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.H., Martinson, C.A., Russell, W.A. 1974. Seed transmission of maize dwarf mosaic virus and wheat streak mosaic virus in maize and response of inbred lines. Crop Sci. 14 :232–235. Russell W

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Kaiser, W. J. (1972): Seed transmission of bean yellow mosaic virus in broad beans in Iran. Phytopathology 62, 768. Seed transmission of bean yellow mosaic virus in broad beans in Iran

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. 99 117 128 Zink, F. W., Grogan, R. G. and Welch, J. E. (1956): The effect of parentage of seed transmission upon subsequent spread of lettuce mosaic

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The effect of Barley stripe mosaic virus (BSMV) infection was studied on the ultrastructure of etioplasts and the greening process of barley ( Hordeum vulgare cv. Pannónia) plants infected by seed transmission. The leaves of 7–11-day old etiolated seedlings were examined with transmission electron microscopy and absorption spectroscopy. The etioplasts of infected seedlings contained smaller prolamellar bodies with less regular membrane structure while prothylakoid content was higher than in the control. Characteristic effect was observed in the process of the Shibata-shift: 40 min delay was observed in the infected leaves. The results of this work proved that BSMV infection significantly delays or inhibits the plastid development and the formation of photosynthetic apparatus.

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67 68 70 Schilder, A. M. C. and Bergstrom, G. C. 1992. Infection of wheat seed and seed transmission of Pyrenophora tritici

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The complete genome of Hosta Virus X (HVX), which is thought to be a distinct species of Potexvirus, was sequenced. Nucleotide sequences of HVX were compared with those of other members of the genus Potexvirus and phylogenetic tree was constructed. The range of identities of viral replicase open reading frame 1 (ORF1) between HVX and other potexviruses were 43.1%–55.1% and 35.9%–46.6% at the nucleotide and amino acid levels, respectively. Phylogenetic analysis was performed according to the amino acid sequence of the replicase to determine the position of HVX in the genus Potexvirus. Results from the phylogenetic analysis demonstrated that HVX was in the same group as Cassava common mosaic virus (CsCMV), Plantago asiatica mosaic virus (PlAMV), Tulip virus X (TVX), and Hydrangea ring spot virus (HdRSV). In particular, coat protein (CP) sequences among viruses from different Hosta cultivars were revealed to be less variable than those from different isolates of Potato virus X (PVX), a Potexvirus type species. In the present study, HVX was transmissible by seeds of the Hosta “Blue Cadet” cultivar. Moreover, HVX was detected in the embryo but not in the seed coat or endosperm of the seed.

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Cereal Research Communications
Authors: András Takács, Gabriella Kazinczi, József Horváth, and Mária Hadzsi

transmission experiments of potato virus M and potato virus S in Lycopersicon species. Acta Agr. Acad. Sci. Hung. 22, 390–392. Horváth J. Seed transmission experiments of potato virus M

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383 389 Walter, M. H., Kaiser, W. J., Klein, R. F. and Wyatt, S. D. (1992): Association between tobacco streak ilar virus seed transmission and issue infection in bean

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infection and seed transmission on maize under field conditions . Agric. Biol. J. North Am. , 4 , 583 – 589 . doi 10.5251/abjna.2013.4.6.583.589 Bartlett , D. W. , Clough , J. M. , Godwin , J. R. , Hall , A. A. , Hamer , M. and Parr

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Acta Phytopathologica et Entomologica Hungarica
Authors: E. Kiss, G. Kazinczi, J. Horváth, S. Kobza, T. Baranyi, M. Varga, B. Havasréti, and A. Fehér

Gleason, M. L. and Provvidenti, R. (1990): Absence of seed transmission of zucchini yellow mosaic virus from seed of pumpkin. Plant Dis. 74, 828. Absence of seed transmission of zucchini yellow mosaic virus from seed of pumpkin

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