EVALUATING THE GERMINABILITY OF SEEDS AND GROWTH PERFORMANCES OF NURSERY PLANTS OF ALTERNATIVE SHADE TREE SPECIES IN TEA PLANTATION

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dc.contributor.authorSUMAN, M.
dc.date.accessioned2021-10-06T10:47:23Z
dc.date.available2021-10-06T10:47:23Z
dc.date.issued2015
dc.description.abstractAn experiment was conducted to find out the most suitable alternative tree species for the Uva region under nursery conditions. Seeds of tree species such as Derris mycrophylla, Cassia spectabilis, Techoma stance and recommended shade tree species such as Albizzia moluccana, Grevillea robusta were used to evaluate the viability percentage and germination percentage after exposing to different pre-treatments. Growth parameters such as seedling height and leaf count at the nursery stage were evaluated after raising the nursery with seeds of Derris mycrophylla, Cassia spectabilis, and Albizzia moluccana; and with small seedlings of Techoma stance and Grevillea robusta. The seeds of shade and alternative trees were collected from various places and seedlings were collected from nearby field. The viability percentage was measured using Tetrazolium test. Pre-treatments methods used were soaking seeds in water at ambient temperature, hot water treatment, chemical treatment (98%, H2504) and mechanical damaging treatment. The present studies showed that Cassia spectabilis had the highest viability percentage of 92% while Albizzia moluccana and Derris mycrophylla had only 87% and 85% viability. Techoma stance seeds did not show any viability. Germination percentage was also the highest in Cassia (98%) with mechanical damaging of seed coat. While Albizzia seeds treated with hot water and mechanical damaging resulted in 80% and 64% germination, respectively. However, Derris mycrophylla seeds recorded only 55% and 60% germination with mechanical damaging and hot water treatments, respectively. Cassia spectabilis recorded the highest seedling height followed by Albizzia moluccana and Derris mycrophylla and Grevillea robusta seedling height was higher than that of Techoma stance. Whilst, the fastest growth rate in Albizzia moluccana was followed by Cassia spectabilis and Derris mycrophylla and growth rate of Grevillea robusta seedlings was faster than Techoma stance. Leaf count was the highest with Derris mycrophylla compared with Cassia spectabilis and Albizzia moluccana and leaf count of Techoma stance was higher than that of Grevillea robusta. Highest root depth was recorded with Cassia spectabilis followed by Derris mycrophylla and Albizzia moluccana. Root depth of Techoma stance was higher than that of Grevillea robusta. Hence, Cassia spectabilis was found to be most suitable among alternative tree species. Derris and Techoma are also found to be suitable as far as the nursery growth phase is concerned. Key words: Pre-treatments, Viability, Germination, Shade Trees, Tetrazolium test.en_US
dc.identifier.otherUWU/TEA/11/0018
dc.identifier.urihttp://www.erepo.lib.uwu.ac.lk/bitstream/handle/123456789/7132/UWULD%20TEA%2011%200018-06052019092710.pdf?sequence=1&isAllowed=y
dc.language.isoenen_US
dc.publisherUva Wellassa University of Sri Lankaen_US
dc.relation.ispartofseries;UWU/TEA/11/0018
dc.subjectTea Technology and Value Addition Degree Programme ( TEA)en_US
dc.titleEVALUATING THE GERMINABILITY OF SEEDS AND GROWTH PERFORMANCES OF NURSERY PLANTS OF ALTERNATIVE SHADE TREE SPECIES IN TEA PLANTATIONen_US
dc.title.alternativeResearch Article – TEA 2015en_US
dc.typeThesisen_US
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