Abstract
Background : Considerable time and effort is required to develop new Panax ginseng varieties. Ginseng breeders have been developing techniques to shorten the breeding cycle to resolve this problem. In this study, we investigated the effects of adding GA₃ and alternating temperature (AT, 2℃→ −2℃ → 2℃) on breaking bud dormancy in the varieties (Chungsun and Sunun) of ginseng root. Methods and Results : The GA₃ soaking treatment and AT were applied to one year old roots, which greatly accelerated the emergence of new buds. In one year old roots, new buds emerged from the 4th day post transplanting and after breaking dormancy with GA₃ and AT treatments. The emergence of new buds was completed within two weeks. The rate of bud emergence for Chungsun was 60% - 98% over 15 - 60 days after the AT and GA₃ treatments. The emergence rate of Sunun was 46% - 92%. Normal growth of the ginseng seedling was observed in spite of the early breaking of bud dormancy by combined GA₃ and AT treatments. Conclusions : GA₃ and AT treatments shortened the dormancy period and facilitated the stable emergence of ginseng seedlings. However, some plants suffered deformities and early sprouting owing to the combined GA₃ and AT treatments. Early sprouting was free from dormancy after leaf fall from the of aerial part of the plant.
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Claims 4
Claim · model-written summary
GA₃ soaking and alternating temperature accelerated ginseng bud emergence.
- Taxon
- ginseng
Panax ginsengt0 - Organ / stage
- one year old rootse0
- Treatment
- GA₃ soaking treatment and ATe0
- Outcome
- emergence of new budse0
- Direction
- acceleratede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The GA₃ soaking treatment and AT were applied to one year old roots, which greatly accelerated the emergence of new buds.”
t0“Panax ginseng C. A. Meyer”
Claim · model-written summary
Chungsun bud emergence ranged from 60% to 98% over 15 to 60 days after treatment.
- Taxon
- ginsengPanax ginsengt0
- Material
- Chungsune0
- Outcome
- rate of bud emergencee0
- Value
- 60% - 98%e0
- Qualifier
- 15 - 60 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rate of bud emergence for Chungsun was 60% - 98% over 15 - 60 days after the AT and GA₃ treatments.”
t0“Panax ginseng C. A. Meyer”
Claim · model-written summary
Sunun bud emergence ranged from 46% to 92%.
- Taxon
- ginsengPanax ginsengt0
- Material
- Sunune0
- Outcome
- emergence ratee0
- Value
- 46% - 92%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The emergence rate of Sunun was 46% - 92%.”
t0“Panax ginseng C. A. Meyer”
Claim · model-written summary
Some treated ginseng plants developed deformities and early sprouting.
- Taxon
- ginsengPanax ginsengt0
- Treatment
- combined GA₃ and AT treatmentse0
- Outcome
- deformities and early sproutinge0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, some plants suffered deformities and early sprouting owing to the combined GA₃ and AT treatments.”
t0“Panax ginseng C. A. Meyer”
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