Background : This study aimed to investigate the effect of elevated temperature by climate change on growth and ginsenoside contents of Korean ginseng, which requires low temperature during growth period. Methods and Results : Yunpoong was transplanted in temperature gradient chamber (TGC) for high temperature treatment and then growth characteristics and ginsenoside contents were investigated by growth period. Stem length, petiole length, leaf length and leaf width were increased as the temperature was higher than Ambient Temperature (Amb), but stalk diameter was decreased and small petiole length, number of petiole and leaf were no significant difference. Root growth, whereas, including length diameter and weight were decreased as the temperature was higher than Amb. Compared with Amb, root length, diameter and weight were decreased by 19.6%, 22.4% and 41.5% at Amb+6, respectively. The higher the temperatures are associated with the more ginsenoside contents. Compared to Amb, total ginsenoside contents were increased by 68% and 78% at Amb+4℃ and Amb+6℃, respectively. Almost all contents of individual ginsenoside, with the exception of Rg1, made a significant difference. Conclusion : When temperatures rises during growth period, the growth of ginseng was decreased but, ginsenoside contents were increased.

Background : This study was carried out to distribute superior cultivars to farmers by analyzing growth characteristics of ginseng and effectively set the target for breeding by investigating annual agronomic characteristics of ginseng. Methods and Results : As a plant materials, Chunpoong (CP), Yunpoong (YP), Gopoong(GP), Gumpoong (GU) and Sunun (SU) were transplanted in Eumseong (ES), Geumsan (GS) and Yeoncheon (YC) on March 2013. Cultivation and management were conducted on the basis of the standard guidelines. According to stem and petiole by region, YC represent the largest stem diameter, leaf length and petiole length of cultivars, followed by those in ES and those in GS. Leaf growth of cultivars was overall the best in YC. Although CP had long and narrow leaves in all regions, YP and SU had short and narrow leaves. Root weight of all cultivars was the best in YC, but there was no significant differences by them. Growth of CP, YP and GP was generally good in ES. Growth of cultivars was relatively even in GS, but it was poor compared to cultivars which were cultivated in ES and YC. Conclusion : There were considerable differences in root growth of cultivars. However, this results suggest that CP of 4-year-old is produced stably in some regions because it had a small coefficient of variation.

Background : This study was conducted to determine the impact of temperature elevated and the effect of transplanting times based on climate change scenario on growth of 2-year-old korean ginseng (Panax ginseng C. A. Meyer.) in temperature gradient chambers (TGC). Methods and Results : As a plant materials, ‘Yunpoong’ was cultivated in TGC at ambient temperature(Amb), Amb+2℃, Amb+4℃ and Amb+6℃ respectively. Ginseng was also transplanted on March 29, April 12 and 26 respectively. Investigation on characteristic of aerial parts were carried out on 28, 56, 84 and 112 days after transplanting and characteristic of roots were conducted on October 19. As transplanting time was faster and temperature was higher, the growth of aerial parts were increased. Compared with those of ginseng transplanted on March 29 with Amb, the root weight which tend to decrease depending on late transplanting time and high temperature decreased about 11.1%, 35.4% and 42.4% in Amb+ 2℃, Amb+4℃ and Amb+6℃ respectively. Ginseng transplanted on April 12 and 26 decreased about 20.9%, 33.9% respectively. Conclusion : Consequently, the more transplanting time extend, the more quantity increased in all temperature treatment. So, it is possible to increase in quantity to advance transplanting time although high temperature will be caused by the climate change.

Sorghum is the fifth most important cereal in the world as one of the staple food. For the use of natural dye, we have done some researches about sorghum red pigments extracted from stalk and leaves on its physiochemical properties, extracting methods and applications. The researches involved maximum extraction of sorghum pigment and analysis of its processing condition. Total polyphenol and tannin contents were measured by varieties and different plant parts. The stabilities of pigment by irradiation and heat treatment for processing were measured by colorimeter and thermal gravimetric analysis (TGA). In addition, hybrid nano-silica composites with sorghum pigment were made by combining with polyvinyl alcohol, polyvinyl acetate and sodium silicate. Water silica hybrids with sorghum pigment were performed by emulsion treatment. Nano-silica particles were identified and measured their size to be about 200 ~ 400 nm by SEM analysis.

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.

One objective of soybean breeders is to develop cultivars with elevated oleic acid content. Testing soybean seeds for oleic acid content is possible using gas chromatography (GC), however it is time-consuming and requires destructing the seeds. Using single seeds, we developed a near-infrared reflectance spectroscopy (NIR) calibration equation relating oleic acid measured with GC to oleic acid predicted by NIR. The slope of the regression line of oleic acid measured with GC on oleic acid predicted by NIR and the intercept was not different from zero. A set of 300 soybean seeds was used to calculate the NIR equation and an independent set of 100 soybean seeds was used for validation. This NIRS equation showed significant correlation between reference values and NIRS estimated values based on the SEP, r2, and the RSP of reference data to SEP. This research shows that NIR prediction of oleic acid using intact soybean seeds is accurate and rapid and should be especially useful for early generation screening.

"Jecy Green" is a new kiwifruit variety developed at the National Institute of Subtropical Agriculture (NISA), RDA in 2003, which was for the utilization as fruit with smooth skin and green flesh. This variety was selected from seeds obtained from the cross breeding between Actinidia chinensis cv. "Apple Sensation" and A. deliciosa cv. "Tomuri" in 1997. Seedling and line selections were conducted from 1998 to 1999, and characteristic trials were carried out from 2000 to 2002. After developed, it was also conducted to the test of adaptability in kiwifruit orchards of Jeju island from 2003 to 2006. The branch of "Jecy Green" sprouts strongly and the color of leaf is slightly dark green. The shape of fruit is ellipsoid, and the color of peel is light yellowish-brown with pubescence. The average weight of fruit is 82.9 g and the largest 125g. The core is middle and soft, the percicarp is yellowish green, and the texture is fragile and juicy. Soluble solids concentration is 13.2 °Brix. The total acid content is 1.07% and the fruit yield is higher about 10% than that of A. deliciosa cv. "Hayward". The harvesting time is early November and the fruit can be preserved about 70~90 days at 2℃. This variety can be planted bellow 100 m sea level and should be grown under shelter to prevent from disease and cold.

“Jecy Gold” is a new kiwifruit variety developed at the National Institute of Subtropical Agriculture (NISA), RDA in 2003, which was for the utilization as fruit with yellow flesh and high soluble solids. This variety was selected from seeds obtained from the cross breeding between Actinidia chinensis cv. “Golden Yellow” and A. chinensis cv. “Songongu” with yellow flesh in 1997. Seedling and line selections were conducted from 1998 to 1999, and characteristic trials were carried out from 2000 to 2002. After developed, it was also conducted to the test of adaptability in kiwifruit orchards of Jeju island from 2003 to 2006. The branch of “Jecy Gold” sprouts strongly and the color of leaf is slightly dark green. The shape of fruit is obovoid, and the color of peel is yellowish-brown without hair. The average weight of fruit is 128.4 g. The core is middle and soft, the percicarp is golden yellow, and the texture is fragile and juicy. Soluble solids concentration is 14.8 oBrix. The total acid content is 0.69% and the fruit yield is higher about 30% than that of A. deliciosa cv. “Hayward”. The content of vitamin C is higher than that of A. deliciosa cv. “Hayward”. The harvesting time is from late October to early November and the fruit can be preserved about 90 days at 2°C. This variety can be planted bellow 100 m sea level and should be grown under shelter to prevent from disease and cold. This variety will be cultivated about 100 ha by 2011 in the southern part of Korea and has been supplied about 10 ha in 2007.