• Korean Journal of Plant Resources
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• v.13 no.3
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• pp.195-201
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• 2000

This study was conducted to investigate the suitable conditions for seed germination of Rosa davurica PALL. In the characteristics of the fruit and seed of Rosa davurica, fruit length and width was 1.3cm and 0.9cm , respectively, and seed number was eighty-nine. Artificial and low temperature storage at 4$^{\circ}C$ increased the rate of split achene pericarp until 46.6% and storage at 15$^{\circ}C$ incubator decreased the rate of split achene pericarp (10.5%). The rate of seed germination of split achene pericarp in control at 15$^{\circ}C$ was 90% and of non-split achene in GA$_3$100ppm at 15$^{\circ}C$ was 36.8%. Average germination day of split achene pericarp seeds in GA$_3$150ppm at 2$0^{\circ}C$ was 4.2 days and non-split achene pericarp in GA$_3$100ppm at 2$0^{\circ}C$ was 7.3 days. Seed germination was not different between various concentrations of GA$_3$ treatments in split achene pericarp seeds but the rate of germination was more reduced in high concentration of 200ppm. Only the treatments of GA$_3$ was increased germination rate at 4$^{\circ}C$ and immature seed of Rosa davurica.

• The Korean Journal of Ecology
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• v.25 no.2
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• pp.93-100
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• 2002

In order to analyze the life cycle of A. artemisiifolia var. elation dormancy and some environmental factors inducing germination of the seeds were examined. The results were as follows : Dormancy of fertile seeds was broken in part within a month after seed collection in case of adequate moisture and alternating temperature was also effective in breaking dormancy. The temperature range, which allow germination was 12℃ ∼ 32℃. Optimum temperature for germination was 24℃. The seed of A. artemisiifolia var. elatior was light-independent. The difference of storage period appeared to have no particular effect on the viability of seeds at any time during the 9-month storage period. In the increasing temperature(IT) regime, A artemisiifolia var. elatior seeds started to germinate at 16℃, showing the higher temperature the greater germination rate, the final germination percentage was 99.34%. On the other hand, in the decresing temperature(DT) regime, seeds began to germinate at 20℃ with the 1.34% germination. An induced dormancy occurred at 12℃ making the 5.34% fecal germination in the DT regime. Low temperature was more effective to break dormancy than higher temperature Seeds of A. artemisiifolia var. elatior seems to be germinated in mid to late autumn or germination delayed until following spring. The above results suggest these variation of germination response in diverse environmental factors seems to be a physiological strategy to maintain their existence and to reproduce in the extreme thermal variation.

• Korean Journal of Plant Resources
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• v.25 no.1
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• pp.7-13
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• 2012

This study was conducted to determine the effects of scarification temperature, and sulfuric acid treatments on seed germination of white lotus collected from the Muan districts, Jeonnam in Korea. Without scarification, white lotus seeds were not germinated at all at 15 days after seeding. However, seeds sacrificed at basal parts showed 100% germination rate at $25^{\circ}C$ 6 days after seeding. All the seeds floated (0.90 g) and soaked (1.18 g) in the water were completely germinated. Especially, the lotus seeds soaked in the water at $25^{\circ}C$ showed high germination rate. Seeds treated with 80% sulfuric acid for 40-160 hours were germinated completely within 6 days after seeding. No difference in seed germination rate of white lotus stored up to 0, 12 and 24 months after harvest was observed. Overall results would be useful means for propagation and production of white lotus.

• Korean Journal of Plant Resources
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• v.20 no.5
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• pp.481-489
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• 2007

Present experiments are conducted to study the seed viability and optimum germination temperature of Polygonatum odoratum var. pluriflorum that is known to have low germination ability and long germination duration. To enhance germination rate, various growth regulators and inorganic salts were employed. Low germination rate was obtained with 4 year old seeds, but not with $1{\sim}2$ year old seeds. The seeds germinated very well under $22{\sim}25^{\circ}C$ and germinated speed was rapid. Especially, $1{\sim}2$ year old seeds germinated at $25^{\circ}C$ showed $70{\sim}71.2%$ germination rate. Priming treatments using $GA_3$, IAA, NAA, kinetin, $KNO_3$, $KH_2PO_4$, $Ca(NO_3)_2$ were effective compared to control except BA. 1 year old seeds treated with $GA_3$ 0.5 mM and IAA 1 mM showed 96% and 93% germination rate, respectively.

• 한국약용작물학회:학술대회논문집
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• 2011.09a
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• pp.196-197
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• 2011

• Asian Journal of Turfgrass Science
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• v.3 no.2
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• pp.73-76
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• 1989

To establish a lawn Zoysia japonica Steud with seeds a win of experiments were conducted for the investigation of seedling root system. The results m summarized m follows; Zoysia japonica and maize elongated mesocotyle in germinating stage. but rye and barley did not. The mesocotyle of Z. japonica seed pushed the elongating coleoptile up throngh the soil, hence could emerge from more deeply planted. The crown roots of Z japonica originated from the coleoptile node. The crown roots of barley originated from the first foliage led node.

• Monthly Duck's Village
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• v.62 no.8
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• pp.50-53
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• 2008

페킨종은 중국이 원산으로 미국과 영국에서 개량되어 현재 세계 각국에서 널리 사육되고 있는 난육겸용종의 대표적인 품종이다. 페킨종을 종자로 이용하여 육종한 육용개량 좋은 체구가 크고 발육도 빨라 현재 전세계에서 오리고기 생산용으로 많이 사육되고 있다. 페킨종 오리의 생산은 상업용 가금산업 중에서도 고도로 전문화된 분야이다. 종오리의 번식력은 육계나 산란계들 사이에서도 굉장히 높게 나타난다. 그러나 페킨종 오리의 경우 사육시 상당히 특별하고 흥미롭기 때문에 관리상의 필요한 점이 굉장히 많다.

• Proceedings of the Korean Society of Grassland Science Conference
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• 1999.06a
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• pp.79.2-80
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• 1999

우리나라 기후에서 이탈리안라이그라스의 안전 재배지역을 한강이남 전역으로 확대하기 위하여 기존 품종을 강원도 둔네(1월 최저평균기온 -13~-14$^{\circ}C$ 지역)에 파종하여 월동한 개체를 선발하고 무성번식으로 증식하여 내한성 계통을 조성한 후 출수기가 유사한 5개의 계통을 polycross 삼각배치법으로 종자를 합성하였다. 1996년부터 1998년까지 수원, 남원 운봉, 경기 연천지역에서 외국으로부터 도입품종과 축산기술연구소에서 육성한 품종에 대한 이탈리안라이그라스의 내한성을 검정하여 내한성이 우수한 화산 101호를 육성하였다.(중략)

• Journal of Wetlands Research
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• v.14 no.1
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• pp.1-9
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• 2012

The effects of elevated $CO_2$ and temperature on the phenological and reproductive characteristics of Phytolocca insularis were examined in ambient condition (control) and green house situation (treatment), 700 ~ 800 ppm $CO_2$ and $2^{\circ}C$ elevated temperature, from March 2010 to April 2011. Phenological responses such as foliation, inflorescence formation, flowering, fruit appearance, fruit maturing of P. insularis grown in the treatment were 6~ 20 day faster than in the control. The percent of fruit set, number of fruit and seed per shoots, weight of fruit and seed per shoots of P. insularis were higher in control than in the treatment. The number of inflorescence per shoots showed no difference between in the control and in the treatment. These results demonstrated that the reproductive response of P. insularis might be negatively influenced by increased $CO_2$ concentration and elevated temperature.

• Korean Journal of Plant Resources
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• v.36 no.4
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• pp.390-401
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• 2023

The purpose of this study was to identify the propagation characteristics of Diabelia spathulata (Siebold & Zucc.) Landrein through seeding and cutting methods. The seed germination rate was meager (0.22~3.56%). In hardwood cutting, the highest rooting rate was 36.1% in sand + perlite (2:1) and 37.8% in 1000 PPM of IBA pre-treatment. Softwood cutting showed the highest rooting rate when the cutting diameter was 3 to 5 mm and the cutting length was 7 to 8 cm. In particular, the highest rooting rate of 80% was observed in the sand among the 8 cultivation media treatments. In the case of root cuttings, the rooting rate was 83.3~96.7% in all cultivation media. The highest rooting rate was observed when the diameter of the cutting was 7 to 8 mm, and the length of the cutting was about 10 to 11 cm. Among cutting methods, root cutting showed the highest rooting rate. Division showed a 100% rooting rate regardless of size or growth status. For Diabelia spathulata (Siebold & Zucc.) Landrein, propagation by cuttings was more efficient than seeding. However, Further research on the morphophysiological dormancy and dormancy break of seeds is needed for seed propagation.