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      BRS Clara: cultivar de batata para mercado fresco, com resistência à requeima Translated title: 'BRS Clara': a late-blight-resistant fresh market potato cultivar

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          Abstract

          'BRS Clara' é uma nova cultivar de batata para comercialização na forma fresca, liberada em 2010. Foi desenvolvida pelo Programa de Melhoramento de Batata da Embrapa, selecionada para aparência e rendimento de tubérculos, e resistência foliar à requeima, causada por Phytophthora infestans. Os tubérculos têm película amarela lisa, polpa creme, formato oval-alongado e olhos rasos. Seu potencial produtivo é alto. Na região Sul do Brasil, 'BRS Clara' apresentou rendimento de tubérculos mais elevado ou semelhante à cultivar Agata e não diferiu da 'Asterix'. No outono, apresentou rendimento total e comercial de tubérculos maiores que 'Agata', sendo que a superioridade foi relacionada à resistência à requeima da 'BRS Clara'. Na primavera, não diferiu da 'Agata' e 'Asterix'. O peso específico da 'BRS Clara' foi mais alto que da 'Agata' e mais baixo que da 'Asterix'. 'BRS Clara' mostrou baixa incidência de defeitos fisiológicos. Quanto à aptidão aos principais usos culinários, classificou-se como regularmente boa a boa para salada, ligeiramente boa para assar, e variou de ruim a boa para fritar na forma de palitos. A resistência ao esverdeamento dos tubérculos foi moderada. Apresentou moderada a alta resistência à requeima. Observações de campo indicam que 'BRS Clara' tem resistência moderada à pinta-preta e suscetibilidade ao mosaico (PVY) e ao enrolamento da folha (PLRV).

          Translated abstract

          'BRS Clara' is a new potato cultivar for the fresh market, released in 2010. It was developed by the Potato Breeding Program of Embrapa, selected for tuber appearance and yield, and foliar resistance to late blight caused by Phytophthora infestans. The tubers have yellow and smooth skin, cream colored flesh, elongated-oval shape and shallow eyes. It has high yield potential. In the South region of Brazil, 'BRS Clara' yielded higher or not different from Agata cultivar, and did not differ from 'Asterix'. In the autumn season, it yielded higher than 'Agata' for total and marketable tubers. This superiority was related to late blight resistance of 'BRS Clara'. In the spring season, it did not differ from 'Agata' and 'Asterix'. The specific gravity of 'BRS Clara' was higher than of 'Agata', and lower than of 'Asterix'. 'BRS Clara' had low incidence of physiological defects. In relation to the main culinary uses, it was rated as regularly good to good for salad, lightly good for baking, and varied from poor to good for French fries. The resistance to greening was moderate. It showed moderate to high resistance to late blight. Field observations indicate that 'BRS Clara' has moderate resistance to early blight, and susceptibility to mosaic (PVY) and leafroll (PLRV).

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          Characteristics of the microplate method of enzyme-linked immunosorbent assay for the detection of plant viruses.

          Some characteristics of a microplate method for the detection and assay of plant viruses using enzyme-labelled antibodies are described. The method enabled the highly sensitive detection of a number of morphologically different viruses in purified preparations and in unclarified extracts of herbaceous hosts and of infected crop plants. Virus concentrations were estimated by photometric measurement of the colour intensity of the hydrolysed substrate. The suitability of the tehcnique for various field and research applications is considered.
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            Robust and highly informative microsatellite-based genetic identity kit for potato

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              O cultivo da batata na região sul do Brasil

                Author and article information

                Journal
                hb
                Horticultura Brasileira
                Hortic. Bras.
                Associação Brasileira de Horticultura (Brasília, DF, Brazil )
                0102-0536
                1806-9991
                December 2013
                : 31
                : 4
                : 664-668
                Affiliations
                [01] Pelotas RS orgnameEmbrapa Clima Temperado arione.pereira@ 123456embrapa.br
                [02] Canoinhas SC orgnameEmbrapa Produtos e Mercado-Escritório de Canoinhas
                [03] Brasília DF orgnameEmbrapa Hortaliças
                [04] Pelotas RS orgnameUFPel orgdiv1FCD orgdiv2Depto. Ciência dos Alimentos
                [05] Curitiba PR orgnameIAPAR
                Article
                S0102-05362013000400026 S0102-0536(13)03100400026
                f68f555d-e350-45d1-8807-90c6dd00be4b

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 30 July 2013
                : 07 October 2013
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 8, Pages: 5
                Product

                SciELO Brazil

                Categories
                Página do Horticultor

                Solanum tuberosum,Phytophthora infestans,melhoramento genético,cultivar,breeding

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