Dormancy of papaya seeds cv Maradol Roja during storage.
Keywords:Carica papaya L., germination, sarcostesta.
The objective of this work was to determine
the effect of humidity content of papaya cv Maradol
Roja and storage temperatura on dormany. The work was
conducted at the Laboratorio Nacional de Semillas, Empresa
Productora y Comercializadora de Semillas, La Habana,
Cuba, from November 2006 to January 2008. Seeds were
extracted from papaya fruits cv Maradol Roja and dried
to three humidiy contents (12%, 10,56% y 9,26%), and
aconditioned in polyiethylene bags and stored at 15ºC and
4ºC. Percentaje of seed germination, heigth and fresh weight
of the seedlings were measured at 3, 6, 9 and 12 months in
storage. There was a trend towards reduced seed germination
during the fi rst 6 months in storage (55,6%). After 9 and
12 months a signifi cant incresase in germination was
observed, independent of seed water content. Seeds stored
in environment at 15ºC favored germination after longer
sotrage compared to seeds kept in storage for shorter periods
(3 months). Seed dormany concluded between 9 and 12
months in storage irrespective of seed water content.
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