%0 Journal Article
%T Physiological maturity of eggplant seeds Maturidade fisiol車gica de sementes de berinjela
%A Denize Carvalho Martins
%A Fernanda Keila Junqueira Vilela
%A Renato Mendes Guimarˋes
%A Luiz Antˋnio Augusto Gomes
%J Revista Brasileira de Sementes
%D 2012
%I Associa??o Brasileira de Tecnologia de Sementes
%R 10.1590/s0101-31222012000400002
%X Determination of seed physiological maturity and ideal moment for harvesting fruits to extract their seeds are important aspects to produce seeds with high quality. To identify the best period for harvesting eggplant fruits, associated with ideal resting period of the fruit for extracting seeds, an eggplant production field was installed in municipality of Ijaci, in the State of Minas Gerais, Southwestern Brazil. The fruits were harvested at periods of 49, 56, 63, 70, and 77 days after pollination (DAP). The seeds of fruits harvested in each period were manually extracted immediately after harvest or after a post-harvest resting period of seven days, under a shed. The physiological quality of seeds was assessed by tests of: germination percentage; germination and emergence speed indexes; and electrical conductivity; which were carried out in the Central Seed Laboratory, Federal University of Lavras. Electrophoretic analyses of isoenzymes: catalase (CAT); esterase (EST); superoxide dismutase (SOD); and peroxidase (PO), were also therein performed. Results of germination and vigor of seeds have showed that the best period for harvesting the fruit is around 70 DAP; and that seeds should be extracted immediately after harvest. Electrophoretic analysis of enzymes has showed immaturity for eggplant seeds, harvested after 49 DAP. A determina  o da maturidade fisiol車gica das sementes e do momento ideal de colheita dos frutos para extra赤-las s o aspectos importantes para a produ  o de sementes com alta qualidade. Para identificar a melhor 谷poca de colheita dos frutos de berinjela e o tempo ideal de descanso do fruto para extra  o das sementes, foi instalado um campo de produ  o, no munic赤pio de Ijaci, MG. Os frutos foram colhidos aos 49, 56, 63, 70 e 77 dias ap車s a poliniza  o (DAP). As sementes dos frutos colhidos, em cada 谷poca, foram extra赤das manualmente, imediatamente ap車s a colheita, ou ent o ap車s repouso p車s-colheita, por sete dias, em galp o. A qualidade das sementes foi avaliada por meio dos testes de: germina  o; emerg那ncia; 赤ndices de velocidade de germina  o e emerg那ncia; e condutividade el谷trica; e tamb谷m a an芍lise eletrofor谷tica das isoenzimas catalase (CAT), esterase (EST), super車xido dismutase (SOD) e peroxidase (PO) foram conduzidas no Laborat車rio Central de Sementes, Universidade Federal de Lavras. Os resultados de germina  o e vigor das sementes revelaram que a melhor 谷poca para a colheita dos frutos 谷 de, aproximadamente, 70 DAP; e que as sementes devem ser extra赤das imediatamente ap車s a colheita. A an芍lise eletrofor谷tica das enzimas evidenci
%K Solanum melongena
%K colheita
%K germina  o
%K per赤odo de repouso
%K Solanum melongena
%K harvest
%K germination
%K resting period
%U http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222012000400002