• 한국자원식물학회지
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• 제22권2호
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• pp.180-194
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• 2009

본 조사지역의 관속식물은 121과 399속 510종 67변종 7품종 2아종 및 2교잡종 등 59 식재종을 포함하여 588종류로 조사되었으며. 이 중 116종은 금번 조사에서 새로이 추가되었다. 경부고속철도가 통과하는 지역인 무제치 3, 4, 5, 6늪과 대성사 주위의 습지와 천성산일원에서 희귀 및 멸종위기식물은 6종, 한국특산식물은 9종이 발견되었고, 식물구계학적 특정식물은 37종이 발견되었다. 경부고속철도건설로 인하여 나타날 식물상의 변화, 특히 습지의 식물에 미치는 영향을 알아보기 위해서는 사후 장기적인 모니터링이 필요할 것으로 보이며, 고층습지의 수원 변동에 대하여 식물보전계획을 수립해야한다.

• The Plant Pathology Journal
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• 제38권2호
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• pp.78-89
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• 2022

Phaeosphaeria species are pathogenic on wheat, barley and a wide range of wild grasses. To analyze mating type loci of the Phaeosphaeria species and investigate mating type distribution in Iran, we sequenced mating type loci of 273 Phaeosphaeria isolates including 67 isolates obtained from symptomatic leaves and ears of wheat, barley, and wild grasses from two wheat growing region in Iran as well as 206 isolates from our collection from other regions in Iran which were isolated in our previous studies. Mating type genes phylogeny was successfully used to determine the species identity and relationships among isolates within the Phaeosphaeria spp. complex. In this study, we reported seven new host records for Phaeosphaeria species and the Phaeosphaeria avenaria f. sp. tritici 3 group was first reported from Iran in this study. Mating type distribution among Phaeosphaeria species was determined. Both mating types were present in all sampling regions from Iran. We observed skewed distribution of mating types in one region (Kohgiluyeh va Boyer-Ahmad) and equal distribution in the other region (Bushehr). However, when considering our entire dataset of 273 Iranian Phaeosphaeria isolates, the ratio of mating types was not deviated significantly from 1:1 suggesting possibilities for isolates of opposite mating type to interact and reproduce sexually, although the sexual cycle may infrequently occur in some regions especially when the climatic conditions are unfavorable for teleomorph development.

• Journal of Forest and Environmental Science
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• 제26권1호
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• pp.9-15
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• 2010

This paper analyzes data on the plant species diversity and their contribution to the livelihoods of rural people in five villages of Domar upazila, Nilphamari district, Bangladesh. Assessment was done by means of multistage random sampling. Information collected from a total of 40 households ranging from small, medium and large categories. A total of 52 plant species belonging to 34 families were identified as being important to local livelihoods. Fruits (37%), timber (23%) and medicinal (17%) species were the most important plant use categories. Determination of the relative density of the different species revealed that Areca catechu constitutes 19.17% of homestead vegetation of the area followed by Artocarpus heterophyllus, which occupies 10.34%. Margalef index showed that there is no major difference (5.11 for large, 5.49 for medium, 4.73 for small) across the different size classes and Shannon-Weiner Index of the study area varies from 2.75 to 2.98. Results show that the average annual homestead income varied from US$108.69 to US$291.67 and contribute 6.63% of the household income.

• 한국작물학회지
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• 제48권4호
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• pp.303-307
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• 2003

Some Compositae plants are known to contain biologically active substances that are allelopathic to weeds species as well as antioxidant to foods. Aqueous extracts from leaves of 3 plant species, Cirsium japonica, Kalimeris yomena, and Lactuca saliva, were bioassayed against alfalfa (Medicago saliva) to determine their allelopathic effects. The extracts applied on filter paper in bioassay significantly inhibited root growth of alfalfa. Extracts of 20 g dry tissue $\textrm{L}^{-1}$ from Lactuca sativa showed the most inhibitory effect on alfalfa seedling growth and followed by Cirsium japonica and Kalimeris yomena. Oxidative stability by Rancimat method and antioxidant activity by TBA method for the ground samples were the greatest in Lactuca sativa although were less than that of a commonly used antioxidant, 1% ascorbic acid. Antioxidant activity of methanol extracts on storing meat was stably kept for 28days and was excellent compared to control. These results suggest that three Compositae plants have potent allelopathic and antioxidant effects, and that their activities differ, depending on plant species.

• Mycobiology
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• 제45권2호
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• pp.97-100
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• 2017

Endangered native plant habitats and populations are rapidly disappearing because of climate and environmental changes. As a representative, the abundance of the first-class endangered wild plant, Cypripedium japonicum, has been rapidly decreasing in Korea. The purpose of this study was to evaluate the distribution of rhizosphere and endophytic fungi on C. japonicum in its native habitat. A total of 440 rhizosphere and 79 endosphere fungi isolates were isolated and identified on the basis of their molecular characteristics. Sixty-five genera and 119 fungi species were identified in this study. The genus Trichoderma showed the highest abundance among both rhizosphere and endosphere fungi. Mortierella, Hypocrea, and Penicillium spp. were also relatively dominant species on C. japonicum. The community structures of rhizosphere and endosphere fungi were similar, but endosphere fungi showed greater diversity.

• 한국환경복원기술학회지
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• 제11권3호
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• pp.62-73
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• 2008

This paper was conducted to acquire the scientific data for the waste landfill greening. The native plant flora was investigated in waste landfill at Nanjido. As a result, total 40 species, 22 families, 32 genus were classified. The dominant species were Robinia pseudoacacia (15%), Populus euramericana (3%), and Populus monilifera (1%), ect. Naive plant of 6 species (Zoysia japonica, Aster koraiensis, Liriope platyphylla, Hemerocallis fulva, Sedum kantschaticum, Indigofera pseudotinctoria) were planted in waste landfill in one species per 1 $m^2$ for greening purpose. After One year planting, the ornamental optimum value was showed in Zoysia japonica, Aster koraiensis, Hemerocallis fulva, Hemerocallis fulva, Sedum kantschaticum. The covering rate after nine months planting was 85% and 80% for Zoysia japonica and Hemerocallis fulva, respectively. While Aster koraiensis(a) 13 %, Liriope platyphylla 8 % and Sedum kantschaticum appeared 22 % were obtained. Aster koraiensis (a) has highest height and Sedum kantschaticum was the shortest plant.

• Journal of Plant Biology
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• 제16권3_4호
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• pp.1-6
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• 1973

The distribution of plant communities along the Bukhan Riverside in Chun-seong was studied by means of the methods fo Curtis and Pattern. The communities were arranged in a single-dimensioned ordination on the basis of the importance values of the persistent species. Leading dominant species, form the 'low' level to the 'high' levels of the ordination gradient, were Phalaris arundinacea, Salix gilgiana, Artemisia feddei, Zoysia japonica, Pennisetum japonicum, and Arundinella hirta. These species from a continuum from the river to the dry grassland depending upon available soil-moisture. Standing crops in terms of dry weight and the nitrogen content of the above-ground parts of these species showed a good relationship with gradients of available soil-moisture.

• Plant Resources
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• 제2권2호
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• pp.113-126
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• 1999

Through the research of tracheophytes type around Mt. Daedun, we are aiming at figuring out the habitat condition of useful resource plants by the classification of vegetation units and communities using the Z-M phyto-sociological method in the basis of the traits of species composition and by the analysis of vegetation and environment by way of coincidence method. Tracheophytes in our research sites was classifid into 117 family, 475 genus 797, species 102 variety,18 breed, in total to 917 kinds. The forest around Mt. Daedun district was classified into 6 communities, 12 groups, 2 sub-groups according to feature species group, differential species group and differential. Judging the result from the examination of community classification factors by the coincidence method, vegetation unit was decided by altitude and topography.

• Journal of Species Research
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• 제2권2호
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• pp.245-248
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• 2013

A new species of Apiaceae, Angelica reflexa from Daeamsan, Gangwon-do province, Korea is described and illustrated. This new species is closely related to A. genuflexa Nutt. ex Torr. & A. Gray, having such characters as leaf rachis and petiolules refracted strongly, but distinguished from the latter by its regularly serrated leaf margins, glabrous on abaxial leaf veins, and two vittae on the commissural face of the mericarp.

• Genomics & Informatics
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• 제14권3호
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• pp.90-95
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• 2016

Nuclear mitochondrial DNA segment (Numt) insertion describes a well-known phenomenon of mitochondrial DNA transfer into a eukaryotic nuclear genome. However, it has not been well understood, especially in plants. Numt insertion patterns vary from species to species in different kingdoms. In this study, the patterns were surveyed in nine plant species, and we found some tip-offs. First, when the mitochondrial genome size is relatively large, the portion of the longer Numt is also larger than the short one. Second, the whole genome duplication event increases the ratio of the shorter Numt portion in the size distribution. Third, Numt insertions are enriched in exon regions. This analysis may be helpful for understanding plant evolution.