Genetic diversity and relationship among the accessions of cultivated types of Perilla frutescens and their weedy types were studied with 11 microsatellite markers. A total of 101 alleles were detected with an average allele number of 9.2 per locus among 70 Perilla accessions. Number of alleles per locus ranged from two for KWPE-39 to 21 for KWPE-53 and gene diversity for each locus was varied from 0.479 to 0.918 with an average of 0.715. The average gene diversity value was 0.626, 0.657, 0.509 and 0.524 for cultivated and weedy types of var. frutescens, and cultivated and weedy types of var. crispa, respectively. The weedy type accessions of var. frutescens and var. crispa showed more variation than corresponding cultivated type accessions. As for the cultivated type of var. frutescens, the accessions from China showed higher microsatellite diversity than those of Korea and Japan. An UPGMA phylogenetic tree revealed three major groups which were congruent with their morphological characters and geographical distribution patterns except for a few odd accessions. Although the wild ancestral species of cultivated types of P. frutescens has not yet been identified, our results may provide some evidence for the origin and the diffusion route of cultivated type of var. frutescens in East Asia. Cultivated Perilla crop might be originated in China, and its diffusion might be from China to Japan via Korea and the weedy types of Perilla crop are the key taxon in understanding the origin of cultivated type of both var. frutescens and of var. crispa.

To facilitate breeding of lines with either the Ppd-D1a or ppd-d1a, we screened 342 F2 progenies from a cross between Laura (photoperiod insensitive, Ppd-D1a) spring wheat and SWP5304 (photoperiod sensitive, ppd-d1a) for their time to heading under 10 hour day length, and with a set of 37 microsatellite primers previously mapped to chromosome 2D. Bulk segregant analysis was used to identify tow linked microsatellite loci. The Ppd-D1a locus was flanked by Xgwm484 with 13.7 cM distance and Xgwm455 with 27 cM. These markers may be useful in selection of the desired photoperiod sensitivity in segregating populations grown in Northern latitude.

본 연구는 한우의 지역별 유전적 다양성 및 집단간의 유연관계를 평가하기 위하여 경기, 강원, 충남, 충북, 전남, 전북, 경남 그리고 경북 8개 지역에서 비교적 지역간의 이동이 적은 번식우를 대상으로 공시축을 선발하여 분석을 실시하였다. 각 microsatellite marker의 평균 대립유전자의 수는 7.5개로 검출되었다. 관측된 대립유전자의 이형접합율을 보면 전북(CEB)과 전남(CEN)에서 가장 높게 나타났지만 기대되는 이형접합율은 전체 평균보다

형태학적으로 구분이 어려운 황정과 위유의 범위를 구분하기 위해 황정에 속하는 층층갈고리둥굴레, 다화황정, 진황정 등 3종과 위유에 속하는 8종의 둥굴레 동속 식물 등 11종 23 개체 시료로 RAMP분석한 결과를 요약하면 다음과 같다. 1. 황정그룹과 위유그룹은 NTSYS를 통한 유연관계 분석에서 55%의 유연관계를 나타냈으며, 층층갈고리둥굴레와 층층둥굴레는 81.75%로 분석에 사용된 둥글레 동속 식물 중 가장 높은 유연관계를 나타냈다. 2. 둥굴레 동속식물에 해당하는 층층둥글레는 황정의 약재인 층층갈고리둥굴레와 외부형태학적으로, 그리고 다형성패턴결과가 매우 유사하므로 황정의 약재에 속하는 것으로 사료된다. 3. 진황정은 위유와 외부형태적으로 유사하며, 유연관계분석에서도 위유의 그룹에 속하므로 위유의 약재에 대한 구분을 새롭게 할 필요성이 있다.

Genetic diversity of Korean landrace rice accessions was assessed with microsatellite markers. The 214 alleles weregedfrom 3 for SSS locus to 37 for RM206 locus with an average number of 12.6 alleles per locus. Gene diversity values according tothe 17 mic

This study was conducted to understand the genetic diversity and relationships of Korean cultivated barley groups classified as landrace, improved and introduced varieties by microsatellite variation (SSRP, Simple Sequence Repeats Polymorphism). With the