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Puslapis 1 nuo 555 rezultatus
Water potential gradients in field tobacco.
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A pressure chamber was used to establish the vertical gradients of leaf water potential (Psi(Leaf)) and stem water potential (Psi(Stem)) in field-grown tobacco (Nicotiana tabacum L. var. Havanna seed 211) at three different times of day. Leaves enclosed in polyethylene bags and aluminum foil the
Field performance of derived generations of transgenic tobacco.
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Two inbred cultivars of Nicotiana tabacum (tobacco), 'Samsun' and 'Xanthi', were transformed with the plasmid pBI 121 using Bin 19 in Agrobacterium tumefaciens. The plasmid carries the nptII gene conferring kanamycin resistance and the uidA gene encoding β-glucuronidase (GUS). Progeny carrying the
Potato virus yisolated from pepper fields in Tehran Province.
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Potato Virus Y was known as the main cause of yellowing and vein necrosis of pepper in Tehran Province, using Double Antibody Sandwich Elisa (DAS-ELISA). Biological properties including host range of the isolate was determined after biological purification. Host range studies showed that pepper
Molecular characterization and field survey of Iranian potato virus X isolates.
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Six hundred and one symptomatic potato samples were collected from nine provinces in Iran. Screening by double-antibody sandwich enzyme linked immunosorbent assay using a potato virus X (PVX) together with a few potyviruses polyclonal antibodies, produced positive reactions in 4.3 % of samples
Study on potato virus M (PVM) occurrence in potato fields in Iran.
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57 native potato tuber samples collected from different potato growing region of Iran, planted on single rows in Karaj College experimental station. Plant samples of each single row plus 9.25 Fresh foliage samples collected from fields under new introduced cultivars were tested for potato virus
Bacteriome and Mycobiome in Nicotiana tabacum Fields Affected by Black Shank Disease.
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Phytophthora nicotianae is a widespread cause of black shank disease of tobacco plants and causes substantial harvest losses in all major cultivation areas. The oomycete primarily affects plant roots and the stem, where it leads to a progressing decay of the diseased tissues. In this resource
Fusion characteristics of plant protoplasts in electric fields.
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The electrical parameters important in the fusion of plant protoplasts aligned dielectrophoretically in high-frequency alternating electric fields have been established. Protoplasts were aligned in an alternating electric field between two relatively distant (1 mm) electrodes, by dielectrophoresis
Relationship between Net CO(2) Assimilation and Dry Weight Accumulation in Field-Grown Tobacco.
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To assess the variability of net photosynthetic CO(2) exchange per unit leaf area and to construct budgets for stands of field-grown tobacco (Nicotiana tabacum, Connecticut Broadleaf), a number of short-time measurements were made on all available leaf positions on two varieties using a hand-held
Virus diseases in the tobacco fields of Guilan and Western Azerbaijan provinces of Iran.
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Tobacco (Nicotiana tabacum L.) is one of the important industrial plants in Iran. Viruses as an important group of plant pathogens cause many losses on the quality and quantity of tobacco crop. There was few information on the types of plant viruses infecting the tobacco fields of Guilan and almost
Population Structure, Mating Type, and Mefenoxam Sensitivity of Phytophthora nicotianae in Virginia Tobacco Fields.
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Black shank is an important disease of tobacco (Nicotiana tabacum) caused by the fungus-like organism, Phytophthora nicotianae. Three physiological races (0, 1, and 3) have been documented in the United States. Shifts in the pathogen population structure have become a concern due to the widespread
Natural Infection of Field-Grown Borage (Borago officinalis) by Alfalfa mosaic virus in Spain.
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Alfalfa mosaic virus (AMV) has a wide host range and is distributed throughout the world. It causes disease in several vegetable crops, including bean, celery, lettuce, pea, pepper, and tomato (1). In Spain, it has been found naturally infecting alfalfa, pepper, and tomato. During the autumn of
RNase protection analyses show high genetic diversity among field isolates of satellite tobacco mosaic virus.
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Fifteen field isolates of satellite tobacco mosaic virus (STMV) were collected from wild Nicotiana glauca plants within a 20-km2 area in southern California. Analyses of the entire length of the satellite genomic RNA of each isolate by RNase protection assays showed that there were 10 different
Real-Time Genetic Manipulations of the Cytokinin Pathway: A Tool for Laboratory and Field Studies.
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Although many established tools for cytokinin (CK) pathway manipulations are well suitable for the analysis of molecular interactions, their use on a whole plant scale is often limited by the induction of severe developmental defects. To circumvent this problem, different methods were developed that
Physiochemical Characterization and Field Assessment of Lettuce Chlorosis Virus.
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Lettuce chlorosis virus (LCV) was purified and partially characterized, and polyclonal antisera were produced and used to assess disease in the field. The antisera reliably detected LCV by indirect enzyme-linked immunosorbent assay (ELISA) in Nicotiana benthamiana. In Western blots, the LCV antisera
Genetic variability of East African cassava mosaic Cameroon virus under field and controlled environment conditions.
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Cassava geminiviruses occur in all cassava growing areas of Africa and are considered to be the most damaging vector-borne plant pathogens. At least seven species of these viruses have been identified. We investigated genetic variation in East African cassava mosaic cassava Cameroon virus (EACMCV)
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