Physiological and enzymatic alterations in papaya seed during storage

• Autor(a) principal: Dias,Denise Cunha Fernandes Dos Santos
• Data de Publicação: 2010
• Outros Autores: Estanislau,Wagner Tompson, Finger,Fernando Luiz, Alvarenga,Eveline Mantovani, Dias,Luiz Antônio Dos Santos
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista Brasileira de Sementes (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222010000100017
• topic: preservation; package; physiological quality; Carica papaya L

This study was done to evaluate the physiological and enzymatic alterations in papaya (Carica papaya L.) seeds during storage period. Seeds were extracted from mature fruits of Formosa group papaya hybrid Tainung 01. The sarcotesta was removed by rubbing the seeds on a wire screen under running water and then dried to the moisture content (MC) of 5, 8 or 11% The seeds were packed in multilayer paper bags, polyethylene bags, aluminum foil pouch and metallic canisters and stored for 15 months under laboratory conditions. Seeds were evaluated, at three month interval, for MC, germination, and the activity of acid phosphotase (AP) and malate dehyrogenase (MDH) was evaluated with the use of amide gel (12%) electrophoresis. The fresh seeds had post-harvest dormancy, which was broken after six month storage. Independent of the package type, the seeds could be stored for 12 months with 8 or 11% MC under ambient conditions. There was no association between seed deterioration and alterations in AP and MDH activity.