• 한국자원식물학회지
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• 제28권2호
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• pp.253-258
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• 2015

눈잣나무는 우리나라에서 산림청 지정 멸종위기종으로 구분되어 있다. 눈잣나무는 설악산 대청봉 지역(해발고 1550–1700 m)에만 제한적으로 분포하고, 대부분의 구과가 조류와 설치류의 피해를 받기 때문에 종자를 확보하기 어렵다. 본 연구는 눈잣나무의 현지외보존림 조성을 위하여 습사, 예냉 및 GA₃ 처리가 눈잣나무 종자발아에 미치는 영향을 알아보기 위해 수행되었다. 눈잣나무 종자에 대해 습사 및 예냉처리를 각각 1, 2, 3, 4, 5개월 처리하고 GA₃는 0, 100, 500, 1,000, 2,000, 3,000 ㎎/L 농도로 처리한 뒤 페트리디쉬에 치상하였으며 25℃의 광조건에서 실험하였다. 종자 발아율, 평균발아일수, 발아속도를 조사한 결과, 습사와 예냉처리는 모두 종자 발아를 향상시키는데 효과적으로 나타났다. 그러나 두 저온처리의 방법에 따른 차이는 나타나지 않았다. 각각의 처리에서 처리기간이 길어짐에 따라 종자 발아가 향상되었으나, 3개월 이상의 처리에서는 종자 발아의 향상이 통계적으로 유의하게 나타나지 않았다. GA₃ 처리에서도 눈잣나무의 종자 발아가 효과적으로 향상되었는데, 100 ㎎/L 처리 조건에서 발아율이 79.0%로 나타났다. 그러나 GA₃ 고농도 처리조건(2000 ㎎/L 이상)에서는 오히려 종자 발아가 감소하였다. 결론적으로 3개월 이상의 습사처리와 GA₃ 100 ㎎/L 처리가 눈잣나무의 종자의 발아향상에 적절한 방법으로 나타났다.

• 한국초지조사료학회지
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• 제15권4호
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• pp.265-273
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• 1995

Seeds of chicory were collected and selected with good germination, emergence and productivity. To develop chicory as a new forage crop seeds were primed with polyethylene glycol (PEG 6000) and coated with some chemicals, and tested in laboratory and field. The results obtained are summarized as follows: 1. Among the seed lines collected, PUlgAH, PU21TH, PU37CH and PU30TK were germinated more quickly and took less time for germination than the others. 2. PUI8AH was the best in emergence and growth although PU21TH showed superior germinative ability among the lines collected. 3. Chicory seeds primed with 20~25% PEG solution for three days at $10^{\circ}C$, or the seeds treated with 25% PEG solution at $15^{\circ}C$ regardless the treatment period showed good germination performances. 4. Osmotic priming with PEG accelerated the germination of chicory, but not in the field. 5. Coated seeds geminated more slowly in Petridishes but showed superior emergence and growth to those of primed or untreated seeds. Treatment 3 showed the best performances in pot experiment. 6. Coated seeds showed remarkable increase in establishment and dry matter yield especially in sod sowing compared to the other sowing method. 7. Most nutrient contents except iron and manganese of chicory were much higher than those of mixed pasture .

• Journal of Forest and Environmental Science
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• 제35권4호
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• pp.223-231
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• 2019

Castanopsis indica (Sil Batna) is an ecologically valuable multipurpose indigenous tree species of Bangladesh. Considering its high value but poor natural regeneration due to seed dormancy, the authors conducted an experiment at the Institute of Forestry and Environmental Sciences Chittagong University (IFESCU) during 2012-2013 to find out effective pre-sowing treatments. Ten pre-sowing seed treatments were applied on mature, even-sized seeds namely-control; sandpaper rubbing; nail clipping; immersion in normal water (at room temperature: 24℃) for 24 hrs., 48 hrs. and 72 hrs.; immersion in hot water (80℃) for 1 minute; soaking in 10% dilute H₂SO₄; soaking in 10% HCl for 5 minutes; and sowing in propagator house. Seeds sown after sandpaper rubbing at the distal end revealed best performances by providing highest germination percent (66.7%), germination energy (30%), germination index (0.17), germination rate (0.0145), germination value (30%) and plant percent (66.7%) within shortest period (38 days). The treatment also produced most vigor seedlings with 20.9 cm shoot height, 15 node number, and largest leaves (11.1 cm×2.9 cm). Hence, it is recommended to adopt sandpaper rubbing method for maximum germination and quality seedlings.

• Journal of Forest and Environmental Science
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• 제38권4호
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• pp.284-289
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• 2022

This study was conducted to determine the seed dormancy types of Sambucus racemosa subsp. pendula Nakai and S. williamsii Hance. Low temperature stratification (1, 2, 3, 4 months) and GA3 treatment (1,000 mg/L) were performed on seeds to determine the type of seed dormancy. After the treatment, seeds were placed on a petri dish at 25℃ under light conditions. The germination rate and mean germination time were investigated. Results showed that cold stratification was effective in breaking the dormant state of the seed in both species. In the low temperature stratification treatment, the seed germination performance was improved as the treatment period was prolonged. Gibberellin treatment was effective in breaking the dormant state of S. racemosa subsp. pendula without low temperature stratification. However, S. williamsii did not break the dormant state of the seed by gibberellin treatment without low temperature stratification treatment. In the gibberellin treatment, germination performance was improved according to the low temperature stratification treatment period. As a result of this study, the seeds of S. williamsii have both an intermediate complex and a deep complex morphophysiological dormancy (MPD). In comparison, it was found that the S. racemosa subsp. pendula had intermediate composite MPD.

• The Korean Journal of Ecology
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• 제19권2호
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• pp.125-139
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• 1996

The relationships between environmental factors and the establishment and growth of oak seelings were studied in the greenhouse. The early seedling performances of three oak species (Quercus mongolica, Quercus serrata, Quercus variabilis) were compared. Mean seed weight was the biggest in Q. variabilis, and the smallest in Q. serrata, and the germination rate was higher in Q. variabilis than in Q. mongolica and Q. serrata. The germination rate was significantly affected by seed weight class in Q. serrata, but not in Q. mongolica. Emergence of oak seedlings was similar in all three oak species, and especially the first leaf emergence increased about twenty days after germination. An experiment was designed using three environmental factors (light, soil moisture, fertilizer) to compare the response of the three oak species. Light and soil moisture significantly affected the seedling height growth of Q. variabilis, but the effect was marginal in Q. mongolica and Q. serrata. However, growth of seedling biomass was significant in all three oak species. In contrast, fertilizer did not affect seedling growth of any of the oak species. Q. variabilis is expected to grow well in large gaps because it is very sensitive and responds well to high light and high moisture conditions. Q. mongolica and Q. serrata are relatively tolerant to shade but may need gaps for the seelings to grow into saplings.

• 한국토양비료학회지
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• 제44권5호
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• pp.959-961
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• 2011

Manure-based composts can have detrimental effects on the agricultural lands and crops if they are applied without proper stabilization process. Composting is well-known method for the stabilization of manure-based composts and the extent of composting could be examined by maturity test. Among various methods to examine compost maturity, the performances of two mechanical methods (Solvita and CoMMe-100) were examined and the test results were compared with seed germination test. The mechanical methods are considered to be simple and relatively objective. Also they are cost- and time-efficient. Ten commercially available composts collected in Korea were used for this study. Basically, the maturity determined with these mechanical methods was in good agreement with the seed germination test. However, it appeared that the index levels of compost maturity indicated more maturity by CoMMe-100 than Solvita for the same compost. The differences between maturity index levels determined by both methods were able to be minimized through extending the reaction time for CoMMe-100 and adjusting index level for maturity determination in the standard color chart.

• 한국산림과학회지
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• 제83권4호
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• pp.505-511
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• 1994

리기테다 소나무 종자(種子)에 삼투압처리 및 피복(被覆)처리를 하여 균일(均一)한 발아(發芽)와 유묘생육(幼苗生育)을 촉진(促進)하기 위하여 이들 처리(處理) 종자(種子)의 발아(發芽)와 유식물(幼植物) 생육(生育)을 비교(比較) 검토(檢討)하였다. 1. Polyethylene glycol(PEG) 처리농도가 높아질수록 총발아율(TGP)도 높아졌으며 $10^{\circ}C$보다는 $15^{\circ}C$나 $20^{\circ}C$에서 총발아율이 향상되었다. 2. PEG처리기간이 길수록 또한 처리농도가 높을수록 발아속도(GR)가 양호하였으며, 처리농도와 온도간에는 상호 상관관계가 인정되지 않았다. 3. 최대 발아속도(MGR)는 PEG처리기간이 길수록 높았으며, $20^{\circ}C$에서 더욱 뚜렷하게 나타났다. 4. $20^{\circ}C$에서 12일간 PEG 처리시 약 2일 정도의 발아기간(發芽期間) 단축효과가 있었다. 5. PEG 처리는 저수분상태(低水分狀態) 하에서도 발아가 양호하였으며, 피복처리(被覆處理)된 종자는 약해(藥害)로 인한 발아(發芽) 장애현상(障碍現象)이 나타났다. 6. 조파(條播)와 직파(直播)간에는 건물생산량(乾物生產量)에 큰 차이가 있었으며, PEG 처리가 가장 양호한 성적을 보여 주었다. 적당한 토양수분 상태(포장용수량의 약 75%)보다 건조한 토양조건(포장용수량의 약 50%)에서 피복처리효과가 더욱 뚜렷하였다.

• Journal of Forest and Environmental Science
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• 제36권1호
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• pp.1-6
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• 2020

This study was conducted to investigate the effect of different pre-sowing treatments of seeds on germination and growth performance of native threatened tree species Quercus gomeziana A. Camus at the nursery of Chittagong University, Bangladesh. Furthermore, seedling growth attributes under different doses of fertilizer (urea) was also experimented to find the best dose of fertilizer on this tree species at the nursery stage for better field level growth. Seeds were placed to six pre-sowing treatments e.g. control (PT₀), treated with sand paper rubbing (PT₁), nicking (PT₂), seeds immersed in cold water for 48 hours (PT₃), seeds immersed in cold water for 7 days (PT₄) and seeds sown at propagator house with increased temperature (PT₅). It was found from the study that germination was started earlier (at 31 days) in treatments sand paper rubbing (PT₁) and nicking (PT₂). The highest germination percentage (93%) was in PT₁ followed by 86% in seeds immersed in cold water for 7 days (PT₄) and 80% in PT₀ (control). Germination percentage was observed least (63%) in PT₂ even though germination started earlier. For fertilizer dose experiment to seedlings at the nursery level, treatment FT₁: 100 kg/ha (0.33679 g urea/pot/seedling) comparing with other treatments FT₀: 0 kg/ha (Control), FT₂: 200 kg/ha (0.67358 g urea/pot/seedling), FT₃: 300 kg/ha (1.01037 g urea/pot/seedling) showed better performance in case of collar diameter (6.74 mm), number of leaves, shoot dry weight (19.74), total dry weight (28.16 g), total fresh weight (67.96 g), volume index (3904.82), sturdiness (127.69). Finally, it can be concluded that Quercus gomeziana seedlings revealed better performances under the treatment FT₁ in growth and biomass production. Findings of this study will be helpful to take decision on organic fertilizer dose application to seedlings of Q. gomeziana for large scale plantation and conservation of this species.

• 한국산림과학회지
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• 제88권4호
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• pp.485-489
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• 1999

1994년의 참나무류 교잡종자에 관하여 발아율 및 그후의 생육상황을 조사하였다. 저장화분의 교배에서 발아율이 zero인 조합이 많은 경향을 보였다. 2년 후의 생존율 및 묘목의 수고생장은 교배 조합에 따라서 차이가 있었다. 1991년과 1993년의 교배묘의 생육상황을 조사하였고, 5년생 묘목의 생존율은 71~100%, 3년생 묘목의 생존율은 33~100%였다. 교배 조합에 따라서 생존율에 차이가 보였으며, 생장(生長)이 저조한 왜성묘목(矮性苗木)이 많은 조합에서는 고사율(枯死率)이 많았다. Q. aliena를 교배모수(交配母樹)로 한 경우 5년생의 생장(生長)이 가장 우수하였다. 특히 Q. aliena ${\times}$ Q. serrata가 167.9cm(5년생)이고 Q. dentata ${\times}$ Q. aliena는 120.2cm(3년생)으로 생장(生長)이 양호(良好)하였다.

• 한국산림과학회지
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• 제84권1호
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• pp.87-96
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• 1995

새 순(筍)이나 수피(樹皮), 열매 등(等) 식(食) 약용(藥用)으로 이용(利用)하고 있는 화살나무를 비롯한 4수종(樹種)의 종자(種子)에 대하여 포지(圃地) 발아율(發芽率)을 높이는 방법(方法)을 알아보기 위행 화살나무, 차나무, 초피나무의 종자(種子)는 10월(月) 중순(中旬)에서 11월(月) 중순(中旬) 사이에 채취(採取)하여 정선(精選)한 후(後) Pon-Pon, $H_2O_2$, $GA_3$, 종피파쇄(種皮破碎) 등(等)으로 처리(處理)하여 노천매장(露天埋藏)(119일(日)-134일(日))을 하였다가 3월(月) 29일(日) 시험포지(試驗圃地) 파종(播種)하였으며, 남천 종자(種子)는 11월(月) 하순(下旬에) 채취(採取)하여 Growth chamber에서 저장온도(貯藏溫度)($4^{\circ}C$, $25^{\circ}C$, $32^{\circ}C$), 저장기간(貯藏期間)(7일(日), 15일(日), 21일(日))별(別)로 처리(處理)한 후(後) 유리온실(溫室) 내(內)의 파종상자(播種箱子)($55{\times}45{\times}15cm$)에 파종(播種)하여 보관(保管)하던 중(中) 5월(月) 초(初)부터는 노지(露地)에서 관리(管理)하였다. 수종별(樹種別), 종자(種字) 발아촉진처리별(發芽促進處理別)로 발아(發芽) 생장(生長)한 묘목(苗木)을 파종(播種)한 당년(當年) 10월(月) 중순(中旬)에 굴취(掘取)하여 발아율(發芽率)과 유묘(幼苗) 생장(生長)을 조사(調査) 분석(分析)하였다. 종자(種子) 발아촉진처리별(發芽促進處理別) 포지(圃地) 발아율(發芽率)에서 화살나무는 $GA_3$ 처리(處理) 후(後) 노천매장(露天埋藏)한 처리구(處理區)에서 당년(當年) 발아율(發芽率) 67.1%로 일반(一般) 노천매장(露天埋藏) 처리구(處理區) 18.4%보다 높은 발아율(發芽率)을 보여 유의적(有意的)인 발아촉진(發芽促進) 효과(效果)가 인정(認定)되었다. 차나무 종자(種子)는 종피파쇄(種皮破碎)나 $H_2O_2$ 처리(處理) 후(後) 노천매장(露天埋藏)한 처리구(處理區)와 일반(一般) 노천매장처리구(露天埋藏處理區) 간(間)에 뚜렷한 차이(差異)를 보이지 않아 노천매장(露天埋藏) 만으로도 충분한 발아촉진(發芽促進) 효과(效果)가 인정(認定)되었다. 초피나무 종자(種子)의 경우 Pon-Pon 처리(處理) 후(後) 노천매장(露天埋藏)한 처리구(處理區)에서 당년(當年) 발아율(發芽率) 80.3%로 일반(一般) 노천매장(露天埋藏)한 처리구(處理區)의 12.4% 보다 유의적(有意的)인 차이(差異)가 있었다. 남천 종자(種子) $32^{\circ}C$에서 7일간(日間) 저장(貯藏)한 처리구(處理區)가 $4^{\circ}C$에서 7일간(日間) 저장(貯藏)한 처리구(處理區)보다 5개월(個月) 정도 조기(早期)에 발아(發芽)되면서 발아율(發芽率)도 높게 나타났다. 포지(圃地)에 파종(播種)한 종자(種子)의 발아최성기(發芽最盛期)는 화살나무(32일(日))>초피나무(49일(日))>차나무(83일(일))>남천(87일(日)) 순(順)이었다. 포지(圃地)에서 발아(發芽)한 실생묘목(實生苗木) 생장량(生長量)은 종자(種子) 발아촉진처리(發芽促進處理)의 효과(效果)로 발아(發芽)가 빠른 처리구(處理區)에서 양호(良好)하였다. 실생묘(實生苗)의 연(年) 생장시간(生長時間) 중(中)에서 가장 왕성(旺盛)한 생장(生長)을 보인 최대생장(最大生長) 기간(期間)은 화살나무는 종자발아(種子發芽) 후(後) 72일(日) 경(傾)인 6월(月) 하순(下旬)부터 7월(月) 중순(中旬)사이이고, 초피나무는 59일(日)째인 6월(月) 하순(下旬)부터 7월(月) 중순(中旬) 사이였으며 차나무는 54일(日)째인 8월(月) 중순(中旬)부터 9월(月) 중순(中旬)사이로 나타났다.