Rice diseases and pests, description, uses, propagation. Species are mostly found in asia, although two are from africa. Study on the nephotettix material deposited in the hungarian natural history museum hemiptera, auchenorrhyncha. Nephotettix nigropictus viruliferous for rice gall dwarf virus insect colonies viruliferous acquisition virus free sex female male nymph female male female male no. Nephotettix cincticeps an overview sciencedirect topics.
Files are available under licenses specified on their description page. Nephotettix nigropictus was present at all altitudinal levels on each sampling date. Population dynamics, forecasting and control of the green rice leafhopper, nephotettix cincticeps uhler. Green leafhoppers, the genus nephotettix matsumura cicadellidae. An immulon ii plate believed to be the causal virus of tungro have key importance for understanding dynatech was coated with igg at 1,4, 1, and was once called rice tungro virus tungro epidemiology. Bulletin of kyushu agricultural experimental station, 16. Pdf the abundance, incidence pattern and species composition of green. An nephotettix nigropictus in uska species han insecta.
Nephotettix cincticeps, a prevalent rice pest, injects gelling and. Biochemical analysis of 4 rice varieties and a weed showed that the total free amino acid content was greater in the susceptible variety tn 1 than in ptb2, ptb7 and ptb 18 which are resistant to both the species of green leafhoppers, however, the weed leersia hexantira the most suitable host of nephotettix niqropictus, had the lowest. Coherent diffraction of single rice dwarf virus particles. Population dynamics of three leafhopper vectors of rice tungro. Us 20140030243 a1 anthranilamides compositions the. This is to ensure that we give you the best experience possible.
Tungroinfected plants had a significantly higher free sugar content but soluble protein was significantly lower than in healthy plants. An effective amount of at least one additional biological agent can be combined with the. Both nymphs and adults suck the plant sap from the leaf and leaf sheath. It is also known to be associated with free radical scavenging activities and. Insects free fulltext preliminary investigation of. General information about nephotettix nigropictus nephni this website uses cookies our website uses cookies to ensure that we give you the best possible online experience. The population dynamics ofnephotettix virescens, a vector of rice tungro virus disease was investigated in a synchronized transplanting area at jatisari 19841986, west java and in a staggered transplanting area at sidan 19861988, bali, indonesia. Many of the insects depicted on these pages are outwardly similar and you should not use photographs as the sole means of identification. Population dynamics of the green leafhopper, nephotettix. Seasonal abundance and species composition of nephotettix. All structured data from the file and property namespaces is available under the creative commons cc0 license. Intensive host range studies comprising of 55 common weeds and eight cultivated plant species indicated thatnephotettix virescens could survive and breed. Cicadelloidea euscelidae based on the type material volume 60 issue 3 m.
Transgenic rice plants expressing snowdrop lectin galanthus nivalis agglutinin. The green rice leafhopper, nephotettix cincticeps hemiptera. Cookies on plantwise knowledge bank like most websites we use cookies. Rtsv on its own is transmitted by the rice green leafhopper nephotettix virescens but causes slight or. Rice is considered to be a semiaquatic annual grass and is commonly grown in paddies in wetlands or under shallow water. To investigate whether the ryd phytoplasma is a discrete, specieslevel taxon, several isolates of the aforementioned phytoplasmas were analysed using pcramplified 16s rdna. Study on the nephotettix material deposited in the. Phyto72n09 1246 american phytopathological society. The green rice leafhopper, nephotettix cincticeps, is a vascular bundle feeder. Whether youve loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them.
Several new methods of propagating rice have been developed which allow rice to be cultivated in less conventional areas e. Pdf abundance and species composition of rice green leafhopper. Known as green leafhoppers of paddyrice, nephotettix cincticeps and n. World distribution of nephotettix nigropictus nephni eppo global database. Download fulltext pdf mass rearing technique for the rice green leafhopper nephotettix nigropictus stal. Cicadellidae di wilayah endemi dan non endemi penyakit tungro padi the objectives of this research were to determine the species composition, distribution pattern and virus transmission properties of n. Survival was reduced by 29% and 53% p free online dictionary, but you are looking for one thats only in the merriamwebster unabridged dictionary.
Nymphs of nephotettix nigropictus were fed on diseased rice plants. Information about nephotettix virescens diagnosis, including distribution and treatment advice. Both hopper populations originated from wild individuals caught in the rice fields of the laguna province. Biosystematic study on the genus nephotettix occurring in asia. Karakter populasi wereng hijau, nephotettix virescens. In addition to rice yellow dwarf ryd phytoplasma, several phytoplasmas infect gramineous plants, including rice orange leaf, bermuda grass white leaf, brachiaria grass white leaf and sugarcane white leaf phytoplasmas. Gna were screened for resistance to green leafhopper nephotettix virescens. Rtd is caused by rice tungro bacilliform virus rtbv and rice tungro spherical virus rtsv. Proteome analysis of watery saliva secreted by green rice. The green rice leafhopper grlh, nephotettix nigropictus, is a serious rice. On the occurrence, morphology and biology of nephotettix. At low altitude nephotettix virescens was collected from both low and mid altitudinal levels on all sampling dates with.
Nephotettix virescens distant is the most efficient vector of tungro virus with transmission ability of 80% approximately17. We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Candidatus phytoplasma oryzae, a novel phytoplasma taxon. The farmcop suction sampler was employed for population censuses ofn. Nephotettix is a genus of planthoppers in the subfamily deltocephalinae and tribe chiasmini. This situation exists between two viruses where both are normally associated with a recognized disease in the field. Occurrence and spread of rice tungro spherical virus in. The green rice leafhopper grlh, nephotettix nigropictus, is a serious rice sucking pest and is widely distributed in south and southeast asia, japan, and taiwan. Furthermore, gelfree proteome analysis that was performed to cover the.
Comparative levels of resistance of rice cultivars and weeds against nephotettix nigropictus stal and nephotettix virescens distant. Studies on the life history and the population dynamics of the green rice leafhopper, nephotettix cincticeps uhler. Host specificity of rice green leafhoppers, nephotettix virescens. A reovirus in the brown planthopper, nilaparvata lugens. Nephotettix nigropictus nephniworld distribution eppo. The ultrashort and extremely bright pulses from xray free electron lasers. However, the weed leersia hexandra the most suitable host ofnephotettix nigropictus, had the lowest amount of free amino acids. Leafhoppers as vectors of plant mycoplasma diseases.
597 1305 331 760 306 116 1142 148 416 917 1290 395 1217 52 145 329 13 572 1436 1522 989 158 656 1365 1068 544 1306 170 811 1226 1199 100 261 1323 1279 1256 1407 140 1003 1240 1091