• The Plant Pathology Journal
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• 제33권1호
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• pp.1-8
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• 2017

Seed dehiscence of ginseng (Panax ginseng C. A. Mayer) is affected by moisture, temperature, storage conditions and microbes. Several microbes were isolated from completely dehisced seed coat of ginseng cultivars, Chunpoong and Younpoong at Gumsan, Korea. We investigated the potential of five Talaromyces flavus isolates from the dehiscence of ginseng seed in four traditional stratification facilities. The isolates showed antagonistic activities against fungal plant pathogens, such as Cylindrocarpon destructans, Fusarium oxysporum, Rhizoctonia solani, Sclerotinia nivalis, Botrytis cinerea, and Phytophthora capsici. The dehiscence ratios of ginseng seed increased more than 33% by treatment of T. flavus GG01, GG02, GG04, GG12, and GG23 in comparison to control (28%). Among the treatments, the reformulating treatment of T. flavus isolates GG01 and GG04 showed the highest of stratification ratio of ginseng seed. After 16 weeks, the reformulating treatment of T. flavus isolates GG01 and GG04 significantly enhanced dehiscence of ginseng seed by about 81% compared to the untreated control. The candidate's treatment of T. flavus GG01 and GG04 showed the highest decreasing rate of 93% in seed coat hardness for 112 days in dehiscence period. The results suggested that the pre-inoculation of T. flavus GG01 and GG04 found to be very effective applications in improving dehiscence and germination of ginseng seed.

• 한국작물학회지
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• 제48권6호
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• pp.424-428
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• 2003

옥수수 신품종 찰옥2호의 안정적인 $\textrm{F}_1$ 종자 생산에 적합한 채종 재배법을 구명하고자 1998-2000년 3년간 시험을 수행하였던 바 그 결과는 다음과 같다. 1. 찰옥2호의 KW7/KW3교배조합은 KW7의 수임능력 부족과 KW3의 화분비산거리가 짧아서 $\textrm{F}_1$종자 생산량이 적다. 2. 찰옥2호의 $\textrm{F}_1$ 종자 생산은 KW3/KW7 조합으로 하고 KW7에 비닐피복하여 모$.$부본을 동시에 파종하며, 재식비율 4:1로 파종하는 것이 가장 효과적이었다. 3. 찰옥2호의 KW3/KW7 교배조합은 KW3의 부패립 발생이 문제가 된다. 따라서 종자의 품질저하 방지와 발아율을 고려하여 출사후 35일에 수확하는 것이 바람직하였다.

• 환경생물
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• 제22권2호
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• pp.265-272
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• 2004

본 연구에서는 산성전리수의 일반적인 생물학적 특성을 간략히 살펴보았다. 직선형 DNA를 산성전리수에서 $4^\circ{C}$와 $25^\circ{C}$에서 약 10분간 반응시킨 결과 각각 40%와 50%의 DNA가 분해되었다. 그러나 산성전리수를 사용한 고온에서의 DNA 증폭반응 실험에서 DNA 분해없이 정상적으로 DNA증폭반응이 일어났다. 산성전리수가 단백질의 안정도에 미치는 영향을 살펴본 결과 증류수에서는 총 7일 동안의 반응시간동안 단백질의 분해가 거의 일어나지 않았으나, 산성전리수에서는 제4일에서부터 단백질의 분해가 본격적으로 일어나기 시작하였다. 산성전리수에서 볍씨를 발아시켜 본 결과 증류수에서와 동일한 발아율을 나타냈으며, 산성전리수는 배양토에서 벼 유묘의 뿌리의 길이와 총 길이를 억제시켰다. 산성전리수는 해양 미세조류의 성장곡선과 세포수에는 거의 영향을 미치지 않았다. 또한 산성전리수는 polyphenoloxidase의 비활성을 약 50% 억제시킴으로써 감자의 갈변을 억제하였다.

• 한국토양비료학회지
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• 제50권2호
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• pp.71-80
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• 2017

This study was conducted to investigate the application effect of Lysobacter antibioticus HS124 (gelatinase and chitinase producing microorganism; GCM) for the improvement of soybean yield and control of stink bug. Our results showed that the yield of GCM-treated soybean increased by 17.0, 20.3, 19.0, and 25.6% in the experimental field sites of Muan-gun, Sunchang-gun, Gwangju 1, and Gwangju 2, respectively, compared to the yield of the soybean obtained by conventional practice treatment (CPT); however in the Gimjae-si, the yield decreased by 10.6%. Results in both pods and seeds $plant^{-1}$ were significantly increased in Gwangju 2 by the GCM cultured broth treatment (GCMT). Ratio of 3 seeds $pod^{-1}$ in Sunchang-gun was statistically significant between GCMT and CPT, however, the result in the other field showed no significance. Germination rate was only statistically improved by GCMT in Gwangju 2 field site. GCMT reduced the appearance of stink bug in all experimental field sites except in Gimjae-si. The soybean seed damage by stink bug was no significance in all of treatments. Therefore, GCMT could improve the productivity of soybean and also control the infestation of stink bug.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.189-189
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• 2017

Salinity is one of the major abiotic stresses that severely affect crop production throughout the world; especially rice plant which is generally categorized as a typical glycophyte as it cannot grow in the presence of salinity. Phenotypic resistance of salinity is expressed as the ability to survive and grow in a salinity condition. Salinity resistance has, at least implicitly, been treated as a single trait. Physiological studies of rice suggest that a range of characteristics (such as low shoot sodium concentration, compartmentation of salt in older rather than younger leaves, high potassium concentration, high $K^+/Na^+$ ratio, high biomass and plant vigour) would increase the ability of the plant to cope with salinity. Criteria for evaluating and screening salinity tolerance in crop plants vary depending on the level and duration of salt stress and the plant developmental stage. Plant growth responses to salinity vary with plant life cycle; critical stages sensitive to salinity are germination, seedling establishment and flowering. We have established a standard protocol to evaluate large rice germplasms for overall performance based on specific physiological traits for salt tolerance at seedling stage. This protocol will help in identifying germplasms which can perform better in the presence of different salinity treatments based on single trait and also combination of different physiological traits. The salt tolerant germplasm can be taken forward into developing better varieties by conventional breeding and exploring genes for salt tolerance.

• 한국잠사곤충학회지
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• 제44권1호
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• pp.9-12
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• 2002

한반도에 자생하는 돌뽕나무(Morus tiliaefolia)의 임성과 재배학적 특성은 다음과 같다. 1. 종자형성률은 46∼80%이며 종자의 발아율은 19∼28%에 불과하다 2. 개화최성기(1994년)는 4월 28일∼5월 3일로서 산뽕나무보다는 늦고 개량뽕보다 빠르다 3. 춘기 동아의 탈포기는 4월 21일∼24일로서 산뽕나무와 개량뽕보다 늦다. 4. 잎은 대형으로 엽형지수 1.05의 폭광성을 나타내며 잎두께는 산뽕나무보다 두껍다. 5.성숙엽의 화학성분은 가용성 무질소물과 조회분이 많고 조단백질, 조지방, 조섬유가 적다. 6. 낮추베기때의 자세는 대부분 전개성이며 가지는 조장형이고 절간장이 길다 7. 추위견딜성과 뽕나무 동고병에 약하다.

• 한국작물학회지
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• 제39권5호
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• pp.473-479
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• 1994

종자가 수분을 흡수할 경우 종자의 내용물이 밖으로 누출되는데 일반적으로 퇴화종자에서 건전종자보다 월등하게 많이 누출되는 특성이 있다. 십자화과 식물의 종자는 형광물질인 sinapine을 함유하고 있어서 수분을 흡수할 경우 퇴화종자에서 다량의 형광물질을 밖으로 배출한다. 이러한 특성을 이용하여 종자를 cellulose로 코팅하여 sinapine을 Cellulose층에 흡착토록 함으로써 퇴화종자를 쉽게 종자 개개의 단위로 선별하는 방법을 개발하였다. 따라서 본 시험에서 국내에 재배되는 십자화과 채소종자에 대해서 이러한 새로운 종자선별법을 이용하여 종자를 선별한 결과 다음과 같은 결과를 얻었다. 1. 십자화과 채소종자의 퇴화종자에서 건전종자 보다 많은 양의 형광물질이 누출되었다. 2. 종자코팅을 통하여 형광종자와 무형광종자를 쉽게 구별할 수 있었다. 3. 형광종자의 비율은 퇴화종자가 많은 품종일수록 높았다. 4. 형광종자를 분리하여 제거하므로써 발아율이 약 5∼35%까지 향상되었다. 5. 무형광종자는 건전한 종자로써 발아율 및 종자세가 무처리종자보다 월등하였고, 형광종자는 대부분 발아하지 않았으며 발아한 묘는 거의가 비정상묘 였다.

• Journal of Crop Science and Biotechnology
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• 제10권4호
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• pp.249-256
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• 2007

A study was conducted to observe the variation and inheritance of agronomic traits and their interrelationship in mungbean. The objective of the study was to compare agronomic traits and hardseed percentage of 268 recombinant inbred lines(RILs) developed from the cross between wild Vigna subspecies sublobata "ACC 41" with the mungbean cultivar "Berken". The RIL population and their parents were evaluated under controlled conditions in a glass house at the University of Queensland, Brisbane, Australia. The results showed significant differences among the RILs and among the parents in all traits under study. Berken had a longer flowering date and a higher seed weight per plant, but less total leaf number and pod number per plant than ACC 41. A germination test between papers revealed that ACC 41 was 100% hard-seeded and did not germinate at all, while Berken germinated up to 100%. Their RILs distributed well between 0 to 100% hardseed. Upon scarification, all hardseed germinated within seven days. Narrowsense heritability estimates of total leave number, hardseedness, pod length, and pod width were highly heritable at 89.9, 98.9, 93.7, and 93.2%, respectively. The heritability of seed weight per plant and number of seeds per plant were lower at 63.1 and 58.4%, respectively. Seed weight per plant showed positive transgressive segregation when compared with ACC 41 and a positive correlation with 100 seed weight. While the number of seeds per pod showed a negative transgressive segregation when compared with Berken and a negative correlation with pod length and pod width. The RILs gave a 1:1 segregation ratio in leaflet shape, growth habit, and growth pattern, indicating that these traits were controlled by a single dominant gene.

• 한국축산시설환경학회지
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• 제15권1호
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• pp.59-68
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• 2009

농업은 작물잔사, 가축분뇨, 음식쓰레기 등의 지역자원을 퇴비화하여 이용하는 순환산업이며, 작물 생육은 빛, 물, 공기, 온도 및 양분 등이 필요하며 유해물질이 없어야한다. 유용미생물처리 음식쓰레기와 계분혼합물 횡형 밀폐원통형 교반방식 퇴비화처리시설에서 얻어진 최종퇴비는 발아율, 산소호흡지수 및 염분농도 등의 수치가 작물 생육에 유해하므로 부적합하였다. 생산된 유용미생물처리 음식쓰레기와 계분혼합물 퇴비를 분석한 결과, 퇴비공정규격, 건물기준 유기물 함량 60% 이상, 유기물대 질소비 50 이하, 탄질비 20 이하를 충족하고, 중금속함량이 미량 함유된 것으로 나타났으나, 발아율이 60% 이하, 칼리 성분이 1.2%,dm 이상 및 염분농도가 1.4%, dm 이상 등으로서 부적합한 것으로 판정되었다. 생물계폐기물 자원순환을 위한 유용미생물처리 고속퇴비화시설의 건설은 환경 친화적인 양질퇴비생산으로서 지역자원을 순환 이용하는 사회 구축이 목표이므로, 인근주민과 주변 환경에 악영향을 차단하기 위하여 양질퇴비 생산과 함께, 오폐수, 분진, 소음, 진동, 악취 및 이물질을 분리 배출하는 고효율설비가 부수적으로 반드시 필요하였다.

• 한국자원식물학회지
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• 제33권6호
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• pp.682-688
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• 2020

Hemp (Cannabis sativa L.) is a dioecious plant, although monoecious plants are bred in some cultivars for fiber or seed production. Recently, hemp has received attention for medicinal use with some cannabinoids, including cannabidiol. Self-fertilization for breeding inbred lines is difficult because of dioeciousness and anemophily in hemp. This experiment was conducted to develop a self-fertilization method by forming female flowers and seeds from male plants of dioecious hemp. To induce the formation of female flowers on male plants, 500 mg L^-1 of ethephon was sprayed on plants at soon, seven and fourteen days after primordia formation. The plant ratio of female flowers formation and the number of harvested seeds were increased by ethephon treatment. Female flowers of male plants have 5 stigmas in contrast to the dual stigma of female 1plants. Male plant seeds were lighter and smaller than those from female plants. Although the germination rate was lower than that of normal seeds from female plants, the seeds from male plants germinated to grow seedlings. Thus, we suggest that hemp plants should be treated with ethephon at soon after primordia formation to induce the formation of more female flowers on the male plants.