• Research in Plant Disease
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• v.29 no.2
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• pp.184-187
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• 2023

In May 2020, we surveyed disease occurrence on vegetables grown in Seosan area, Korea. During the disease survey, white rot symptoms were observed in Korean wild chive (Allium monanthum) plants growing in fields. The symptoms occurred mainly in the seed bulb-producing fields of the crop. The above ground parts of the diseased plants displayed premature yellowing and dying of older leaves and stunting of the plants. The bulbs and roots of the diseased plants turned black and rotted. The disease occurred in a range of 1-60% in four of the eight fields surveyed. Three isolates of Sclerotium sp. were obtained from the bulb lesions of diseased plants. All isolates were identified as Stromatinia cepivora based on the morphological characteristics and phylogenetic analysis. Pathogenicity of the isolates on Korean wild chive was confirmed by artificial inoculation test. The lesions induced by the inoculation test were similar to those observed in the investigated fields. This is the first report of S. cepivora causing white rot in Korean wild chive.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.24 no.5
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• pp.15-23
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• 2021

This study was carried out to suggest an appropriate plant combination by evaluating the growth of flowering ground-cover plants planted with Festuca glauca 'Eljiah Blue' on the roof-top environment. As for the plant materials, Allium senescens and Chrysanthemum coreanum which are shorter than Festuca glauca 'Eljiah Blue' and Sedum takesimense and Agastache rugosa which are taller than Festuca glauca 'Eljiah Blue' were selected. Festuca glauca 'Eljiah Blue' was planted on Conrol, and Festuca glauca 'Eljiah Blue' with Allium senescens (T1), Festuca glauca 'Eljiah Blue' with Sedum takesimense (T2), Festuca glauca 'Eljiah Blue' with Agastache rugosa(T3), and Festuca glauca 'Eljiah Blue' with Chrysanthemum coreanum (T4) were planted in each experimental plot. Plant height and covering rate were measured to evaluate the growth of Festuca glauca 'Eljiah Blue'. Also, relative growth rate (RGR) of plant height, RGR of plant width, and mortality rate of the flowering ground-cover plants were estimated. Plant height and cover rate of Festuca glauca 'Eljiah Blue' was greatest in T3. RGR of plant height was greater in the order of Agastache rugosa, Allium senescens, Chrysanthemum coreanum, and Sedum takesimense. In particular, RGR of plant width was also greatest for Agastache rugosa. Mortality rates of Agastache rugosa and Allium senescens were lowest at 11%. Therefore, based on good growth of Festuca glauca 'Eljiah Blue' planted with Agastache rugosa, these results were suggested as a desirable combination of plant species for rooftop gardening.

• Korean Journal of Plant Taxonomy
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• v.48 no.4
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• pp.278-288
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• 2018

Polyploidization plays an important role in generating the current high diversity of plants. Studies of the distributional patterns of diploid and derivative polyploid races have provided important insights into the evolutionary process and cryptic speciation by polyploidization within and between closely related taxa defined on the basis of their morphology. Allium thunbergii and A. sacculiferum, occurring throughout eastern Russia, eastern China, Korea, and Japan, are examples of closely related species with unsolved taxonomic relationships. A total of 97 and 65 individuals from 26 and 13 populations of A. thunbergii (including var. thunbergii, var. deltoids, and var. teretifolium) and A. sacculiferum, respectively, were studied to determine their ploidy. The geographic structure and habitat differentiation of the cytotypes were also analyzed. The main cytotype of A. thunbergii was diploid (92.3% in total; the rest were tetraploids). In contrast, the majority of A. sacculiferum plants were tetraploids (69.2% of the total; the rest were diploids). No populations of the studied taxa harbored both cytotypes. Allium thunbergii was more often found at higher elevations than A. sacculiferum, and it tended to occur more frequently on rocky slopes and below forests in mountainous areas. On the other hand, A. sacculiferum occurred at forest margins and in lowland pastures. The cytotypes differed with respect to the elevation; diploids were found more frequently at higher elevations than tetraploids. The results of this study and additional biosystematics data indicate that the morphological characteristics of A. thunbergii and A. sacculiferum may be influenced by polyploidization and by their adaptation to various habitat conditions and that A. thunbergii and A. sacculiferum do not clearly fulfill the requirements of any species concept. Consequently, we propose that A. sacculiferum be considered as an additional synonym of A. thunbergii. Additionally, Allium thunbergii var. deltoides is unified into A. thunbergii var. thunbergii.

• Mycobiology
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• v.33 no.3
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• pp.137-141
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• 2005

High performance liquid chromatographic (HPLC) analysis of mycelia of Sclerotium rolfsii grown in broth medium supplemented with garlic (Allium sativum) and onion (Allium cepa) was carried out to estimate qualitative and quantitative changes in phenolic acids. Several phenolic acids, such as gallic, chlorogenic; ferulic, o-coumaric and cinnamic acids were detected in varied amounts in mycelia grown on such media as compared to control. Phenolic acids represents a wide range of secondary metabolite found in the cells of plants and microbes including fungi. The growth characters of S. rolfsii in various supplements also varied from thin and transparent to thick and opaque.

• Asian Journal of Turfgrass Science
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• v.13 no.3
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• pp.171-176
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• 1999

Chrysanthemum showed worse grow of wilt to death during summer at the field which is Allium fistulosum (welsh onion) plants had been cultivated. This study was carried out to analysis of activative inhibitors of chrysanthemum from root exudate of Allium fistulosum. Bioassay experiments with welsh onion root exudate were conducted and the biologically active compounds were determined. The results were obtained as follows. The root exudate of welsh onion inhibited root and hypocotyl growth of chrysanthemum and lettuce at low concentration(10ppm). The inhibitory effects was higher in closed bottom box but with drain hole than in open bottom box plot. The inhibitory substance contained in root exudate was analysed as vanillic acid. This phenolic acid was also detected in stem-leaf and root of welsh onion.

• International Journal of Industrial Entomology and Biomaterials
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• v.14 no.2
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• pp.81-85
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• 2007

White Muscardine is the most common fungal disease of silkworm, Bombyx mori L. caused by the pathogenic fungus, Beauveria bassiana (Balsamo) Vuillemin. In the present investigation, an attempt has been made to screen locally available medicinal/ weed plants against Beauveria bassiana. Among the plant extracts (PE) tested, 5% aqueous crude extract of the bulb of Allium sativum (Garlic) has been found to be most effective against Beauveria bassiana. The radial growth of Beauveria bassiana in vitro was inhibited to the tune of 54.9% in aqueous extract and 54.4% in ethanolic extract of Allium sativum and correspondingly mycelial dry weight gave rise to 110.7 mg and 108.7 mg against 201.7 mg in control 15 days post treatment. Similarly, silkworm larvae topically inoculated with the Beauveria bassiana conidia ($1.8{\times}10^6/ml$) registered survival up to 53.0% against 0.0% in control after treatment with aqueous extract of Allium sativum. Simultaneously, as a preventive measure, silkworm larvae were put to rear in conidia contaminated seat paper instantly treated with aqueous extract of Allium sativum that also increased survival up to 61.0% against 4.6% in control. It is also observed that the plant extract is absolutely innocuous to silkworm.

• Korean Journal Plant Pathology
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• v.14 no.6
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• pp.567-570
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• 1998

More than 100 isolates of Stemphylium obtained form leaf blight lesions of garlic (Allium sativum), onion (A. cepa) and leek (A. fistulosum) were identified as Stemphylium vesicarium (Wallr.) Simm. based on various morphological characteristics rather than S. botryosum Wallr. previously reported on those plants in Korea. In controlled inoculations, the pathogen induced the disease symptoms on leaves of garlic 7 days after inoculation. Onion and leek were also artificially infected by the fungus. This is the first report of S. vesicarium causing a leaf blight of garlic, onion and leek in Korea.

• Asian Journal of Turfgrass Science
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• v.9 no.1
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• pp.43-51
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• 1995

This study was conducted from September 1, 1994 to December 12, 1994 to investigate the leaf color characteristics, flowering period and fruit period of Wild plants in Suwon and Taejon area. The results were as follows; 1. By using the chlorophyll meter, the chlorophyll content of Liriope platyphylla, Trifolium repens, Dystaenia takeshimana was 30.0, 22, 2 and 19.0, respectively on December 9, 1994. 2. By leaf color based on KBS standard color number, Liriope piatyphylla, Trifolium repens, Dvstoenia takeshirnana were green till December 9, 1994. 3. The flowers of Aster sea ber, Atractylodes japonica, Allium thunbergii, Liriope platyphylla, Scilla scilloides, Digitaria sanguinalis, Sanguisorba officinalis were persisting till September, and the flowers of Crysanthemum boreale were persisted till November and Allium thunbergii, till October.

• Archives of Pharmacal Research
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• v.14 no.4
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• pp.305-310
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• 1991

In order to find out the values of the steroid resources for the future use, the compositions and contents of steroidal sapogenins from 13 domestic plants have been investigated. As a result Dioscorea nipponica, D. quinqueloba and Smilax china were found to have large amount of diosgenin. And pennogenin in Trillium kamtschaticum and Paris verticillata, yuccagenin in Allium fistulosum, hecogenin in Agave americana and neochlorogenin in Solanum nigum were appeared to be major steroidal sapogenins.

• Journal of the Korean Society of Food Science and Nutrition
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• v.26 no.6
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• pp.1159-1163
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• 1997

We have studied the effect of 31 extracts and 10 components from some edible and medicinal plants on the formation of lipid peroxide in the liver homogenate of rat in vitro. The 70% acetone extracts of Allium tuberosum, Beta vulgaris var. cicla and Brassica juncea var. integrifolia, and methanol extract of Capsicum annuum decreased the formation of lipid peroxide by 33%, 58%, 62% and 56% at the concentration of 1mg/ml, respectively. And these four extracts inhibited the lipid peroxidation at the concentration of $10^{-1}$mg/ml by 17%, 46%, 49% and 45% respectively. Among the component tested, quercetin, quercitrin and isorhamnetin reduced the formation of lipid peroxide by 45%, 15% and 28% respectively at the concentration of $10^{-2}$mg/ml.