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http://dx.doi.org/10.7732/kjpr.2019.32.5.457

Dormancy type and Germination Characteristics of Seeds of Lonicera chrytsantha Turcz. Ex Ledeb (Caprifoliaceae)  

Park, Hyung Bin (Division of Plant Resources, Korea National Arboretum)
Ko, Chung Ho (Division of Plant Resources, Korea National Arboretum)
Kim, Sang Yong (Division of Plant Resources, Korea National Arboretum)
Lee, Ki Cheol (Division of Plant Resources, Korea National Arboretum)
Kim, Jae Hyeun (Division of Plant Resources, Korea National Arboretum)
Chung, Jae Min (Division of Plant Resources, Korea National Arboretum)
Publication Information
Korean Journal of Plant Resources / v.32, no.5, 2019 , pp. 457-462 More about this Journal
Abstract
This study was conducted to investigate seed dormancy type and germination characteristics of Lonicera chrysantha. In imbibition test, the seeds imbibed water readily. Therefore, the seeds did not have physical dormancy (PY). The seeds have undeveloped embryo at seed dispersal and, then the E:S ratio (embryo/seed ratio) increased more than about 46% just before germination. In temperature experiments (5, 15, 20 and $25^{\circ}C$), the seeds did not germinate during incubation at $5^{\circ}C$. At $20^{\circ}C$, the seeds started to germinate from a week after sowing and the final germination was 86.7% at 2 weeks after sowing. At $15^{\circ}C$, the seeds started to germinate at 2 weeks and the final germination rate was 75.0% at 4 weeks after sowing. At $25^{\circ}C$, the seeds started to germinate at a week and the final germination rate was 48.3% at 19 weeks after sowing. Consequently, Optimum temperature of germination is $20^{\circ}C$ that shown highest final germination rate and shortest mean germination time. The seeds germinated all temperature treatments within 4 weeks except to $5^{\circ}C$. Therefore, it is concluded that seeds of L. chrysantha have only morphological dormancy (MD).
Keywords
Embryo/seed ratio; Morphological dormancy; Optimum temperature; Seed dormancy type;
Citations & Related Records
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