Comprehensive evaluation and selection of individual Tectona grandis germplasm resources
In order to select excellent varieties of Tectona grandi,7 important indicators of timber species,including tree height,breast-height diameter,single tree volume,crown width,non-destructive dry wood,stem form,and resistance,were selected.Over 1900 T.grandi from 8 countries were tested on site for each tree,and a database was established.Establish an evaluation model using the Analytic Hierarchy Process to comprehensively evaluate individual T.grandis.The results showed that 28 individual plants,including No.600,No.1426,No.569,No.1758,and No.26,ranked in the top 28 in comprehensive scores,were selected as candidates for excellent clones of T.grandis.Among them,27 individual plants were from Myanmar germplasm population,and 1 individual plant was from Indonesia germplasm.The germplasm population of T.grandis from Myanmar has shown outstanding performance,with a relatively large population in Honghe Prefecture,which can serve as an important germplasm resource for the breeding of high-quality T.grandis varieties in the future.
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