Drying and storage of Eugenia involucrata DC. seeds

Scientia Agricola

Angela Maria Maluf¹  Denise Augusta Camargo Bilia¹  Claudio José Barbedo¹ 

[1] ,Instituto de Botânica Seção de Sementes e Melhoramento Vegetal São Paulo SP ,Brasil

关键词: germination;    drying rate;    recalcitrant seed;    germinação;    velocidade de secagem;    semente recalcitrante;   

DOI  :  10.1590/S0103-90162003000300009

来源: SciELO

【 摘 要 】

The physiological quality of seeds of native species is important to produce healthy saplings and therefore guarantee the success of programs to recover disturbed vegetation. This reinforces the necessity for investigating the physiological quality of those seeds. To evaluate the effects of different drying rates on the germination, moisture content and storability of Eugenia involucrata diaspores, mature fruits collected at Mogi Guaçu, SP, Brazil had their epi- and mesocarps removed by washing and were dried at 30, 40 or 50ºC until their water content was reduced from 57% (fresh diaspores) to 13% (final drying), totaling six drying levels. In a second experiment, diaspores had their moisture content reduced from 57% to 49%, at 30ºC, totaling six drying levels (0h, 1h, 2h, 3h, 4h and 5h), and were kept for 180 days in plastic bags under cold storage. The drying rate had no effect on tolerance to desiccation by E. involucrata diaspores; water contents lower than 51% decreased both germinability and storability. Diaspores can be stored for up to 180 days as long as their water content is reduced to 53% and they are kept inside plastic bags under cold storage.

【 授权许可】

CC BY   
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