Abstract
Buxus ichangensis is a rare shrub specifically distributed along the banks of the Yangtze River in Three Goreges Reservoir area. In order to bring a basis for population reconstruction and ex situ conservation, we surveyed the flood-tolerance capacity of B. ichangensis together with its close species, Buxus microphylla. The results showed that B. ichangensis plants were more tolerant to waterlogging stress. Through further investigation of the physiological responses of 2 Buxus species, we supposed a possible mechanism for flooding adaption that physiological factors, especially photosynthesis rate, stomatal conductance, chlorophyll content and root livingness, were highly correlated with flooding-tolerance.
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