Identifying methods for rapid and uniform germination and storage conditions for seeds of kithul (Caryota urens L.)

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Research Paper 01/06/2018
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Identifying methods for rapid and uniform germination and storage conditions for seeds of kithul (Caryota urens L.)

Gamini Hitinayake, Muditha Munasinghe, Chamali Ranasinghe
Int. J. Agron. Agri. Res.12( 6), 94-100, June 2018.
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This experiment was conducted to identify methods to get rapid and uniform germination and packaging material for storing Kithul seeds. The study was conducted at the University seed testing laboratory, Dodangolla, Kundasale. Pericarp removed seeds were subjected to nine treatments: removal of portion of endosperm (t2), rubbing of seed coat using a sand paper (t3), hot water treatment 80oC for 5 seconds (t4), for 30 seconds (t5), oven heating at 60oC for 10 seconds (t6), for 2 minutes (t7), for 5 minutes (t8), concentrated sulfuric acid for 10 seconds (t9), 0.5M sulfuric acid for 10 seconds (t10) and untreated seeds (t1). Numbers of seeds germinated at weekly intervals were recorded. Seeds stored with and without pericarp in sealed glass bottles, polythene and paper bags were tested for viability at monthly intervals. Germination percentage was evaluated after keeping Kithul seeds in sealed polythene bags filled with moist sand for two months. Results showed that the removal of pericarp completely and rubbing of seed coat overlying the embryo was the most effective treatments to break the dormancy. However, oven heating or H2SO4 acid treatments are better suited for large scale operations. Use of sealed containers is the best method to store seeds.  Keeping seed mixed with moist sand in sealed polybags for germination is a promising method in handling large quantities of seed. Planting seeds as soon as collection is essential as viability of seeds were reduced to 85.5% from 92.2% after one month in the storage.


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