Short communication UDC 578.8:633.41(497.5) FIRST REPORT OF BEET MOSAIC POTYVIRUS ON SUGAR BEET IN CROATIA
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چکیده
Introduction Species of the genus Beta are recognized as sources of various viruses. A con siderable number o f viruses have been isolated from the species Beta vulgaris var. saccharifera (sugar beet) (Sutic et al. 1999). One of the viruses occurring in this plant all over the world is beet mosaic potyvirus (BtMV). This virus belongs to Potyviridae, a taxonomic family of easily aphid-transmitted, filament-shaped and single-stranded RNA viruses (R ussell 1971). BtMV produces x-bodies in the cytoplasm and crystalline inclusions in the chloroplasts. Also, this virus pro duces submicroscopic cylindrical inclusions containing laminated aggregates (Edwardson and Christie 1991). BtMV causes a mosaic disease in sugar beet, red beet, spinach beet and spinach. Usually, this potyvirus occurs in the form of mild strains that do not cause significant economic damage in sugar beet or spinach. However, severe strains of BtMV that cause significant yield losses of sugar beet have been found as well (S hukla et al. 1994).
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Short Communication: The availability of sugar beet molasses as a substitutive medium for cultivation of Nannochloropsis sp. Hibberd, 1981 (Eustigmatophyta)
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Short Communication: The availability of sugar beet molasses as a substitutive medium for cultivation of Nannochloropsis sp. Hibberd, 1981 (Eustigmatophyta)
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