• 생명과학회지
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• 제11권3호
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• pp.197-202
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• 2001

This study was conducted to investigate the effect of simulated acid solution(SAS) on acid buffering capacity, chlorophyll content and butrient leacking in 4 herb species(Petunia hybrida Vilm, Gomphrena globosa L. Celosia cristat L. Salvia officinallis L) . The acid buffering capacity in the leves was increased in the treatment of pH 3.0 in Celosia L., whereas it was increased at pH 4.0 in Petunia Petunia hybrida Vilm. and Gomprean globosa L.. But, the acid buffering capacity of the leaves did not work at ph 2.0 treatment in 4 herb species. With decreasing pH level, the chlorophyll content of Petunia hybrida Vilm. and Gomphrena globosa L. Was markedly decreased than that of Gelosia cristata L. and Savia officinalis L. As the pH levels decreased from 5.6 to 2.0 the nutrient leaching from leaves was significantly increased in 4 herb species. In pH 4.0 and 5.6, the concentrations of nutrient leaching from leaves were higher in Perunia hybrida Vilm. and Gomphrean globosa L. than Gelosia cristata L. and Salvia officinalis L., Based on the results, there was a great differences in response to SAS among the 4 herb species. Im general, Gelosia cristata L. and Salvia officinalis L. represented a higher tolerance to SAS Petunia hybrida Vilm, and Gomphrena globosa L..

• 한국식물병리학회지
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• 제11권4호
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• pp.361-366
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• 1995

A virus was isolated from petunia (Petunia hybrida Vilm.) plants showing chlorotic ring spots on the leaves and color breaking on the flowers, and was identified as petunia asteroid mosaic virus (PAMV). Identification of the PAMV was established by host range test, electron microscopy, serological reaction, and physical properties of the virus. In the host range test, Nicotiana glutinosa, N. rustica, N. clevelandii, P. hybrida, Gomphrena globosa, and Chenopodium amaranticolor were systemically infected with the virus. The virus produced local lesions on inoculated leaves of N. tabacum‘Samsun’, N. tabacum‘Xanthi nc’, Datura stramonium, Vigna unguiculata‘White eye’, C. quinoa, Capsicum annuum, Vicia faba, and Lycopersicon esculentum‘Rutgers’. However, Cucurbita sativus and C. moschata did not show any symptoms. PAMV particles were isometric with 30 nm in diameter. The crude sap from G. globosa infected with the virus reacted positively with antiserum to tomato bushy stunt virus (TBSV) in agar gel double diffusion test. Thermal inactivation point of the virus was 8$0^{\circ}C$ and the virus retained its infectivity at the dilution of 10-4. Longevity in vitro of the virus was estimated longer than 35 days.

• 한국균학회지
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• 제36권2호
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• pp.203-205
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• 2008

2006년에서 2008년까지 진주에서 재배중인 페튜니아에서 병이 발생하였다. 병징은 줄기와 잎이 수침상으로 물러지고 썩으면서 갈색으로 변하며 시들어 말라 죽었다. 줄기, 지제부 및 토양 표면에 솜털모양의 흰색 균사체가 생기고 $1{\sim}3\;mm$ 크기의 둥근 갈색 균핵을 많이 형성하였다. PDA배지 상에서 병원균의 균사 폭은 $4{\sim}8\;{\mu}m$이며 clamp connection이 형성되었고 균사생육과 균핵형성 적온은 $30^{\circ}C$이었다. 페튜니아에서 발생한 병징과 병원균의 균학적 특징 및 병원성을 기초로 본 병을 Sclerotium rolfsii Saccardo에 의한 페튜니아 흰비단병으로 명명하고자 제안한다.

• Journal of Plant Biotechnology
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• 제5권1호
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• pp.69-77
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• 2003

Brassinosteroids are known to promote cell elongation in a wide range of plant species but their effect on cell division has not been extensively studied. The effect of brassinolide on the kinetics and final division frequencies of regenerating petal protoplasts of Petunia hybrida Vilm v. Comanche was examined. Under optimal auxin and cytokinin conditions, 10-100 nM brassinolide not only reduced the time of first cell division by 4.5 days but also altered the final division frequencies after 10 days of culture. One micromolar brassinolide showed the same acceleration of first cell division but inhibited the final division frequency by approximately 9%. Under sub-optimal auxin conditions, 10-100 nM brassinolide accelerated the first cell division, but no significant increase in the 8-10 days final division frequencies. Isolated protoplasts may provide a useful model system for the investigation of the molecular mechanisms of brassinosteroid action on cell division and proliferation in higher plants.

• Journal of Plant Biotechnology
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• 제5권1호
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• pp.63-67
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• 2003

Brassinosteroids are known to promote cell elongation in a wide range of plant species but their effect on cell division has not been extensively studied. The effect of brassinolide on the kinetics and final division frequencies of regenerating petal protoplasts of Petunia hybrida Vilm v. Comanche was examined. Under optimal auxin and cytokinin conditions, 10-100 nM brassinolide not only reduced the time of first cell division by 4.5 days but also altered the final division frequencies after 10 days of culture. One micromolar brassinolide showed the same acceleration of first cell division but inhibited the final division frequency by approximately 9%. Under sub-optimal auxin conditions, 10-100 nM brassinolide accelerated the first cell division, but no significant increase in the 8-10 days final division frequencies. Isolated protoplasts may provide a useful model system for the investigation of the molecular mechanisms of brassinosteroid action on cell division and proliferation in higher plants.

• 농업과학연구
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• 제17권1호
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• pp.9-17
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• 1990

화훼류(花卉類)에 대한 Erwinia carotovora subsp. carotovora, Pseudomonas viridiflava와 Pseudomonas marginalis pv. marginalis 세 균주(菌株)의 기주범위(寄主範圍)를 알기 위하여 국내(國內) 주요화훼류(主要化卉類) 35종류(種類)에 자침접종(刺針接種)과 분무접종(噴霧接種)한 결과(結果) 다음과 같은 식물(植物)에 병원성(病源性)이 있었다. 1. E. c. subsp. carotovora(자침접종(刺針接種)) : 국화과(菊花科)의 국화(菊花), 아게라텀, 과꽃, 백일홍, 다알리아, 금잔화, 코스모스, 루드베키아, 석죽과(科)의 카네이션, 안개초, 협죽도과(科)의 빈차, 비릅과(科)의 색비름, 천일홍, 현삼과(科)의 금어초, 마편초과(科)의 버어베나, 한련과(科)의 한련화, 광대나물과(科)의 셀비어, 추해당과(科)의 베고니아, 붓꽃科(과)의 글라디올러스, 아이리스, 칸나과(科)의 칸나, 앵초과(科)의 시클라벤, 수선과(科)의 군자란, 십자화과(科)의 꽃양배추. (분무접종(噴霧接種)) : 석죽과(科)의 카네이션, 협죽도과(科)의 빈카, 비름과(科)의 색비름, 현삼과(科)의 금어초, 한련과(科)의 한련화, 붓꽃과(科)의 글라디올러스, 칸나과(科)의 칸나, 앵초과(科)의 시클라벤. 2. P. viridiflava(자침접종(刺針接種)) : 국화과(菊花科)의 국화(菊花), 아게라텀, 과꽃, 금잔화, 코스모스, 루드베 키아, 석죽과(科)의 카네이션, 안개초, 협죽도과(科)의 빈카, 비름과(科)의 맨드라미, 현삼과(科)의 금어초, 한련과(科)의 한련화, 가지과(科)의 페츄니어, 추해당과(科)의 베고니아, 붓꽃과(科)의 글라디올러스, 칸나과(科)의 칸나, 앵초과(科)의 시클라멘, 수선과(科)의 군자란, 십자화과(科)의 꽃양배추. (분무접종(噴霧接種)) : 한련과(科)의 한련화, 붓꽃과(科)의 글라디올러스, 칸나과(科)의 칸나, 앵초과(科)의 시클라멘. 3. P. m. pv. marginalis(자침접종(刺針接種)) : 국화과(菊花科)의 매리골드, 아게라텀, 백일홍, 금잔화, 코스모스, 석죽과(科)의 패랭이꽃, 안개초, 카네이션, 비름과(科)의 색비름, 밴드라미, 현삼과(科)의 금어초, 마편초과(科)의 버어베나, 협죽도과(科)의 빈카, 한련과(科)의 한련화, 가지과(科)의 페츄니어, 추해당과(科)의 베고니아, 붓꽃과(科)의 글 라디올러스, 아이리스, 칸나과(科)의 칸나, 앵초과(科)의 시클라벤, 수선과(科)의 군자란, 십자화과(科)의 꽃양배추. (분무접종(噴霧接種)) : 한련과(科)의 한련화, 붓꽃과(科)의 글라디올러스, 칸나과(科)의 칸나, 앵초과(科)의 시클라멘.