• Proceedings of the Plant Resources Society of Korea Conference
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• 2019.04a
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• pp.84-84
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• 2019

산채류의 종자 및 종묘는 시중 거래가격이 높게 형성되어 재배농가의 경영비 증가로 이어지고 있다. 특히 산채 꾸러미에 분류되는 작물 중 개미취(Aster tataricus), 섬쑥부쟁이(Aster glehnii ), 우산나물(Syneilesis palmata)은 주로 종묘의 형태로 공급되어 수급이 안정치 못하다. 이에 본시험은 개미취, 섬쑥부쟁이, 우산나물의 우량종자 생산을 위한 종자 결실률 향상 재배조건과 채종적기를 구명하고자 하였다. 시험작목을 전북 남원시 허브산채시험장에서 2016년 4월에 종묘를 노지에 정식하였다. 적정 채종 재배조건을 구명하기 위해 2018년 노지, 하우스, 55% 차광막을 설치한 처리구별 각 작물의 개화시기, 개화율, 생육특성, 결실률 등을 조사하였다. 또한 채종적기를 설정하기 위해서 각 작물별 개화 후 50일, 70일, 90일, 110일, 130일 간격으로 채종하여 결실률과 종자 발아율을 조사하였다. 개화가 시작된 일자는 개미취의 경우 하우스재배, 노지재배, 차광재배 순으로 빨랐으며 섬쑥부쟁이는 노지재배에서 개화시기가 가장 늦었다. 모든 작물의 개화가 종료되는 시점은 처리 간 차이가 없었다. 개화율은 개미취와 섬쑥부쟁이는 노지재배, 하우스재배, 차광재배 순으로 많았으며 우산나물은 노지재배시 개화율이 9.3%로 매우 낮았다. 개화기 생육특성을 조사한 결과 개미취는 초장과 엽폭이 차광재배, 하우스재배, 노지재배 순으로 커지는 경향이었으며, 섬쑥부쟁이는 하우스 재배에서 타 재배방법에 비해 우수하였다. 우산나물은 차광재배에서 생육이 가장 좋았다. 결실률은 개미취와 섬쑥부쟁이는 재배방법에 상관없이 결실률이 60%이상이었다. 반면 우산나물은 평균 31%로 타작물에 비해 상대적으로 결실률이 낮았으며 차광 재배일 때 43%로 가장 결실률이 좋았다. 개미취는 개화 50일 이후부터 종자 결실률이 65%이상으로 높았으며, 섬쑥부쟁이의 결실률은 개화 후 50일이 가장 좋았으며, 그 이후로 점차 결실률이 떨어지는 경향이었다. 우산나물은 개화 후 90~110일경에 가장 결실률이 높은 경향이었다. 개미취는 개화 후 70일일 때 가장 발아율이 낮았으며, 90일일 때 가장 발아율이 좋았다. 섬쑥부쟁이의 발아율은 개화 50일 이후부터 최종 채종시기까지 80%이상으로 우수하였다. 우산나물은 채종시기에 따라 발아율 정도가 매우 상이하여, 채종시기가 늦어질수록 발아율이 높아졌다. 따라서 개미취는 하우스 재배를 통해 개화 후 90일 때 채종하는 것이 가장 발아율이 좋았으며, 섬쑥부쟁이는 차광재배일 경우 개화 50일 이후에는 발아율이 90% 이상이므로 이때부터 종자비산 전까지가 채종적기로 판단된다. 우산나물은 타작물에 비해 다소 결실률이 떨어지나 차광재배 시 개화 110일 후 우량종자를 채종할 수 있을 것으로 여겨진다.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.31 no.1
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• pp.62-67
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• 1986

Forty-nine malting barley varieties were tested at 3 and 8 weeks after harvest, stored in natural glasshouse so as to investigate varietal variation of germinative energy(GE), capacity(GC) and water sensitivity(WS). The differences among GE, GC, promptness index(PI), and WS on paper at two moisture levels (4$m\ell$ and 8$m\ell$ tests) were great at 3 weeks after harvest, but small at 8 weeks after harvest. Excess water depressed the germination of dormant grains. The GE of whole varieties were excellent, but WS of only two varieties, CI 12062 and CI 15631 were bad at 8 weeks after harvest. So in the case of broad germplasm to be used for crossing materials, it is suggested that WS will be tested to screen good quality malting lines. WS was highly significantly correlated with GE, GC, and PI of 8 ml test, but was not with three factors of 4 $m\ell$ test. GE and WS were various with storage period, varieties and grain plumpness, indicated that breeding good grain-filling varieties and improving production practice for good grain-filling would be studied in the future.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.40 no.6
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• pp.711-715
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• 1995

This study was carried out to determine the desirable screeing condition for low-temperature germinability of rice seeds. The germination test was performed with fifty rice varieties from three countries, mainly including the recent Korean rice cultivars. The analyzed result of germination test under three temperature conditions(13$^{\circ}C$, 16$^{\circ}C$, $25^{\circ}C$) pointed out that 11 days after seeding at 13$^{\circ}C$ was the most efficient testing condition for low-temperature germinability in terms of mean and variation in germination rate. Highly significant correlations were observed between germination rates of 11 days after seeding at 13$^{\circ}C$ and germination coefficients, average days of germination at 13 for 20 days. Low-temperature germinability were highly positively associated with days to heading or amylose content, but negatively correlated with grain width.

• Korean Journal of Environmental Agriculture
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• v.21 no.3
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• pp.202-207
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• 2002

To establish the seed treatment method of the gamma radiation for germination enhancement of bottle gourd(Lagenaria siceraria Standl.) and pumpkin(Cucurbita ficifolia Bouche), seeds were irradiated with the dose of 1$\sim$20 Gy of the gamma radiation. The germination rate in irradiated group was higher than that of the control, depending on seed condition. In the case of bottle gourd, the germination rate of 70$\sim$80% germinative seed was increased at 4$\sim$20 Gy irradiated groups. Especially, it was the highest at 4 Gy irradiated group. The germination rate of 80$\sim$90% germinative seed was the highest at 4 Gy irradiated group. The germination rate of 70$\sim$80% and 80$\sim$90% germinative seed at 4 days after sowing was increased 66% and 26% at 4 Gy irradiated group, respectively. In the case of pumpkin, the germination rate of 70$\sim$80% and 80$\sim$90% germinative seed was increased at 2 Gy and 8 Gy irradiated group, respectively. Effect of the low-dose gamma radiation on the early growth was enhanced depending on their germination enhancement. Especially, it was the highest at 2 Gy irradiated group of 70$\sim$80% germinative seed of pumpkin. Catalase activity of bottle gourd was increased at 4 Gy irradiated group. Catalase and peroxidase activity of pumpkin were increased at 2 Gy and 8 Gy irradiated group. These results suggest that the germination, early growth and physiological activity of bottle gourd and pumpkin seeds could be promoted by the low dose gamma radiation.

• Korean Journal of Plant Resources
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• v.14 no.2
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• pp.175-181
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• 2001

Dormancy of intact zoysiagrass seeds hinders its seed propagation in which presowing seed treatment must be done to overcome it. The study was done to remodel the presowing treatments of zoysiagrass seeds by determining the treatment effects of seedcoat softening, prechilling, drying and combined light treatment with them or during germination stage. Seedcoat softening with different chemicals (NaOH 20%, KOH 20%, $H_2SO_4\;8M, acetone 20%) and periods (10, 30, 60 min.), prechilling with different periods at 3$^{\circ}C$, and drying with 4 hours at 35$^{\circ}C$ was done. Light sources were also applied with 660 nm red LED light, commercial fluorescent and incandescent light and darkness. Germination test was done in alternative day and night temperature of 35 and 2$0^{\circ}C$ to check the daily germination rates. With seeds treated with NaOH 20% for 30 minutes, red and incandescent light showing similar responses inclined their germination rates compared to dark conditions. Drying resulted in its higher rate than non-drying but fluorescent light treatment forced during drying more enhanced the rate than red light. While mean germination rate considering all the seedcoat softening treatment periods was the greatest in $H_2SO_4$ in comparison with NaOH, KOH and acetone, NaOH treatment for 30 minutes showed the best rate among the all the treatment levels. In the conditions of sowing them to no-mulching field, presowing treatment procedure of zoysiagrass seeds was remodeled: the seedcoat softening treatment with NaOH 20% for 30 minutes was done, washed, and chilled at 3$^{\circ}C$ for 2 weeks before dried under 4 hour fluorescent light illumination at 35$^{\circ}C$.

• Journal of The Korean Society of Grassland and Forage Science
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• v.28 no.4
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• pp.281-288
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• 2008

Seed priming is an useful technique for increasing germination and early establishment of seedlings. In this experiment, the conditions for priming of pasture seeds (tall fescue, orchardgrass, alfalfa and white clover) have been optimized to ensure an early germination and more uniform growth of seedlings. The experiment was conducted in a split plot design with three replications. The main plots consisted of four different priming duration such as 2, 4, 6 and 8 days for grass, and 1, 2, 3 and 4 days for legume. The subplots were consisted of three priming temperature such as 10, 15 and $20^{\circ}C$. Effects of priming duration and temperature were different in all four pasture seeds examined. The germination of primed grass (tall fescue and orchardgrass) was the highest on 6 days in priming duration, whereas that of legume (alfalfa and white clover) was the highest on 2 days. In priming temperature, the germination of primed orchradgrass increased as decreasing temperature, however that of legume increased as increasing temperature. These results suggest that seed priming induced earlier and higher germination for all four pastures tested. However, the degree of priming effectiveness on pasture species depending on the priming duration and its temperature.

• Korean Journal of Medicinal Crop Science
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• v.4 no.2
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• pp.172-177
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• 1996

The influences of testa-removal of seed, partial cutting of embryo, xylene treatment, growth regulator, chemical treatment and low temperature treatment on the seed germination of Lycoris aurea were investigated. The germination rate of the testa-removed seeds was higher than that of the whole seeds, and the seeds treated by testa-removal+xylene was 63% of germination. $GA_3$ was more effective than kinetin treatment, and seeds treated with $GA_3$ 200ppm showed 60% of germination. $KNO_3$ was more effective than KOH treatment, and seeds treated with 0. 1% $KNO_3$ was 76% of germination. The seeds, stored for two months at $5^{\circ}C$, showed the highest germination rate with 93%

• Korean Journal of Environmental Biology
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• v.30 no.3
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• pp.280-285
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• 2012

We investigated germination rate of Zostera marina and Phyllospadix japonicus, which are the most two abundant seagrass species of Korea, in related to light, salinity and temperature. Light had no significant effect on Z. marina germination, but it promoted P. japonicus germination. The highest germination of Z. marina appeared in 0 psu, and that of P. japonicus appeared in 15 psu. The optimum water temperatures for germination of Z. marina and P. japonicus were $5^{\circ}C$ and $15^{\circ}C$, respectively. These differences of optimum germination requirements of Z. marina and P. japonicus were probably caused by the difference of the habitat environment of the two seagrass species. Since few data exist concerning germination of Korean seagrasses, this study provides valuable information for the conservation of seagrass habitats in Korea.

• Korean Journal of Medicinal Crop Science
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• v.1 no.2
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• pp.104-108
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• 1993

This experiment was conducted to obtain the basic information for the increase ofgermination percent by the treatment of stratification, soaking and $Gibberellin(GA_3)$ in Angelica gigas Seeds caltivated in 1989. The germination percent was increased by 30% with stratification, and the effect of low temperature did not differ significantly. The optimum soaking temperature and periods were found to be 4days at $20^{\circ}C\;and\;6dys\;l0^{\circ}C$ of water temperature. When exchanged water every day during soaking period, inhibitors were more extracted than non-exchange one. The exogenous application of $GA_3$ also increased germination percent about 20% campared with control, and the reasonable level was 2ppm in soaked seed and 5ppm in non-soaked seed.

• Korean Journal of Medicinal Crop Science
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• v.11 no.5
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• pp.347-351
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• 2003

This experiment was carried out to study the optimal chilling period for breaking the physiological dormancy of dehisced E. senticosus seeds and to investigate the critical seeding date in Kangwondo. Storage at $5^{\circ}C$ for 85 days was most effective in breaking dormancy of dehisced seeds, but didn't germinated synchronously. Only 28.1% of undehisced seeds germinated after 125 days of low temperature storage. For improving seedling survival rate in the field, 50% shading was more effective than 30% shading. Delayed seeding date resulted in decreased seedling fresh weight, dry weight, leaf area and root length, but seeding date has no significant affecte on stem length.