Abstract

Objective: Find out the growth-development law of P. ternata, and offer references for suitable period for harvesting and standardized cultural technique. Methods: Periodic sampling, investigation and measurement; Results: Dynamic change of each growth index all show a similar rule, namely that with the elongation of growth-development course, it was characterized an “S” type curve, and peak values are observed during the first “inverted seedlings” period. Especially, average drying rate of tubers during the first “inverted seedlings” period is significantly higher than that during the second period. Conclusions: Initial stage of the first “inverted seedlings” is quite suitable period for harvesting of P. ternata, and thus its utilization value is further efficaciously enhanced.

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