TY - JOUR AU - Souza, Gabriel Elias de AU - Steiner, Fábio AU - Zoz, Tiago AU - Oliveira, Silvia Sanielle Costa de AU - Cruz, Sihélio Júlio Silva PY - 2015/07/01 Y2 - 2024/03/28 TI - COMPARAÇÃO ENTRE MÉTODOS PARA A AVALIAÇÃO DO VIGOR DE SEMENTES DE ALGODÃO JF - REVISTA DE AGRICULTURA NEOTROPICAL JA - Rev. Agric. Neotrop. 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style="font-family: 'Times New Roman','serif'; color: black; font-weight: normal; mso-bidi-font-weight: bold;">Em um programa de controle de qualidade, a avaliação do vigor de sementes é fundamental e necessária para o sucesso da produção. Métodos que possibilitam a rápida avaliação do vigor das sementes são de grande interesse no controle de qualidade das empresas produtoras. O objetivo foi avaliar a eficiência de diferentes testes de vigor na avaliação da qualidade fisiológica de sementes de algodão (<span class="st1"><em style="mso-bidi-font-style: normal;">Gossypium hirsutum</em> L., cv. </span></span><span class="st1"><span style="font-family: 'Times New Roman','serif'; color: black; mso-ansi-language: PT; font-weight: normal; mso-bidi-font-weight: bold;" lang="PT">FM 951LL</span></span><span style="font-family: 'Times New Roman','serif'; color: black; font-weight: normal; mso-bidi-font-weight: bold;">), buscando a diferenciação de lotes. O estudo foi realizado no Laboratório de Análises de Sementes da Universidade Estadual Paulista – FCA/UNESP, Botucatu–SP, em dezembro de 2011. O delineamento experimental utilizado foi o inteiramente ao acaso com cinco tratamentos e quatro repetições. Cinco lotes de sementes da Cultivar FM 951LL foram submetidos ao teste de germinação (12 dias), primeira contagem (4 dias), teste de germinação a baixa temperatura (18 °C/8 dias), envelhecimento acelerado (42 °C/72 h), condutividade elétrica (50 sementes/75 mL de água; 25 °C/24 h), lixiviação de potássio (50 sementes/100 mL de água; 25 °C/3 h) e teor de água. O teste de condutividade elétrica, lixiviação de potássio, teste de germinação a baixa temperatura e envelhecimento acelerado são eficientes na avaliação do vigor e diferenciação de lotes de sementes de algodão. No entanto, devido à maior rapidez e facilidade de operação nos laboratórios de análises de sementes, o teste de lixiviação de potássio é alternativa apropriada para a avaliação do vigor de lotes de sementes.</span></p><p> </p> ER -