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지황의 출아조건 및 플러그 육묘기간 구명 연구

Investigation of Emergence Conditions and Plug Seedling Periods in Rehmannia glutinosa (Gaertn.) Libosch. ex Steud.

한국약용작물학회지 2019년 27권 4호 p.271 ~ 277
이상훈 ( Lee Sang-Hoon ) - 농촌진흥청 국립원예특작과학원 인삼특작부

구성철 ( Koo Sung-Cheol ) - 농촌진흥청 국립원예특작과학원 인삼특작부
허목 ( Hur Mok ) - 농촌진흥청 국립원예특작과학원 인삼특작부
이우문 ( Lee Woo-Moon ) - 농촌진흥청 국립원예특작과학원 인삼특작부
박민수 ( Park Min-Su ) - 공주대학교 생물교육학과
한종원 ( Han Jong-Won ) - 농촌진흥청 국립원예특작과학원 인삼특작부

Abstract


Background: Rehmannia glutinosa (Gaertn.) Libosch. ex Steud. has long been used as a traditional medicinal plant in Korea. This study was carried out to investigate the emergence conditions during the seedling periods in R. glutinosa.
Methods and Results: The rhizomes of R. glutinosa variety (Jihwang 1) were harvested in the 22, March, 2018. The rhizomes were sown on in 50-cell plug trays. The emergence rates of seedlings at 15℃, 20℃, 25 - 40℃, and 45℃ treatment seedling were 1.3%, 96%, 100% and 0%, respectively. Rhizome rot was occurred at the temperature of 15℃ and 45℃. The emergence rates of seedlings in high moisture (HM), moderate moisture (MM) and low moisture (LM) treatments at 35℃ were 99.3%, 100%, and 0%, respectively. Drought damage was recorded in plant with the LM treatment. Seedling quality surveys were carried out at 10-days intervals from 10 to 60 days after sowing (DAS). Leaf length and leaf width were increasing until 50 DAS and the number of leaves was increasing until 60 DAS. Root length was increasing until 40 DAS, and then, flowering occurred from 30 to 60 DAS. Lastly, at 40 DAS, leaf aging and root enlargement was observed.
Conclusions: We concluded that the emergence of seedlings was possible in the range of 20 to 40℃. Considering drying and rotting damage, we concluded that the moderate level of moisture is most appropriate for seedling emergence. In addition, we concluded that optimal seedling periods are between 30 and 40 DAS.

키워드

Rehmannia glutinosa; Emergence Condition; Seedling Period; Soil Moisture; Temperature
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