The groundnut or cultivated peanut (Arachis hypogaea L.) in Korea consists of 36 domestic varieties which have been developed and registered as cultivars for the public during last 25 years. To screen and identify of Korean peanut varieties and genetic resources, we present a simple and reliable method. A methodology based on simple sequence repeat (SSR) markers developed and widely used for prominent gene identification and variety discrimination. For identification of those 36 Korean peanut varieties, 238 unique peanut SSR markers were selected from some previously reported results, synthesized and used for polymerase chain reaction (PCR). Data were taken through acryl amide gel electrophoresis and changed into proper formats for application of data mining analysis using Biomine (all-in-one functional genomics data mining program). Consequently, twelve SSR primers were investigated and revealed the differences between those 36 varieties. These primer pairs amplified 27 alleles with an average of 2.3 allele per primer pair. In addition, those results showed genetic relationship by classification method within 36 varieties. The approach described here could be applied to monitoring of our varieties and adapting to peanut breeding program.

A new sesame variety “Jinki” was developed from Yeongnam Agricultural Research Institute in 2005. The cross was made by high quality and yielding “Jinbaek” to the F1 hybrid of “Suwon 129” with high yield capacity and “ALM3” with disease resistance, follow

A new sesame variety “Kopoom” was developed from Yeongnam Agricultural Research Institute in 2005. The cross was made by shattering resistance F1 hybrid of Dongro x SC645 to the high yielding capacity F1 hybrid of Yoosung x Mokpo 9, followed by pedigree s

The experiment fields consisted of five plots as follows; 2, 4, and 8 tonsㆍha⁻¹ citrus skin in combination with starch sludge and pig manure mixing compost (CSSP), 4 tonㆍha⁻¹ fermented pig manure compost (FPMC) treated plot, and untreated control. Plant height and stem diameter were significantly increased by CSSP. Most of all, average tuber weight and tuber yield per plant were significantly increased in 4 and 8 tonsㆍha⁻¹ CSSP plots compared to the other plots. Marketable tuber (＞50 g fresh weight) yield were superior in order of 4 and 8 tonsㆍha⁻¹ CSSP plot, 4 tonsㆍha⁻¹ FPMC plot, and 2 tonsㆍha⁻¹ CSSP plot.

Recently, with increasing concern for sustainable agriculture and safe agricultural products, organic farming has become widely adapted as an alternative to conventional farming. This study was conducted to investigate the effects of earthworm casts (EWC) with 100~% organic compost on the growth and yield characteristics of fall-cropping potato (Solanum tuberosum L. cv. Dejima) in Jeju. The treatments consisted of seven plots: 2-, 4-, 6-, 8-, and 10-ton ha-1 EWC-treated plots, 1.2-ton ha-1 complex fertilizer (N-P2O5-K2O,~;10-10-14)-for-potato (CEP)-treated plot as conventional practices, and a control plot. The plant heights were greater in the plots where EWC and CFP were applied than in the control plot. Tuber diameter, number of stems per plant, and chlorophyll level tended to increase in the plots where 8-10 tons ha-1 of EWC were applied. The application of CFP and EWC showed an increment in the average tuber weight per plant, but there was minimal significant difference. The application of 8-10 tons ha-1 of EWC resulted in an increase in the total tuber yield (21.61-21.87 tons ha-1 ) as compared to the other plots. The highest yield of market able tubers was 69.8~% of the total yield from the 10-ton ha-1 EWC-treated plot. Consequently, with regard to the growth and yield characteristics of fall-cropping potato, the effects of EWC application were more favorable than the effects of the application of a chemical fertilizer.