한국에서 수집한 재배형 들깨 계통들의 형태적 변이

Morphological Variation in the Accessions of Cultivated var. frutescens of Perilla Crops Collected in South Korea

To better understand the morphological variation in the 189 accessions of cultivated var. frutescens of Perilla crop preserved atthe RDA-Genebank in South Korea, morphological characteristics were investigated using seven traits related to leaf quality. In the principalcomponent analysis (PCA), the first and second principal components accounted for 28.9% and 19.7% of the total variance, respectively. In the first component, leaf color (QL1) and stem color (QL3) contributed positively, whereas the flowering period (QL5) and degree ofpubescence (QL6) contributed in a negative manner. In the second component, QL5 and QL6 contributed positively, whereas the fragranceof plants (QL7) contributed negatively. The results of PCA showed that the 189 Perilla accessions were clearly divided into three groupsbased on the 1st axis (X-axis), except for some accessions. However, the Perilla accessions collected in South Korea and abroad did notshow a clear geographical distribution between the collection areas. Correlation analysis among the seven traits of 189 Perilla accessionsshowed a positive correlation coefficient for the combination of QL1 and QL3, and QL5 and QL6, and a negative correlation for the combinationof color of the reverse side of the leaf and QL6, and QL5 and QL7. Therefore, the results of this study will provide useful informationfor the selection of useful resources for the development of leafy vegetable varieties of the Perilla crop and the preservation and managementof genetic resources of the Perilla crop preserved at the RDA-Genebank in South Korea.