TITLE:
Storage of Campomanesia adamantium (Cambess.) O. Berg Seeds: Influence of Water Content and Environmental Temperature
AUTHORS:
Daiane Mugnol Dresch, Silvana de Paula Quintão Scalon, Tathiana Elisa Masetto, Rosilda Mara Mussury
KEYWORDS:
Myrtaceae, Brazilian Savanna, Drying, Conservation
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.5 No.17,
July
31,
2014
ABSTRACT: The present work evaluated the conservation of Campomanesia adamantium seeds under
different conditions. The fruits used in the study were collected from matrices
located in the city of Ponta Porã-MS, Brazil. After processing, the seeds
were slowly dried to different water content levels and subsequently exposed to
various environmental conditions: 25°C
± 2°C, 35% relative humidity (laboratory); 16°C
± 1°C, 40% relative humidity (cold and dry); 8°C
± 1°C, 35% relative humidity (refrigeration); and -18°C
± 1°C, 42% relative humidity (freezing). Each
treatment was conducted for 0 (recently processed seeds, with superficial
drying of 40 minutes), 30, 60, 90, 120, 150, and 180 days. Seed potential was
physiologically evaluated based on radicle protrusion, percentage of normal
seedlings, seedling length (primary root, shoot and total), and dry mass of the
seedlings. The experimental design was a completely randomized factorial scheme
with split-split plots (4 temperatures/environments × 5 water content × 7 storage
periods). C. adamantium seeds tolerated
a reduction in the water content to 15.3% but did not tolerate the storage
period, confirming the recalcitrant behavior of the seeds.