Sabaragamuwa University of Sri Lanka

Vegetative Growth and Yield Associated Flowering Time Variation in Sri Lankan Rice “Hondarawala”

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dc.contributor.author Rathnathunga, E. U. U
dc.contributor.author Senanayake, S. G. J. N
dc.contributor.author Dissanayake, N
dc.contributor.author Seneweera, S
dc.contributor.author Geekiyanage, S
dc.date.accessioned 2021-01-08T07:01:21Z
dc.date.available 2021-01-08T07:01:21Z
dc.date.issued 2016-01
dc.identifier.uri http://repo.lib.sab.ac.lk:8080/xmlui/handle/123456789/945
dc.description.abstract Breeding new varieties adaptable for changing climate is an essential need in sustainable rice production. Around 2000 Sri Lankan rice accessions at Plant Genetic Resources Centre (PGRC), Sri Lanka have not been fully characterized for the yield potential and sensitivity to mild photoperiodic differences for days to flowering (DF). DF is a candidate key determinant in yield components in rice and understanding the physiological and molecular nature for DF is important to manipulate crop yield through breeding programmes. The objective of this study was to assess the genetic diversity of 15 Hondarawala accessions from PGRC using selected 37 morphological characters and DF. DF varied from 58-189 days while accession number 3988 did not flower until 200th day of seed germination. Principal Component Analysis (PCA) revealed that four principle components (PA) explained 86.5% of total observed variation. Variation of DF positively associated with most of morphological characters of vegetative growth while a few characters were negatively associated. In the dendogram, 10 clusters formed at rescale distance of 5. Widely variable DF accessions distributed among clusters. en_US
dc.language.iso en_US en_US
dc.publisher Belihuloya, Sabaragamuwa University of Sri Lanka en_US
dc.subject Days to flowering en_US
dc.subject genetic diversity en_US
dc.subject morphological characters en_US
dc.subject Sri Lankan rice en_US
dc.title Vegetative Growth and Yield Associated Flowering Time Variation in Sri Lankan Rice “Hondarawala” en_US
dc.type Article en_US


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