Abstract
A preliminary germination study was carried out on seed of eleven provenances of Chinese mahogany [ Toona sinensis (A. Juss.) Roem.]. The species is native to China and characterized by high density and dark colored wood, which is used mainly in furniture making. Seeds of the eleven provenances were tested on a thermoplate gradient germinator at temperatures of 15°C, 18°C, 22°C, 25°C, and 28°C. The three upper temperatures (22°C, 25°C, and 28°C) provided the fastest and highest germination among the eleven provenances, and on the average 25°C was considered as optimum temperature for the species. Based on mean time to germination, germination values, root length and hypocotyl length, it was possible to delineate the eleven provenances into three geographic groups. Additional studies using more evenly distributed samples from the whole range of the species are expected to further define seed collection zones for this important species in China.
Published Version
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