산민들레 종자의 발아특성 연구 (Germination Characteristics of Taraxacum ohwianum Kitam.)

서지정보

· 발행기관 : 한국약용작물학회
· 수록지 정보 : 한국약용작물학회지 / 24권 / 3호 / 177 ~ 182페이지
· 저자명 : 신소림, 임윤경, 권혁준, 김수영

초록

Background: Many Taraxacum spp. plants are widely used in medicine, but some of them have propagation problems, such as strong dormancy and poor germination rates. This study investigated the effects of temperature, gibberellic acid (GA3), and potassium nitrate (KNO3) on seed germination in Taraxacum ohwianum.
Methods and Results: The seeds (NIBRGR0000135524) were exalbuminous, and their length and width were 4.54 ± 0.032㎜ and 0.97 ± 0.029㎜, respectively. Various germination temperatures were tested (15, 20, 25, and 30℃), the optimum temperature for germination was found to be 20℃ (31.3%). High temperature (30℃) resulted in non-typical seedlings (thickened and crumpled cotyledons, with a restricted root system). To increase the germination capacity, GA3 (200, 500, and 1,000 ㎎/ℓ ) or KNO3 (20, 50, 100, 200, and 500 ㎎/ℓ ) solutions were used as pre-soaking solutions instead of water. The GA3 treatments increased the germination percentage and rate, but germination percentage was higher with the KNO3 treatments. Under the 50 - 200 ㎎/ℓ KNO3 treatments, the germination percentage exceeded 80% after 12 days, and 50 ㎎/ℓ KNO3 was notably effective (91.2% after 15 days).
Conclusions: T. ohwianum seeds showed improved germination at low temperatures. The best method for germination was presoaking in 50 ㎎/ℓ KNO3 for 24 h, in the dark at 4℃, and then incubating the germinated seed at 20℃ for 15 days.

영어초록

Background: Many Taraxacum spp. plants are widely used in medicine, but some of them have propagation problems, such as strong dormancy and poor germination rates. This study investigated the effects of temperature, gibberellic acid (GA3), and potassium nitrate (KNO3) on seed germination in Taraxacum ohwianum.
Methods and Results: The seeds (NIBRGR0000135524) were exalbuminous, and their length and width were 4.54 ± 0.032㎜ and 0.97 ± 0.029㎜, respectively. Various germination temperatures were tested (15, 20, 25, and 30℃), the optimum temperature for germination was found to be 20℃ (31.3%). High temperature (30℃) resulted in non-typical seedlings (thickened and crumpled cotyledons, with a restricted root system). To increase the germination capacity, GA3 (200, 500, and 1,000 ㎎/ℓ ) or KNO3 (20, 50, 100, 200, and 500 ㎎/ℓ ) solutions were used as pre-soaking solutions instead of water. The GA3 treatments increased the germination percentage and rate, but germination percentage was higher with the KNO3 treatments. Under the 50 - 200 ㎎/ℓ KNO3 treatments, the germination percentage exceeded 80% after 12 days, and 50 ㎎/ℓ KNO3 was notably effective (91.2% after 15 days).
Conclusions: T. ohwianum seeds showed improved germination at low temperatures. The best method for germination was presoaking in 50 ㎎/ℓ KNO3 for 24 h, in the dark at 4℃, and then incubating the germinated seed at 20℃ for 15 days.

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