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Abstract
A modified HPLC method for resveratrol determination for rapid screening of phenotypes of seedling population was developed for the Taiwan native Polygonum cuspidatum. The resveratrol concentration was 3.89 ± 1.03 mg.g−1 of the rhizome dry weight. In in vitro culturing of 11 acclimatized lines of genotype-dependent plants, which were replanted in the original location, only three genotypes showed a distant resemblance to regenerated lines and native plants. The genotype 051111 line in in vitro plants showed high resveratrol expression grown under acclimatized conditions and original locations. Resveratrol and its glucoside-piceid revealed mutual transformation depending on the growth climates.