• 아시안잔디학회지
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• 제24권2호
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• pp.97-105
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• 2010

본 연구는 국내 해안 및 도서지역에 자생하고 있는 한국잔디류를 지역별로 수집하여 형태적 특성 및 지역별 변이 정도를 알아보고자 수행되었으며, 수집된 유전자원 보존 평가할 수 있는 체계를 확립하는 것이 목적이다. 16개시 군 단위에서 159개체 자생 한국잔디를 수집하였으며, 이들의 초장, 엽폭, 엽장, 엽각도, 종자길이, 종자폭, 종자길이와 폭의 비 및 화수당 종자수 등의 형태적 특성을 조사하였다. Z. japonica류, Z. sinica류, Z. macrostachya류, Z. matrella류 등은 수집된 지역에 따라 초장, 엽장, 엽각도, 화수당 종자수 등에서 큰 변이를 보였다. 반면에 엽폭, 종자길이, 종자폭, 종자길이와 폭의 비율 등에서는 큰 변이를 보이지않았다. 중간적 형태를 보이고 있는 hybrid zoysiagrass류는 조사 형질 간에 다양한 변이를 보이는 것을 확인할수 있었다. 상기 형태적 특성 조사 결과 및 수집된 유전 자원들은 앞으로 고품질 잔디육종을 위한 귀중한 자료로 활용가치가 높다고 판단된다.

• 아시안잔디학회지
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• 제6권2호
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• pp.99-111
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• 1992

국내 골프장에 식재된 bentgrass (Agrostis palustris Huds), zoysiagrass (Zoysia japonica Steud) 및 Kentucky bluegrass (Poa pratensis L.)에 잎마름증상(yellow patch)을 나타내는 병반 부위에서 병원균을 분리ㆍ동정한 결과 2핵성인 Rhizoctonia cerealis로 동정되었다. 병원균은 잔디의 관부와 엽조직을 침해하였으며, 병징은 bentgrass의 경우 1m 내외의 둥근 고리모양의 병반을 형성하고, 병반 가장자리의 잔디잎은 초기에는 붉은색을 띠며 병이 진전됨에 따라 갈변하였다. Zoysiagrass에는 직경 30~40cm의 근사원형의 병반이 봄철 맹아시기에 발생하고, 병반 부위에서는 잔디가 맹아되지 않았다. 맹아된 잔디에는 부정형의 볏짚색 반점이 생기면서 고사되었다. Rhizoctonia cerealis의 균사직경은 2.5~6.3$mu extrm{m}$(평균 3.8$\mu\textrm{m}$)이었으며, 균사는 담황색을 띠고, 균총의 색은 밝은 갈색을 나타냈다. Monilioid cell 크기는 5.8~12.5$\times$l3.8~37.5$\mu\textrm{m}$였으며, 배지상에서 형성된 균핵의 크기는 0.2~2.0mm, 균핵의 색은 처음에는 흰색을 띠다가 성숙해가면서 갈색을 나타냈다. 온도에 따른 균사의 생장은 23$^{\circ}C$에서 가장 양호했다. 병원성 검정 결과 분리균간에 병원성에는 다소 차이가 있었다.

• Weed & Turfgrass Science
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• 제6권2호
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• pp.130-135
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• 2017

본 연구에서는 우리나라의 지역별 묘지 잔디 관리 실태를 조사하였다. 인터넷 포털 사이트에 등록된 묘지 관리 대행 업체, 산림조합중앙회, 농협(단위 농협)으로부터 묘지관리에 대한 정보를 직접 받거나 설문을 통해 자료를 얻은 다음 정리, 분석하였다. 조사한 모든 지역에서 개인 및 가족 묘지는 $66m^2$ (20 평)을 기준으로 관리되었다. 묘지 관리는 연 1~5회 이루어졌고, 1회 관리(벌초)가 가장 많았으며, 횟수가 늘어날수록 관리 비용도 높아졌다. 벌초는 주로 추석 직전에 이루어졌다. 벌초 비용은 지역별로 경기도가 가장 높았으며, 전라도가 가장 낮았다. 산림조합중앙회와 농협 자료를 토대로 벌초 대행은 2013년부터 2015년까지 해가 갈수록 의뢰 횟수는 늘었고, 가격도 높아지는 경향이었다. 연도에 관계없이 경남 > 경북 > 전남 순서로 의뢰 횟수와 금액이 많았다. 벌초의 의뢰는 의뢰자가 묘지로부터 멀리 살기 때문인 이유가 대부분이었다. 실태조사에 따르면, 봉분의 방향은 매우 다양하였다. 묘지의 잔디는 들잔디(Zoysia japonica)였으며, 시도별 묘지의 잔디 밀도는 35.4~71.9% 범위였다. 많은 묘지에서 잔디 밀도가 낮은 이유는 잡초나 낙엽 등에 대한 주기적 관리가 미흡했기 때문으로 조사되었다. 향후 묘지 잔디 관리에 대한 추가적인 연구가 필요할 것으로 판단된다.

• 아시안잔디학회지
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• 제2권1호
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• pp.41-48
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• 1988

Research was conducted to obtain easy and secure methods for promoting germination of Korean lawngrass (Zoysia japonic a Steud.) seed. The effect of sodium hypochiorite (NaOCl) treatment on germination of seeds was compared with that of potassium hydroxide (KOH) treatment under conditions of duration of seed storage after harvest and temperature of treatment. Emergence of seedlings from soil and micro-flora infection rate among seed treatments were investigated. 1. The promotion of germination was much more evident in seeds treated with 4% NaOCl for 8 and 10 hours than in seeds treated with 25% or 30% KOH for 30 and 40 minutes. Longer durations of storage before seed treatment in KOH than in NaOCl were required to initiate enough germination. 2. Differences in temperature of treatment with NaOCT did not have much influence on germination of seeds and treatment temperature of 15˚C was better than that of 200˚C and 300˚C for promoting germination. But seed treatment with KOH significantly promoted germination with increasing temperature of treatment from I 5˚C to 20˚C and 30˚C. 3. GA$_3$ treatment enhanced germination in NaOCl-pretreated seeds at early stage of imbibition and in-creased about 10% germination after 10 days of imbibition in KOH-pretreated seeds. 4. NaOC1 treatments significantly decreased the rate of the infection of microflora in seed samples and enhaced emergence of seedlings from soil compared with KOH treatment. 5. NaOC1 treatment had advantage over KOH treatment with respect to ease of preparing, securing and handling in stimulating germinating of Korean lawngrass seeds.

• 아시안잔디학회지
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• 제3권1호
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• pp.5-12
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• 1989

Tiller numbers per Unit area were increased as plant density heightened followed by little difference in tiller number in 110 days after transplanting(ll0DAT), this being caused by the immediate increment of tiller since' 90DAT During the growth period, the greatest number of green leaves per unit area was attained in 90DAT of both 160-density and 200-density plots, and in l00DAT of 40-, 80-, and I 20-density plots. Thus, the period to reach the maximum green leaf number with the high plant density was earlier than with the' low plant density. The increment of plant density increased the DM weight of ahoveground part and, with 40-densitytreatment. DNI weight was increased 6.1 times as much up to 110DAT as up to 7ODAT but 2 to 2.9 times with other ehe'nsity treatments. The' rate of increase in stolon length was greatest at the period between 80 and 90DAT when DM weight of stolon showed a large increment. Meanwhile, the average number of stolon was 1.7 at 70DAT but was increased up to 10 at 110DAT probably due to accelerative appeance of Ist stolon branch since 8.0DAT. DM weight of stolon was found to exceeded that of root after 90DAT Thus it was concluded that, when turfs is estahlished from sprig. it may be desirable for first mowing practice to be made at least within l00 days after planting.

• 아시안잔디학회지
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• 제12권4호
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• pp.211-220
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• 1998

Cellulose-degrading fungi were idenfied as Rhizoctonia solani AG2-2(IV), T. harzianum and C. cochliodes. Rhizoctonia solani AG2-2(IV) grows better in the acidified media of pH 4 and 5 than pH 6 and 7. Mycelial growth of T. harzianum and C. cochliodes was also higher in pH 4 and 5 than in pH 6 and 7. In order to relate the above findings to nutrient utilization, mycelial growth of R. solani AG2-2(IV) are evaluated with various carbon sources. R. solani AG2-2(IV) grows well in the order of mannose, cellobiose, glucose, xylose and arabinose. However, mycelial dry weights of T. harzianum were 98.7, 78.0, 72.3, 43.7 and 32.3mg in glucose, mannose, cellobiose, xylose, and arabinose, respectively. Mycelial dry weight of C. cochilodes was 118, 65, 57, 49, and 16mg in mannose, cellobiose, xylose, glucose, and arabinose, respectively. Result of cellulase assay of R. solani AG2-2(IV) and soil fungi was reffered as, R. solani AG2-2(IV) produced more cellulase on CMC substrate than on CEL and secretes more enzyme in floated condition than in water-immersed condition. T. harzianum secreted less amount of cellulase than R. solani AG2-2 and C. cochliodes. T. harzianum produced no enzyme on CEL under water-immersed condition. C. cochliodes produced similar amounts of cellulase on either CMC or CEL under both water-immersed and floated condition.

• 농업과학연구
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• 제40권2호
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• pp.115-121
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• 2013

Polymorphic bands of two fine-leaf zoysiagrass mutants (CNU 70-1, CNU 70-2) induced via a gamma-ray irradiation on seeds of Zoysia japonica were obtained by using randomly amplified polymorphic DNA (RAPD) primers. The genotype-specific fragments were then converted into PCR-based sequence characterized amplified region (SCAR) markers, which are now amenable to detecting them among other zoysiagrass species widely noticeable in Korea. The CNU 70-1-specific primer set amplified about 900 bp successfully, while the CNU 70-6 marker produced the expected 1,500 bp band, by which those markers were nominated by CNU 70-1_900 and CNU 70-6_1500 SCARs, respectively. The developed SCAR markers can be an applicable tool in sod industry where illegal appropriation hampers breeder's right and profits due to the turfgrass plant vegetatively propagating.

• 아시안잔디학회지
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• 제8권1호
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• pp.1-11
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• 1994

Studies were conducted to evaluate the effect of priming and preimbibition on gerraination of unscarified and KOH-scarified zoysiagrass (Zoysia japonica Steud.) seeds, respectively. Germi-nation percentages at 35˚C of seeds primed in $KNO_3$ and Ca($NO_3$)$_2$ were significantly higher than that of untreated seeds. The optimum conditions for priming unscarified seeds were in aerated $KNO_3$ solution at O4 M for 4 days at 20˚C. No additional benefit of $GA_3$ on increasing germination was not found in seed priming with solution of $KNO_3$ + $GA_3$ or in seeds preimbibed with $GA_3$ after priming. Scarified seeds preimbibed with distilled water(DW) for 4 days at 20˚C germinated higher and with fewer days to 50% of total germination(T 50) than untreated seeds. Preimbibition with $GA_3$ solution at 50 ppm for 4 days at 5, 10, 15 and 20˚C enabled up to 97% of seeds to germinate and reduced days to T 50 about 1.1 to 1.2 days at 35˚C Especially, seeds preimbibed with $GA^2$˚$_3_2_1$$\times$ had greatly higher germination and lower T 50 than untreated or DW-preimbibibed seeds at 30˚C, which is inadequate to germination in general. Preimbibed seed performance was unchanged after storage at room temperature for 50 days. Seeds preimbibed with GA $_3$ had higher rate of seedling emergence and faster growth of shoot than untreated seeds after sowing at 30˚C in growing medium in growth chamber.

• 한국잡초학회지
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• 제31권2호
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• pp.199-204
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• 2011

본 연구는 예초 직후에 prohexadione-calcium을 처리하여 잔디의 생장 상태를 조사하였다. 한국잔디로 조성된 잔디밭이나 골프장을 효과적으로 관리하기 위하여 한국잔디의 예초 직후 prohexadionecalcium의 농도를 달리하여 엽면 처리한 결과 무처리와 비교하여 잎의 생장이 현저히 감소되는 것으로 나타났으며 prohexadione-calcium의 1회 처리로도 그 효과가 처리후 50일까지 잎의 생장이 46~50%정도 감소되는 것으로 나타났고, 엽폭도 처리농도가 높을수록 무처리에 비하여 좁아졌다. Prohexadionecalcium 처리후 건물중의 변화를 보면 처리후 2주후 부터 무처리에 비하여 현저하게 감소하는 것으로 나타났는데, 처리 농도가 높을수록 건물중이 작았으며 처리 40일까지도 건물중의 증가가 무처리에 비하여 유의하게 감소하는 것으로 나타났다. 또한 엽색도는 prohexadione-calcium의 처리구가 무처리구에 비하여 높았다.

• 원예과학기술지
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• 제30권6호
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• pp.635-641
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• 2012

In Korea, slurry composted and biofiltered (SCB) liquid fertilizer is produced through the composting and biofiltering of animal waste. An appropriate guidelines involving proper treatment of SCB liquid fertilizer on turfgrass should be considered. An experiment was conducted to determine the optimum application amount, timing, and frequency of SCB liquid fertilizer for Zoysia japonica 'Millock'. The SCB liquid fertilizer was applied in low, medium, and high amount (N at 15, 25, and 40 $g{\cdot}m^{-2}$ per year in 2010, and 10, 20, and 40 $g{\cdot}m^{-2}$ per year in 2011, respectively) and treated during the growing season or dormancy period. During the growing season, SCB liquid fertilizer was applied twice or four times. The greatest improvement in turf quality for both years was in SCB plots applied four times with N at 40 $g{\cdot}m^{-2}$ per year during the growing season (SH4). This treatment exhibited turf color retention in the fall, and enhanced clipping yield during the growing and fall seasons. SCB plots with four times during the growing season (SL4, SM4, and SH4) exhibited higher shoot density relative to the same amount of other SCB treatments. Plots treated during the dormancy period also showed a high turf color index during the next growing season in 2011. The results indicate that SCB with high amount up to N at 40 $g{\cdot}m^{-2}$ per year applied four times during the growing season and dormant application produced high turf quality and growth, and could be recommended as an optimum application guide.