한국산 여로속(Veratrum L.) 서식지의 식물 및 토양특성
Ecophysiological Study of Korean Veratrum Plants
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본 연구는 한국산 여로속 서식지의 식물과 토양 특성을 구명하기 위하여 여로속 6종의 식물에 대한 식물체의 무기이온 분석, 서식지의 토양이온분석, 식물과 토양과의 상관관계, 지역별 토양특성을 이용한 분산분석과 군집분석 및 PCA Ordination 분석을 시행하였다. 식물체의 무기이온분석 결과, 양이온 및 음이온의 함량에서는 박새가 높았으며, 긴잎여로가 낮은 값을 보였다. 식물과 토양과의 상관관계 분석 결과에서는 거의모든 여로속 식물에서 K-선호성을 보였으며 특히, 긴잎여로가 가장 높은 K-선호성을 보였다. 전체적으로 토양의 낮은 K/Ca 비에도 불구하고식물체내 높은 K/Ca 비를 보였으며 특히, 긴잎여로와 일부 파란여로가 매우 높은 체내 K/Ca 비를 보였다. 식물체 물질 함량을 변수로 적용한군집분석 및 PCA Ordination 분석의 결과는 크게 세 그룹으로 나눌 수 있으며, 박새를 제 1그룹, 긴잎여로를 제 2그룹, 파란여로, 여로, 참여로,흰여로를 제 3그룹으로 구분할 수 있었다. 이는 한국산 여로족의 엽록체 DNA와 핵 DNA (ITS)의 염기서열분석 및 계통학적 연구와 유사한결과를 나타내었다. 전반적으로 여로속(Veratrum) 식물은 pH 5.1∼5.6의 산도를 갖는 전형적인 산림토양에 서식하면서 질소와 총 이온함량이매우 낮은 환경에도 불구하고 체내 삼투를 적절히 조절하며 열악한 환경을 극복하는 것으로 여겨진다.
Abstract
This dissertation studies the ecophysiological characteristics of the Korean Veratrum plants. In this study I analyzed plants ion, soilion of habitat, correlation between plants and soil. In addition variance analysis, cluster analysis, and PCA Ordination analysis usingsoil properties by region were made. The reslut is as follows. Inorganic ion analysis of the six species in Veratrum plants. Veratrumpaturum oxysepalum has the highest value and Veratrum maackii has the lowest in content of positive ion. The correlation analysisbetween soil and plants. Almost all of Veratrum plants show K-preferrence and especially Veratrum maackii shows the highestK-preferrence. Despite low K/Ca ratio of soil generally, they show high K/Ca ratio in the plants, especially Veratrum maackii and someVeratrum maackii var. parviflorum show very high K/Ca ratio in the plants body. Cluster analysis and PCA Ordiantion analysis. Applyingmaterial content of plants as variable, these analyses divide Korean Veratrum plants into three groups. Veratrum paturum oxysepalumis divided into the first group, Veratrum maackii into the second group, and Veratrum maackii var. parviflorum, Veratrum maackii var. japonicum, Veratrum nigrum var. ussuriense, Veratrum vesicolor into the third group. These results are similar to those of sequencinganalysis and phylogenetical study of chlorophyll DNA and nucleus DNA (ITS) in the Korean Veratum plants. Generally Veratrum plants live in poor environment of typical forest soil with acidity of pH 5.1∼5.6 that has very low nitrogen and total ion content. Neverthelessthey are considered to get over poor environment regulating infiltration in the body appropriately.
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