In this study, we detected the morphological variation of 83 Perilla accessions from Korea and China by observing the measurements of seven quantitative and eight qualitative characters. Most accessions of cultivated var. frutescens from Southern China showed higher plant height than accessions from Korea and Northern China. The accessions of cultivated var. frutescens from Southern China have a relatively late flowering time, while there were three types of accessions for cultivated var. frutescens from Korea and Northern China: early-maturity, middle-maturity, and late-maturity. These results indicate that latitude with geographical distribution may be an essential factor affecting the flowering time in Perilla species in East Asia. In principal components analyses (PCAs), four quantitative traits and five qualitative characters contributed in the positive direction on the first axis. The accessions of cultivated var. frutescens were clearly separated from accessions of cultivated and weedy types of var. crispa in the PCAs, while the accessions of cultivated and weedy types of var. crispa revealed no separation. In addition, most accessions of weedy type of var. frutescens were not clearly separated with the accessions of cultivated and weedy types of var. crispa. In this study, we have provided the information regarding the morphological variation of accessions of two cultivated types of Perilla crop and their weedy types from Korea and China. The findings provide further insight into the morphological variations and differentiation of Perilla accessions with different geographical distributions in Korea and China.

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Chinese jujube (Ziziphus jujuba Mill.) is highly resistant to environmental stress and can be easily cultivated, thus many jujube cultivars are being developed. However, the same cultivars had been cultivated with different names. Thus, systematic management is required to protect the intellectual property of different varieties. To aid systematic control of jujube cultivars, this study presents efficient markers for distinguishing cultivars through identification of morphological characteristics and relationships among 25 jujubes. Among 10 qualitative characteristics, flowering time, fructification time, presence of thorns, and shape of fruit were found to be useful traits for the cultivar identification. In the results of principal component analysis, 3 principal components (PC) represented 73% for the total variations. PC1 showed high positive correlations with fruit–related characteristics and PC2 formed a cluster with leaf-related characteristics. Therefore, the differences in fruit and leaf were identified as useful traits for the cultivar identification. According to the results of cluster analysis, which largely divided cultivars into 4 clusters, Sour jujube 2, with smaller fruits and leaves, was separated first. Cluster II included Chinese cultivars with large fruit sizes, such as Dalizao, Dabailing, Damaya, and Daguazao. Three Korean cultivars were grouped with Bokjo, Panzao, Zanhuangdazao, and Jinsi No. 3, and the remaining 13 cultivars formed a separate cluster.

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