Standardization of Suitable Pre-treatments to Break Dormancy of Queen Palm (Livistona rotundifolia) Seeds

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dc.contributor.authorTennakoon, A.H.M.N.L .
dc.contributor.authorGunadasa, H.K.S.G.
dc.contributor.authorDe Mel, C.J.
dc.date.accessioned2022-03-03T04:03:05Z
dc.date.available2022-03-03T04:03:05Z
dc.date.issued2013
dc.description.abstractQueen palm (Livistona rotundifolia) is a popular hermaphroditic palm which has the highest demand as a pot plant. It requires a shady sheltered place in the sub-tropics and humid, tropical areas.It is a palm which only propagates from seeds and also disreputable in the nursery trade for slow and uneven seed germination mainly because of hard and impermeable seed coat.The hard seed coat prevents imbibition and gaseous exchange that leads to physical dormancy. It has been estimated that over 25% of all palm species having less than 20% total germination (Tomlinson, 1990). Due to the often slow and uneven germination of seeds, there is a great deal of interest to develop a technique to soften the hard seed coat that might result in more even rates of germination. Therefore, an experiment was carried out to standardize the best treatment to overcome the dormancy and to attain higher germination potential. Methodology This experiment was carried out in a shade house at the Omega Green (Pvt.) ltd, Negambo which is in the Low country Wet Zone of Sri Lanka from May to September 2013.The seed samples obtained from numerous arbitrarily selected trees in Godigamuwa area and samples of different maturity levels were tested for viability. Seeds were assessed for germination behavior and seedling characters with four pretreatments. Treatments were T 1- Presoaking treatment in cold water for 12 hours (Control), T 2- Hot water soaking treatment in 55 to 60 C hot water for 2 minutes and subsequently soaked in water for 12 hours, T 3- Mechanical Treatment with hammer, and T4-Chemical Treatment (seeds were treated with 10% Na2HOCl solution for 10 to 30 minutes and soaked in water for 12 hours).Seeds were soaked for 7 days in water prior to the dormancy breaking treatments. Treated seeds were sown in seed beds containing coir dust, sand 1:1 ratio as medium. These treatments were arranged in Single Factor Complete Randomized design (CRD) with four treatments in four replicates. Seed germination behavior and seedling characters were measured after first month of sawing. Four month aftersowing, counts were made and germination expressed as percentage of seeds which produce normal seedlings. After germination count twenty random seedlings from each treatment were measured for their shoot and root length. Vigor index was calculated as prescribed by ISTA (1985).en_US
dc.identifier.urihttp://www.erepo.lib.uwu.ac.lk/bitstream/handle/123456789/8467/63-EAG-Standardization%20of%20Suitable%20Pre-treatments%20to%20Break%20Dormancy%20of%20Queen%20Palm%20.pdf?sequence=1&isAllowed=y
dc.language.isoenen_US
dc.publisherUva Wellassa University of Sri Lankaen_US
dc.subjectSeedsen_US
dc.subjectPot planten_US
dc.subjectAgricultureen_US
dc.subjectExport Agricultureen_US
dc.subjectPlant Biologyen_US
dc.titleStandardization of Suitable Pre-treatments to Break Dormancy of Queen Palm (Livistona rotundifolia) Seedsen_US
dc.title.alternativeResearch Symposium 2013en_US
dc.typeOtheren_US
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