논문 (학술지)
Dormancy breaking and germination requirements of seeds of Thalictrum uchiyamae (Ranunculaceae) with underdeveloped embryos
등록번호 | RPMS-2019-0190735202 | SCI 구분
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※구분 : SCI(SCIE포함), 비SCI |
SCI |
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저자명 (주·공동저자) | Lee Seung Youn ※ 과제 참여정보와 일치하는 연구자 상세정보로 정확하지 않을 수 있습니다. |
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논문구분 | 국외전문학술지 | 학술지명 | SCIENTIA HORTICULTURAE |
ISSN | 0304-4238 | 학술지 출판일자 | 2018-01-01 |
학술지 볼륨번호 | 231 | 논문페이지 | 82 ~ 88 |
학술지 임팩트팩터 | 1.76 | 기여율 | 100 % |
DOI | 10.1016/j.scienta.2017.12.004 | ||
초록 | Thalictrum uchiyamae Nakai is an herbaceous perennial plant that has potential for greater utilization for landscaping and medicinal purposes. In the present study, we investigated some of the factors that affect seed dormancy and germination in this species. To determine the temperature requirements for embryo growth and germination in field conditions, the seeds were buried in field soil. Every 1 or 2 weeks, the seeds were exhumed, and embryo growth, germination, and seedling emergence were investigated. In the laboratory, the effects of temperature and GA3 on dormancy break and germination were investigated in order to characterize the seed dormancy. The seeds had underdeveloped embryos that were physiologically dormant at maturity in late September. In natural conditions, embryo growth and germination occurred in March of the following year, and seedlings emerged in early April. The physiological dormancy of the embryos was broken by cold stratification at 5oC for 8 weeks, but warm temperatures (25/15oC) were required to promote embryo elongation even after the physiological dormancy was broken. GA3 treatment could substitute for the cold stratification requirements and broke seed dormancy of T. uchiyamae, 87.3% of which germinated after 8 weeks of incubation at 25/15oC at 100 mg·L-1 GA3 soaking treatment. These results suggest that the seeds of T. uchiyamae exist in a state of non-deep simple morphophysiological dormancy. The temperature requirements for the dormancy break of the seeds enabled the seedlings to emerge in the very beginning of the growing season the following year. These results represent practical knowledge for propagation of these plants from seed. |
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