Sinjami' is a new sweetpotato variety with purple flesh developed from the Mokpo Experiment Station, National Honam Agricultural Experiment Station (NHAES), Rural Development Administration (RDA) in 2001. This variety was selected from the cross between '

Several plant growth regulators were examined for on their effect on the in vitro propagation of Kalopanax pictus(THUNB.) (NAKAI.) on WPM medium. Among the cytokinins tested, BA at 13.32 μM appeared to be the most effective for multiple axillary shoot formation. Although the addition of 2.89 μM GA3 promoted stem elongation, it produced morphologically abnormal leaves and stems. For rooting of the shoots, 4.9 μM IBA seemed to be more effective than 2.69 μM NAA. When the regenerated plants were transferred on artificial mixture containing vermiculite and peat-moss (1 : 1, v/v), 81% of them survived and grew normally.

Borami' is a new sweetpotato cultivar with light purple flesh developed at the Mokpo Experiment Station, The National Honam Agricultural Experiment Station, RDA. This cultivar was selected from the cross between 'Yamakawamurasaki' and 'Shinmi' in 1994, Se

A total of 1,830 soybean collections were grown in the field and characterized for 10 morphological traits to determine the diversity and relationship within and among geographical regions. Phenotypic variation was found within all regions for most characters. The Shannon-Weaver diversity index ranged from 0.49 to 0.62 across regions, and 0.09 to 1.00 across characters. Canonical discriminant analysis and clustering of the canonical means delineated 3 regional clusters: (ⅰ) Kyunggi, Chungchong, Kangwon, Chulla, and Kyungsang; (ⅱ) Heilongjiang; and (ⅲ) Jilin, Manchuria, central China, south China, Others (China), Hokkaido, Honshu, and Others (Japan).

The experiment was carried out to study the variations and geographical distribution of β -amylase isozyme by isoelectric focusing (IEF) within Korean, Chinese and Japanese soybean land races. In pH 3-10 gel of IEF, the amylase of soybean accessions was separated into low pI group isozymes (TEX>Sp1 b) and high pI group isozymes(Sp1 a). In pH4-6.5 gel, isoelectric points were at 5.07, 5.15, 5.25, 5.40, and 5.94, and h, j, and k bands also were found. The distribution of Sp1 a allele (high pI type) was 29.3% in soybean accessions from Korea, 10.1 % in those from China, and 6.9% in Japanese accessions. The percentage of Sp1 a) allele was the highest in soybean accessions from Kyungsang province (35 %) in Korea, then central China (32 %) in China, and Honshu (10%) in Japan