The Effect of Pre – Soaking Treatment with Gibberellic Acid and Heat Shock Treatment on Seed Dormancy Breaking in Sugar Palm Seeds (Arenga pinnata (Wurmb.) Merr.) Var. Genjah

• Main Author: RASIKHA (NIM : 11413054), RANA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/23831
• Institution: Institut Teknologi Bandung

Sugar palm (Arenga pinnata) comes from the family Arecaceae which has a high economic value. But, seed dormancy periods occurred quite long for approximately 6 – 12 months. Cause of the seed dormancy is the impermeability of the thick seed coat that makes water and oxygen is difficult to absorb. This research conduct to determine the effect of preliminary treatment to seed <br /> <br /> <br /> dormancy breaking and also determine the most optimal preliminary treatment to breaking the seed dormancy. <br /> <br /> <br /> The experimental were done by Completely Randomized Design in the 3 treatment, scarification as control (P0), the combination of scarification and pre-soaking treatment with gibberellic acid 50 ppm for 24 hours (P1), and the combination of scarification and heat shock treatment (P2) or heating the seeds above rice husk at 80°C for 5 minutes and splash it with water. Each treatment was repeated 6 times and each replication consisted 13 sugar palm seeds, total seeds used 234 seeds. Observation directed to growth of axis embryo length after 2 days. The result of this research showed that combination of scarification and pre-soaking treatment with gibberellic acid significantly affected to breaking the dormancy period and tested by ANOVA with <br /> <br /> <br /> significancy error at 1% and Post Hoc Test Tukey. The length of axis embryo P2 treatment is 0.3 cm. the combination of scarification and heat shock treatment unsignificantly affected to breaking the dormancy period. The control treatment also unsignificantly affected to breaking the dormancy period. The length of axis embryo growth in P0 treatment is 0.16 cm and the <br /> <br /> <br /> length of axis embryo growth in P1 treatment is 0.19 cm. It concluded that the preliminary treatment is affected the breaking of sugar palm seeds dormancy and the combination of scarification and pre-soaking treatment with gibberellic acid 50 ppm for 24 hours is the most <br /> <br /> <br /> optimal preliminary treatment.