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Fruit yield and bacterial wilt symptoms on eggplant genotypes grown in soil infested with Ralstonia solanacearum

Fruit yield and bacterial wilt symptoms of eggplant genotypes CNPH006, CNPH171, CNPH658, CNPH778, CNPH783, and CNPH785 were quantified in soil naturally infested with Ralstonia solanacearum(race 1, biovar 3) in Brasília, Brazil.Exceptfor CNPH778, all genotypes developed at least one typical wiltedpl...

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Published in:Horticultura brasileira 2014-12, Vol.32 (4), p.453-457
Main Authors: Oliveira, Ivani T, Lopes, Carlos A, Moura, Andrea B
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description Fruit yield and bacterial wilt symptoms of eggplant genotypes CNPH006, CNPH171, CNPH658, CNPH778, CNPH783, and CNPH785 were quantified in soil naturally infested with Ralstonia solanacearum(race 1, biovar 3) in Brasília, Brazil.Exceptfor CNPH778, all genotypes developed at least one typical wiltedplant. Besides wilt,other symptoms considered for assessing levels of tolerance/resistance among genotypes wereplant death (CNPH006, CNPH171, CNPH658 and CNPH783), leaf chlorosis(CNPH785) and plant dwarfing (all genotypes). The occurrence of bacterial ooze on cut stems was observed in all plants grown in infested beds, including those that did not exhibit wilt symptoms. Plants grown simultaneouslyin noninfested beds of the same dimensions and soil characteristics allowed the comparison ofyield losses due to the pathogen. The genotypes were grouped according to their ability to maintain fruit production in the infested area. CNPH785 was the most tolerant genotype, with no significant loss due to the disease,followed by CNPH783, CNPH778 and CNPH171, with mean losses of 19.3%, 11.4%, and 10.1%, respectively. The genotypes CNPH658 and CNPH006 were the most susceptible, with average losses of 99.53 and 99.32%, respectively. A produção de frutos e sintomas de murcha-bacteriana foram quantificados nos genótipos de berinjela CNPH006, CNPH171, CNPH658, CNPH778, CNPH783 e CNPH785 cultivados em solo naturalmente infestado comRalstonia solanacearum, raça 1, biovar 3 em Brasília-DF. Com exceção do genótipo CNPH778, todos os genótipos apresentaram pelo menos uma planta com murcha, sintoma típico da doença.Entretanto, para diferenciar níveis de resistência/tolerância entre os genótipos, foram considerados, além da murcha, os sintomas: seca e morte de plantas (CNPH006, CNPH171, CNPH658 e CNPH783), amarelecimento de folhas (CNPH785) e menor crescimento de plantas (todos os genótipos). A ocorrência de fluxo bacteriano foi constatada em todas as plantas cultivadas nos canteiros infestados, inclusive naquelas que não apresentaram sintomas de murcha. Plantas cultivadas simultaneamente em canteiros não infestados, com as mesmas dimensões e características, permitiram obtenção de dados de produção em áreas infestadas e não infestadas. Os genótipos foram agrupados quanto à sua capacidade de manter a produção de frutos na área infestada.Quando comparados à média obtida na área livre do patógeno, CNPH785 foi o mais tolerante, não apresentando perda na produção, seguido dos genótipos CNPH78
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Besides wilt,other symptoms considered for assessing levels of tolerance/resistance among genotypes wereplant death (CNPH006, CNPH171, CNPH658 and CNPH783), leaf chlorosis(CNPH785) and plant dwarfing (all genotypes). The occurrence of bacterial ooze on cut stems was observed in all plants grown in infested beds, including those that did not exhibit wilt symptoms. Plants grown simultaneouslyin noninfested beds of the same dimensions and soil characteristics allowed the comparison ofyield losses due to the pathogen. The genotypes were grouped according to their ability to maintain fruit production in the infested area. CNPH785 was the most tolerant genotype, with no significant loss due to the disease,followed by CNPH783, CNPH778 and CNPH171, with mean losses of 19.3%, 11.4%, and 10.1%, respectively. The genotypes CNPH658 and CNPH006 were the most susceptible, with average losses of 99.53 and 99.32%, respectively. A produção de frutos e sintomas de murcha-bacteriana foram quantificados nos genótipos de berinjela CNPH006, CNPH171, CNPH658, CNPH778, CNPH783 e CNPH785 cultivados em solo naturalmente infestado comRalstonia solanacearum, raça 1, biovar 3 em Brasília-DF. Com exceção do genótipo CNPH778, todos os genótipos apresentaram pelo menos uma planta com murcha, sintoma típico da doença.Entretanto, para diferenciar níveis de resistência/tolerância entre os genótipos, foram considerados, além da murcha, os sintomas: seca e morte de plantas (CNPH006, CNPH171, CNPH658 e CNPH783), amarelecimento de folhas (CNPH785) e menor crescimento de plantas (todos os genótipos). A ocorrência de fluxo bacteriano foi constatada em todas as plantas cultivadas nos canteiros infestados, inclusive naquelas que não apresentaram sintomas de murcha. Plantas cultivadas simultaneamente em canteiros não infestados, com as mesmas dimensões e características, permitiram obtenção de dados de produção em áreas infestadas e não infestadas. Os genótipos foram agrupados quanto à sua capacidade de manter a produção de frutos na área infestada.Quando comparados à média obtida na área livre do patógeno, CNPH785 foi o mais tolerante, não apresentando perda na produção, seguido dos genótipos CNPH783, CNPH778 e CNPH171, com perdas médias de 19,3; 11,4 e 10,1%, respectivamente. 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Besides wilt,other symptoms considered for assessing levels of tolerance/resistance among genotypes wereplant death (CNPH006, CNPH171, CNPH658 and CNPH783), leaf chlorosis(CNPH785) and plant dwarfing (all genotypes). The occurrence of bacterial ooze on cut stems was observed in all plants grown in infested beds, including those that did not exhibit wilt symptoms. Plants grown simultaneouslyin noninfested beds of the same dimensions and soil characteristics allowed the comparison ofyield losses due to the pathogen. The genotypes were grouped according to their ability to maintain fruit production in the infested area. CNPH785 was the most tolerant genotype, with no significant loss due to the disease,followed by CNPH783, CNPH778 and CNPH171, with mean losses of 19.3%, 11.4%, and 10.1%, respectively. The genotypes CNPH658 and CNPH006 were the most susceptible, with average losses of 99.53 and 99.32%, respectively. A produção de frutos e sintomas de murcha-bacteriana foram quantificados nos genótipos de berinjela CNPH006, CNPH171, CNPH658, CNPH778, CNPH783 e CNPH785 cultivados em solo naturalmente infestado comRalstonia solanacearum, raça 1, biovar 3 em Brasília-DF. Com exceção do genótipo CNPH778, todos os genótipos apresentaram pelo menos uma planta com murcha, sintoma típico da doença.Entretanto, para diferenciar níveis de resistência/tolerância entre os genótipos, foram considerados, além da murcha, os sintomas: seca e morte de plantas (CNPH006, CNPH171, CNPH658 e CNPH783), amarelecimento de folhas (CNPH785) e menor crescimento de plantas (todos os genótipos). A ocorrência de fluxo bacteriano foi constatada em todas as plantas cultivadas nos canteiros infestados, inclusive naquelas que não apresentaram sintomas de murcha. Plantas cultivadas simultaneamente em canteiros não infestados, com as mesmas dimensões e características, permitiram obtenção de dados de produção em áreas infestadas e não infestadas. Os genótipos foram agrupados quanto à sua capacidade de manter a produção de frutos na área infestada.Quando comparados à média obtida na área livre do patógeno, CNPH785 foi o mais tolerante, não apresentando perda na produção, seguido dos genótipos CNPH783, CNPH778 e CNPH171, com perdas médias de 19,3; 11,4 e 10,1%, respectivamente. 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Besides wilt,other symptoms considered for assessing levels of tolerance/resistance among genotypes wereplant death (CNPH006, CNPH171, CNPH658 and CNPH783), leaf chlorosis(CNPH785) and plant dwarfing (all genotypes). The occurrence of bacterial ooze on cut stems was observed in all plants grown in infested beds, including those that did not exhibit wilt symptoms. Plants grown simultaneouslyin noninfested beds of the same dimensions and soil characteristics allowed the comparison ofyield losses due to the pathogen. The genotypes were grouped according to their ability to maintain fruit production in the infested area. CNPH785 was the most tolerant genotype, with no significant loss due to the disease,followed by CNPH783, CNPH778 and CNPH171, with mean losses of 19.3%, 11.4%, and 10.1%, respectively. The genotypes CNPH658 and CNPH006 were the most susceptible, with average losses of 99.53 and 99.32%, respectively. A produção de frutos e sintomas de murcha-bacteriana foram quantificados nos genótipos de berinjela CNPH006, CNPH171, CNPH658, CNPH778, CNPH783 e CNPH785 cultivados em solo naturalmente infestado comRalstonia solanacearum, raça 1, biovar 3 em Brasília-DF. Com exceção do genótipo CNPH778, todos os genótipos apresentaram pelo menos uma planta com murcha, sintoma típico da doença.Entretanto, para diferenciar níveis de resistência/tolerância entre os genótipos, foram considerados, além da murcha, os sintomas: seca e morte de plantas (CNPH006, CNPH171, CNPH658 e CNPH783), amarelecimento de folhas (CNPH785) e menor crescimento de plantas (todos os genótipos). A ocorrência de fluxo bacteriano foi constatada em todas as plantas cultivadas nos canteiros infestados, inclusive naquelas que não apresentaram sintomas de murcha. Plantas cultivadas simultaneamente em canteiros não infestados, com as mesmas dimensões e características, permitiram obtenção de dados de produção em áreas infestadas e não infestadas. Os genótipos foram agrupados quanto à sua capacidade de manter a produção de frutos na área infestada.Quando comparados à média obtida na área livre do patógeno, CNPH785 foi o mais tolerante, não apresentando perda na produção, seguido dos genótipos CNPH783, CNPH778 e CNPH171, com perdas médias de 19,3; 11,4 e 10,1%, respectivamente. Os genótipos CNPH658 e CNPH006 foram os mais suscetíveis, com perdas médias de 99,53 e 99,32%, respectivamente.</abstract><doi>10.1590/S0102-053620140000400013</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record>
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title Fruit yield and bacterial wilt symptoms on eggplant genotypes grown in soil infested with Ralstonia solanacearum
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