EFFECT OF STORAGE TEMPERATURE AND GIBBERELLIC ACID ON GERMINATION OF SUGAR APPLE (ANNONA SQUAMOSAL L.) SEEDS

The storage of sugar apple seeds was evaluated for 2.5 months under room temperature (24±5°C) and low-temperature (4±1°C), and seed soaking with gibberellic acid (GA₃) at five concentrations (400, 450, 500, 550 and 600 ppm). Germination and seedling vigour were evaluated at 38°C and 80% relative humidity.
No association between viability and percent germination was found.
The moisture content of the stored seeds under both environments was within favorable limits for germination.
Seed soaking with GA₃ positively affected the percent germination and the germination rate.
Seedling vigour was negatively affected by 600 ppm of GA₃. The best treatments that promoted germination were room temperature storage with 400 ppm GA₃ (83.68%) and room temperature storage with 500 ppm GA₃ (83.46%). These treatments had more than 50% germination 10 days after sowing.
Low-temperature storage reduced the percent germination but had no effect on germination rate neither on seedling vigour.
The treatments that promoted the best seedling vigor expression were those that involved cold-temperature storage with 400 and 450 ppm GA₃. Our results indicated that seed storage in combination with GA₃ treatment overcame dormancy.

XXVIII International Horticultural Congress on Science and Horticulture for People (IHC2010): III International Symposium on Plant Genetic Resources

E. Vidal-Lezama, M.J. Ayala-Villegas, A. Curiel-Rodríguez, L.M. Marroquín-Andrade , J. Martínez-Solís

viability, moisture, immature embryo, dormancy, recalcitrant, orthodox

https://doi.org/10.17660/ActaHortic.2011.918.100